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Merge pull request #1949 from rust-lang/third-party-exercises

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Support for third-party exercises
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Mo 2024-04-18 13:02:35 +02:00 committed by GitHub
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121 changed files with 1070 additions and 983 deletions
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58
Cargo.lock generated
View file

@ -179,7 +179,7 @@ dependencies = [
"heck 0.5.0",
"proc-macro2",
"quote",
"syn 2.0.58",
"syn",
]
[[package]]
@ -311,15 +311,6 @@ dependencies = [
"libc",
]
[[package]]
name = "gen-dev-cargo-toml"
version = "0.0.0"
dependencies = [
"anyhow",
"serde",
"toml_edit",
]
[[package]]
name = "hashbrown"
version = "0.14.3"
@ -589,9 +580,9 @@ dependencies = [
[[package]]
name = "proc-macro2"
version = "1.0.79"
version = "1.0.81"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
dependencies = [
"unicode-ident",
]
@ -607,9 +598,9 @@ dependencies = [
[[package]]
name = "ratatui"
version = "0.26.1"
version = "0.26.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bcb12f8fbf6c62614b0d56eb352af54f6a22410c3b079eb53ee93c7b97dd31d8"
checksum = "a564a852040e82671dc50a37d88f3aa83bbc690dfc6844cfe7a2591620206a80"
dependencies = [
"bitflags 2.5.0",
"cassowary",
@ -678,7 +669,7 @@ dependencies = [
[[package]]
name = "rustlings"
version = "6.0.0"
version = "6.0.0-alpha.0"
dependencies = [
"anyhow",
"assert_cmd",
@ -696,7 +687,7 @@ dependencies = [
[[package]]
name = "rustlings-macros"
version = "6.0.0"
version = "6.0.0-alpha.0"
dependencies = [
"quote",
]
@ -730,22 +721,22 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
[[package]]
name = "serde"
version = "1.0.197"
version = "1.0.198"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3fb1c873e1b9b056a4dc4c0c198b24c3ffa059243875552b2bd0933b1aee4ce2"
checksum = "9846a40c979031340571da2545a4e5b7c4163bdae79b301d5f86d03979451fcc"
dependencies = [
"serde_derive",
]
[[package]]
name = "serde_derive"
version = "1.0.197"
version = "1.0.198"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
checksum = "e88edab869b01783ba905e7d0153f9fc1a6505a96e4ad3018011eedb838566d9"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.58",
"syn",
]
[[package]]
@ -795,12 +786,12 @@ checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
[[package]]
name = "stability"
version = "0.1.1"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ebd1b177894da2a2d9120208c3386066af06a488255caabc5de8ddca22dbc3ce"
checksum = "2ff9eaf853dec4c8802325d8b6d3dffa86cc707fd7a1a4cdbf416e13b061787a"
dependencies = [
"quote",
"syn 1.0.109",
"syn",
]
[[package]]
@ -834,25 +825,14 @@ dependencies = [
"proc-macro2",
"quote",
"rustversion",
"syn 2.0.58",
"syn",
]
[[package]]
name = "syn"
version = "1.0.109"
version = "2.0.59"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "syn"
version = "2.0.58"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
checksum = "4a6531ffc7b071655e4ce2e04bd464c4830bb585a61cabb96cf808f05172615a"
dependencies = [
"proc-macro2",
"quote",
@ -1156,5 +1136,5 @@ checksum = "9ce1b18ccd8e73a9321186f97e46f9f04b778851177567b1975109d26a08d2a6"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.58",
"syn",
]

28
Cargo.toml
View file

@ -6,24 +6,17 @@ exclude = [
"tests/fixture/success",
"dev",
]
members = [
"gen-dev-cargo-toml",
]
[workspace.package]
version = "6.0.0"
version = "6.0.0-alpha.0"
authors = [
"Liv <mokou@fastmail.com>",
"Carol (Nichols || Goulding) <carol.nichols@gmail.com>",
"Mo <mo8it@proton.me>",
]
license = "MIT"
edition = "2021"
[workspace.dependencies]
anyhow = "1.0.82"
serde = { version = "1.0.197", features = ["derive"] }
toml_edit = { version = "0.22.9", default-features = false, features = ["parse", "serde"] }
[package]
name = "rustlings"
description = "Small exercises to get you used to reading and writing Rust code!"
@ -32,17 +25,24 @@ version.workspace = true
authors.workspace = true
license.workspace = true
edition.workspace = true
include = [
"/exercises/",
"/info.toml",
"/LICENSE",
"/README.md",
"/src/",
]
[dependencies]
anyhow.workspace = true
anyhow = "1.0.82"
clap = { version = "4.5.4", features = ["derive"] }
crossterm = "0.27.0"
hashbrown = "0.14.3"
notify-debouncer-mini = "0.4.1"
ratatui = "0.26.1"
rustlings-macros = { path = "rustlings-macros" }
serde.workspace = true
toml_edit.workspace = true
ratatui = "0.26.2"
rustlings-macros = { path = "rustlings-macros", version = "6.0.0-alpha.0" }
serde = { version = "1.0.198", features = ["derive"] }
toml_edit = { version = "0.22.9", default-features = false, features = ["parse", "serde"] }
which = "6.0.1"
[dev-dependencies]

4
dev/Cargo.toml
View file

@ -1,6 +1,4 @@
# This file is a hack to allow using `cargo run` to test `rustlings` during development.
# You shouldn't edit it manually. It is created and updated by running `cargo run -p gen-dev-cargo-toml`.
# Don't edit the `bin` list manually! It is updated by `cargo run -- dev update`
bin = [
{ name = "intro1", path = "../exercises/00_intro/intro1.rs" },
{ name = "intro2", path = "../exercises/00_intro/intro2.rs" },

5
exercises/00_intro/intro1.rs
View file

@ -1,5 +1,3 @@
// intro1.rs
//
// We sometimes encourage you to keep trying things on a given exercise, even
// after you already figured it out. If you got everything working and feel
// ready for the next exercise, remove the `I AM NOT DONE` comment below.
@ -8,9 +6,6 @@
// reloaded when you change one of the lines below! Try adding a `println!`
// line, or try changing what it outputs in your terminal. Try removing a
// semicolon and see what happens!
//
// Execute `rustlings hint intro1` or use the `hint` watch subcommand for a
// hint.
fn main() {
println!("Hello and");

5
exercises/00_intro/intro2.rs
View file

@ -1,9 +1,4 @@
// intro2.rs
//
// Make the code print a greeting to the world.
//
// Execute `rustlings hint intro2` or use the `hint` watch subcommand for a
// hint.
fn main() {
printline!("Hello there!")

5
exercises/01_variables/variables1.rs
View file

@ -1,9 +1,4 @@
// variables1.rs
//
// Make me compile!
//
// Execute `rustlings hint variables1` or use the `hint` watch subcommand for a
// hint.
fn main() {
x = 5;

5
exercises/01_variables/variables2.rs
View file

@ -1,8 +1,3 @@
// variables2.rs
//
// Execute `rustlings hint variables2` or use the `hint` watch subcommand for a
// hint.
fn main() {
let x;
if x == 10 {

5
exercises/01_variables/variables3.rs
View file

@ -1,8 +1,3 @@
// variables3.rs
//
// Execute `rustlings hint variables3` or use the `hint` watch subcommand for a
// hint.
fn main() {
let x: i32;
println!("Number {}", x);

5
exercises/01_variables/variables4.rs
View file

@ -1,8 +1,3 @@
// variables4.rs
//
// Execute `rustlings hint variables4` or use the `hint` watch subcommand for a
// hint.
fn main() {
let x = 3;
println!("Number {}", x);

5
exercises/01_variables/variables5.rs
View file

@ -1,8 +1,3 @@
// variables5.rs
//
// Execute `rustlings hint variables5` or use the `hint` watch subcommand for a
// hint.
fn main() {
let number = "T-H-R-E-E"; // don't change this line
println!("Spell a Number : {}", number);

5
exercises/01_variables/variables6.rs
View file

@ -1,8 +1,3 @@
// variables6.rs
//
// Execute `rustlings hint variables6` or use the `hint` watch subcommand for a
// hint.
const NUMBER = 3;
fn main() {
println!("Number {}", NUMBER);

5
exercises/02_functions/functions1.rs
View file

@ -1,8 +1,3 @@
// functions1.rs
//
// Execute `rustlings hint functions1` or use the `hint` watch subcommand for a
// hint.
fn main() {
call_me();
}

5
exercises/02_functions/functions2.rs
View file

@ -1,8 +1,3 @@
// functions2.rs
//
// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a
// hint.
fn main() {
call_me(3);
}

5
exercises/02_functions/functions3.rs
View file

@ -1,8 +1,3 @@
// functions3.rs
//
// Execute `rustlings hint functions3` or use the `hint` watch subcommand for a
// hint.
fn main() {
call_me();
}

5
exercises/02_functions/functions4.rs
View file

@ -1,12 +1,7 @@
// functions4.rs
//
// This store is having a sale where if the price is an even number, you get 10
// Rustbucks off, but if it's an odd number, it's 3 Rustbucks off. (Don't worry
// about the function bodies themselves, we're only interested in the signatures
// for now. If anything, this is a good way to peek ahead to future exercises!)
//
// Execute `rustlings hint functions4` or use the `hint` watch subcommand for a
// hint.
fn main() {
let original_price = 51;

5
exercises/02_functions/functions5.rs
View file

@ -1,8 +1,3 @@
// functions5.rs
//
// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a
// hint.
fn main() {
let answer = square(3);
println!("The square of 3 is {}", answer);

8
exercises/03_if/if1.rs
View file

@ -1,7 +1,3 @@
// if1.rs
//
// Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
pub fn bigger(a: i32, b: i32) -> i32 {
// Complete this function to return the bigger number!
// If both numbers are equal, any of them can be returned.
@ -10,6 +6,10 @@ pub fn bigger(a: i32, b: i32) -> i32 {
// - additional variables
}
fn main() {
// You can optionally experiment here.
}
// Don't mind this for now :)
#[cfg(test)]
mod tests {

8
exercises/03_if/if2.rs
View file

@ -1,9 +1,5 @@
// if2.rs
//
// Step 1: Make me compile!
// Step 2: Get the bar_for_fuzz and default_to_baz tests passing!
//
// Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
pub fn foo_if_fizz(fizzish: &str) -> &str {
if fizzish == "fizz" {
@ -13,6 +9,10 @@ pub fn foo_if_fizz(fizzish: &str) -> &str {
}
}
fn main() {
// You can optionally experiment here.
}
// No test changes needed!
#[cfg(test)]
mod tests {

8
exercises/03_if/if3.rs
View file

@ -1,7 +1,3 @@
// if3.rs
//
// Execute `rustlings hint if3` or use the `hint` watch subcommand for a hint.
pub fn animal_habitat(animal: &str) -> &'static str {
let identifier = if animal == "crab" {
1
@ -27,6 +23,10 @@ pub fn animal_habitat(animal: &str) -> &'static str {
habitat
}
fn main() {
// You can optionally experiment here.
}
// No test changes needed.
#[cfg(test)]
mod tests {

5
exercises/04_primitive_types/primitive_types1.rs
View file

@ -1,7 +1,4 @@
// primitive_types1.rs
//
// Fill in the rest of the line that has code missing! No hints, there's no
// tricks, just get used to typing these :)
// Fill in the rest of the line that has code missing!
fn main() {
// Booleans (`bool`)

5
exercises/04_primitive_types/primitive_types2.rs
View file

@ -1,8 +1,3 @@
// primitive_types2.rs
//
// Fill in the rest of the line that has code missing! No hints, there's no
// tricks, just get used to typing these :)
fn main() {
// Characters (`char`)

5
exercises/04_primitive_types/primitive_types3.rs
View file

@ -1,9 +1,4 @@
// primitive_types3.rs
//
// Create an array with at least 100 elements in it where the ??? is.
//
// Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand
// for a hint.
fn main() {
let a = ???

18
exercises/04_primitive_types/primitive_types4.rs
View file

@ -1,15 +1,19 @@
// primitive_types4.rs
//
// Get a slice out of Array a where the ??? is so that the test passes.
//
// Execute `rustlings hint primitive_types4` or use the `hint` watch subcommand
// for a hint.
#[test]
fn slice_out_of_array() {
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn slice_out_of_array() {
let a = [1, 2, 3, 4, 5];
let nice_slice = ???
assert_eq!([2, 3, 4], nice_slice)
}
}

5
exercises/04_primitive_types/primitive_types5.rs
View file

@ -1,9 +1,4 @@
// primitive_types5.rs
//
// Destructure the `cat` tuple so that the println will work.
//
// Execute `rustlings hint primitive_types5` or use the `hint` watch subcommand
// for a hint.
fn main() {
let cat = ("Furry McFurson", 3.5);

18
exercises/04_primitive_types/primitive_types6.rs
View file

@ -1,17 +1,21 @@
// primitive_types6.rs
//
// Use a tuple index to access the second element of `numbers`. You can put the
// expression for the second element where ??? is so that the test passes.
//
// Execute `rustlings hint primitive_types6` or use the `hint` watch subcommand
// for a hint.
#[test]
fn indexing_tuple() {
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn indexing_tuple() {
let numbers = (1, 2, 3);
// Replace below ??? with the tuple indexing syntax.
let second = ???;
assert_eq!(2, second,
"This is not the 2nd number in the tuple!")
}
}

8
exercises/05_vecs/vecs1.rs
View file

@ -1,11 +1,7 @@
// vecs1.rs
//
// Your task is to create a `Vec` which holds the exact same elements as in the
// array `a`.
//
// Make me compile and pass the test!
//
// Execute `rustlings hint vecs1` or use the `hint` watch subcommand for a hint.
fn array_and_vec() -> ([i32; 4], Vec<i32>) {
let a = [10, 20, 30, 40]; // a plain array
@ -14,6 +10,10 @@ fn array_and_vec() -> ([i32; 4], Vec<i32>) {
(a, v)
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

8
exercises/05_vecs/vecs2.rs
View file

@ -1,11 +1,7 @@
// vecs2.rs
//
// A Vec of even numbers is given. Your task is to complete the loop so that
// each number in the Vec is multiplied by 2.
//
// Make me pass the test!
//
// Execute `rustlings hint vecs2` or use the `hint` watch subcommand for a hint.
fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
for element in v.iter_mut() {
@ -26,6 +22,10 @@ fn vec_map(v: &Vec<i32>) -> Vec<i32> {
}).collect()
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

32
exercises/06_move_semantics/move_semantics1.rs
View file

@ -1,17 +1,3 @@
// move_semantics1.rs
//
// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand
// for a hint.
#[test]
fn main() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
let vec = vec;
@ -19,3 +5,21 @@ fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
vec
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn move_semantics1() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
}

34
exercises/06_move_semantics/move_semantics2.rs
View file

@ -1,19 +1,4 @@
// move_semantics2.rs
//
// Make the test pass by finding a way to keep both Vecs separate!
//
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
// for a hint.
#[test]
fn main() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec0, vec![22, 44, 66]);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
let mut vec = vec;
@ -22,3 +7,22 @@ fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
vec
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn move_semantics2() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec0, vec![22, 44, 66]);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
}

32
exercises/06_move_semantics/move_semantics3.rs
View file

@ -1,22 +1,26 @@
// move_semantics3.rs
//
// Make me compile without adding new lines -- just changing existing lines! (no
// lines with multiple semicolons necessary!)
//
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
// for a hint.
#[test]
fn main() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
vec.push(88);
vec
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn move_semantics3() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
}

34
exercises/06_move_semantics/move_semantics4.rs
View file

@ -1,20 +1,6 @@
// move_semantics4.rs
//
// Refactor this code so that instead of passing `vec0` into the `fill_vec`
// function, the Vector gets created in the function itself and passed back to
// the main function.
//
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
// for a hint.
#[test]
fn main() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
// the test function.
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
fn fill_vec() -> Vec<i32> {
@ -25,3 +11,21 @@ fn fill_vec() -> Vec<i32> {
vec
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn move_semantics4() {
let vec0 = vec![22, 44, 66];
let vec1 = fill_vec(vec0);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
}

18
exercises/06_move_semantics/move_semantics5.rs
View file

@ -1,17 +1,21 @@
// move_semantics5.rs
//
// Make me compile only by reordering the lines in `main()`, but without adding,
// Make me compile only by reordering the lines in the test, but without adding,
// changing or removing any of them.
//
// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand
// for a hint.
#[test]
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn move_semantics5() {
let mut x = 100;
let y = &mut x;
let z = &mut x;
*y += 100;
*z += 1000;
assert_eq!(x, 1200);
}
}

5
exercises/06_move_semantics/move_semantics6.rs
View file

@ -1,9 +1,4 @@
// move_semantics6.rs
//
// You can't change anything except adding or removing references.
//
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
// for a hint.
fn main() {
let data = "Rust is great!".to_string();

9
exercises/07_structs/structs1.rs
View file

@ -1,9 +1,4 @@
// structs1.rs
//
// Address all the TODOs to make the tests pass!
//
// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a
// hint.
struct ColorClassicStruct {
// TODO: Something goes here
@ -14,6 +9,10 @@ struct ColorTupleStruct(/* TODO: Something goes here */);
#[derive(Debug)]
struct UnitLikeStruct;
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/07_structs/structs2.rs
View file

@ -1,9 +1,4 @@
// structs2.rs
//
// Address all the TODOs to make the tests pass!
//
// Execute `rustlings hint structs2` or use the `hint` watch subcommand for a
// hint.
#[derive(Debug)]
struct Order {
@ -28,6 +23,10 @@ fn create_order_template() -> Order {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/07_structs/structs3.rs
View file

@ -1,11 +1,6 @@
// structs3.rs
//
// Structs contain data, but can also have logic. In this exercise we have
// defined the Package struct and we want to test some logic attached to it.
// Make the code compile and the tests pass!
//
// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a
// hint.
#[derive(Debug)]
struct Package {
@ -38,6 +33,10 @@ impl Package {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

4
exercises/08_enums/enums1.rs
View file

@ -1,7 +1,3 @@
// enums1.rs
//
// No hints this time! ;)
#[derive(Debug)]
enum Message {
// TODO: define a few types of messages as used below

5
exercises/08_enums/enums2.rs
View file

@ -1,8 +1,3 @@
// enums2.rs
//
// Execute `rustlings hint enums2` or use the `hint` watch subcommand for a
// hint.
#[derive(Debug)]
enum Message {
// TODO: define the different variants used below

9
exercises/08_enums/enums3.rs
View file

@ -1,9 +1,4 @@
// enums3.rs
//
// Address all the TODOs to make the tests pass!
//
// Execute `rustlings hint enums3` or use the `hint` watch subcommand for a
// hint.
enum Message {
// TODO: implement the message variant types based on their usage below
@ -45,6 +40,10 @@ impl State {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

5
exercises/09_strings/strings1.rs
View file

@ -1,9 +1,4 @@
// strings1.rs
//
// Make me compile without changing the function signature!
//
// Execute `rustlings hint strings1` or use the `hint` watch subcommand for a
// hint.
fn main() {
let answer = current_favorite_color();

5
exercises/09_strings/strings2.rs
View file

@ -1,9 +1,4 @@
// strings2.rs
//
// Make me compile without changing the function signature!
//
// Execute `rustlings hint strings2` or use the `hint` watch subcommand for a
// hint.
fn main() {
let word = String::from("green"); // Try not changing this line :)

9
exercises/09_strings/strings3.rs
View file

@ -1,8 +1,3 @@
// strings3.rs
//
// Execute `rustlings hint strings3` or use the `hint` watch subcommand for a
// hint.
fn trim_me(input: &str) -> String {
// TODO: Remove whitespace from both ends of a string!
???
@ -18,6 +13,10 @@ fn replace_me(input: &str) -> String {
???
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

6
exercises/09_strings/strings4.rs
View file

@ -1,11 +1,7 @@
// strings4.rs
//
// Ok, here are a bunch of values-- some are `String`s, some are `&str`s. Your
// Ok, here are a bunch of values - some are `String`s, some are `&str`s. Your
// task is to call one of these two functions on each value depending on what
// you think each value is. That is, add either `string_slice` or `string`
// before the parentheses on each line. If you're right, it will compile!
//
// No hints this time!
fn string_slice(arg: &str) {
println!("{}", arg);

5
exercises/10_modules/modules1.rs
View file

@ -1,8 +1,3 @@
// modules1.rs
//
// Execute `rustlings hint modules1` or use the `hint` watch subcommand for a
// hint.
mod sausage_factory {
// Don't let anybody outside of this module see this!
fn get_secret_recipe() -> String {

5
exercises/10_modules/modules2.rs
View file

@ -1,11 +1,6 @@
// modules2.rs
//
// You can bring module paths into scopes and provide new names for them with
// the 'use' and 'as' keywords. Fix these 'use' statements to make the code
// compile.
//
// Execute `rustlings hint modules2` or use the `hint` watch subcommand for a
// hint.
mod delicious_snacks {
// TODO: Fix these use statements

5
exercises/10_modules/modules3.rs
View file

@ -1,12 +1,7 @@
// modules3.rs
//
// You can use the 'use' keyword to bring module paths from modules from
// anywhere and especially from the Rust standard library into your scope. Bring
// SystemTime and UNIX_EPOCH from the std::time module. Bonus style points if
// you can do it with one line!
//
// Execute `rustlings hint modules3` or use the `hint` watch subcommand for a
// hint.
// TODO: Complete this use statement
use ???

9
exercises/11_hashmaps/hashmaps1.rs
View file

@ -1,5 +1,3 @@
// hashmaps1.rs
//
// A basket of fruits in the form of a hash map needs to be defined. The key
// represents the name of the fruit and the value represents how many of that
// particular fruit is in the basket. You have to put at least three different
@ -7,9 +5,6 @@
// of all the fruits should be at least five.
//
// Make me compile and pass the tests!
//
// Execute `rustlings hint hashmaps1` or use the `hint` watch subcommand for a
// hint.
use std::collections::HashMap;
@ -24,6 +19,10 @@ fn fruit_basket() -> HashMap<String, u32> {
basket
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/11_hashmaps/hashmaps2.rs
View file

@ -1,5 +1,3 @@
// hashmaps2.rs
//
// We're collecting different fruits to bake a delicious fruit cake. For this,
// we have a basket, which we'll represent in the form of a hash map. The key
// represents the name of each fruit we collect and the value represents how
@ -10,9 +8,6 @@
// to insert any more of these fruits!
//
// Make me pass the tests!
//
// Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a
// hint.
use std::collections::HashMap;
@ -41,6 +36,10 @@ fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/11_hashmaps/hashmaps3.rs
View file

@ -1,5 +1,3 @@
// hashmaps3.rs
//
// A list of scores (one per line) of a soccer match is given. Each line is of
// the form : "<team_1_name>,<team_2_name>,<team_1_goals>,<team_2_goals>"
// Example: England,France,4,2 (England scored 4 goals, France 2).
@ -11,9 +9,6 @@
// complete it to pass the test.
//
// Make me pass the tests!
//
// Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a
// hint.
use std::collections::HashMap;
@ -42,6 +37,10 @@ fn build_scores_table(results: String) -> HashMap<String, Team> {
scores
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/12_options/options1.rs
View file

@ -1,8 +1,3 @@
// options1.rs
//
// Execute `rustlings hint options1` or use the `hint` watch subcommand for a
// hint.
// This function returns how much icecream there is left in the fridge.
// If it's before 10PM, there's 5 scoops left. At 10PM, someone eats it
// all, so there'll be no more left :(
@ -14,6 +9,10 @@ fn maybe_icecream(time_of_day: u16) -> Option<u16> {
???
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

7
exercises/12_options/options2.rs
View file

@ -1,7 +1,6 @@
// options2.rs
//
// Execute `rustlings hint options2` or use the `hint` watch subcommand for a
// hint.
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {

5
exercises/12_options/options3.rs
View file

@ -1,8 +1,3 @@
// options3.rs
//
// Execute `rustlings hint options3` or use the `hint` watch subcommand for a
// hint.
struct Point {
x: i32,
y: i32,

9
exercises/13_error_handling/errors1.rs
View file

@ -1,13 +1,12 @@
// errors1.rs
//
// This function refuses to generate text to be printed on a nametag if you pass
// it an empty string. It'd be nicer if it explained what the problem was,
// instead of just sometimes returning `None`. Thankfully, Rust has a similar
// construct to `Option` that can be used to express error conditions. Let's use
// it!
//
// Execute `rustlings hint errors1` or use the `hint` watch subcommand for a
// hint.
fn main() {
// You can optionally experiment here.
}
pub fn generate_nametag_text(name: String) -> Option<String> {
if name.is_empty() {

9
exercises/13_error_handling/errors2.rs
View file

@ -1,5 +1,3 @@
// errors2.rs
//
// Say we're writing a game where you can buy items with tokens. All items cost
// 5 tokens, and whenever you purchase items there is a processing fee of 1
// token. A player of the game will type in how many items they want to buy, and
@ -15,9 +13,6 @@
//
// There are at least two ways to implement this that are both correct-- but one
// is a lot shorter!
//
// Execute `rustlings hint errors2` or use the `hint` watch subcommand for a
// hint.
use std::num::ParseIntError;
@ -29,6 +24,10 @@ pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
Ok(qty * cost_per_item + processing_fee)
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

5
exercises/13_error_handling/errors3.rs
View file

@ -1,11 +1,6 @@
// errors3.rs
//
// This is a program that is trying to use a completed version of the
// `total_cost` function from the previous exercise. It's not working though!
// Why not? What should we do to fix it?
//
// Execute `rustlings hint errors3` or use the `hint` watch subcommand for a
// hint.
use std::num::ParseIntError;

18
exercises/13_error_handling/errors4.rs
View file

@ -1,8 +1,3 @@
// errors4.rs
//
// Execute `rustlings hint errors4` or use the `hint` watch subcommand for a
// hint.
#[derive(PartialEq, Debug)]
struct PositiveNonzeroInteger(u64);
@ -19,12 +14,21 @@ impl PositiveNonzeroInteger {
}
}
#[test]
fn test_creation() {
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_creation() {
assert!(PositiveNonzeroInteger::new(10).is_ok());
assert_eq!(
Err(CreationError::Negative),
PositiveNonzeroInteger::new(-10)
);
assert_eq!(Err(CreationError::Zero), PositiveNonzeroInteger::new(0));
}
}

5
exercises/13_error_handling/errors5.rs
View file

@ -1,5 +1,3 @@
// errors5.rs
//
// This program uses an altered version of the code from errors4.
//
// This exercise uses some concepts that we won't get to until later in the
@ -18,9 +16,6 @@
//
// What can we use to describe both errors? In other words, is there a trait
// which both errors implement?
//
// Execute `rustlings hint errors5` or use the `hint` watch subcommand for a
// hint.
use std::error;
use std::fmt;

9
exercises/13_error_handling/errors6.rs
View file

@ -1,13 +1,8 @@
// errors6.rs
//
// Using catch-all error types like `Box<dyn error::Error>` isn't recommended
// for library code, where callers might want to make decisions based on the
// error content, instead of printing it out or propagating it further. Here, we
// define a custom error type to make it possible for callers to decide what to
// do next when our function returns an error.
//
// Execute `rustlings hint errors6` or use the `hint` watch subcommand for a
// hint.
use std::num::ParseIntError;
@ -54,6 +49,10 @@ impl PositiveNonzeroInteger {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod test {
use super::*;

5
exercises/14_generics/generics1.rs
View file

@ -1,10 +1,5 @@
// generics1.rs
//
// This shopping list program isn't compiling! Use your knowledge of generics to
// fix it.
//
// Execute `rustlings hint generics1` or use the `hint` watch subcommand for a
// hint.
fn main() {
let mut shopping_list: Vec<?> = Vec::new();

9
exercises/14_generics/generics2.rs
View file

@ -1,10 +1,5 @@
// generics2.rs
//
// This powerful wrapper provides the ability to store a positive integer value.
// Rewrite it using generics so that it supports wrapping ANY type.
//
// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a
// hint.
struct Wrapper {
value: u32,
@ -16,6 +11,10 @@ impl Wrapper {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

5
exercises/15_traits/traits1.rs
View file

@ -1,11 +1,6 @@
// traits1.rs
//
// Time to implement some traits! Your task is to implement the trait
// `AppendBar` for the type `String`. The trait AppendBar has only one function,
// which appends "Bar" to any object implementing this trait.
//
// Execute `rustlings hint traits1` or use the `hint` watch subcommand for a
// hint.
trait AppendBar {
fn append_bar(self) -> Self;

8
exercises/15_traits/traits2.rs
View file

@ -1,12 +1,8 @@
// traits2.rs
//
// Your task is to implement the trait `AppendBar` for a vector of strings. To
// implement this trait, consider for a moment what it means to 'append "Bar"'
// to a vector of strings.
//
// No boiler plate code this time, you can do this!
//
// Execute `rustlings hint traits2` or use the `hint` watch subcommand for a hint.
trait AppendBar {
fn append_bar(self) -> Self;
@ -14,6 +10,10 @@ trait AppendBar {
// TODO: Implement trait `AppendBar` for a vector of strings.
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/15_traits/traits3.rs
View file

@ -1,12 +1,7 @@
// traits3.rs
//
// Your task is to implement the Licensed trait for both structures and have
// them return the same information without writing the same function twice.
//
// Consider what you can add to the Licensed trait.
//
// Execute `rustlings hint traits3` or use the `hint` watch subcommand for a
// hint.
pub trait Licensed {
fn licensing_info(&self) -> String;
@ -23,6 +18,10 @@ struct OtherSoftware {
impl Licensed for SomeSoftware {} // Don't edit this line
impl Licensed for OtherSoftware {} // Don't edit this line
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/15_traits/traits4.rs
View file

@ -1,11 +1,6 @@
// traits4.rs
//
// Your task is to replace the '??' sections so the code compiles.
//
// Don't change any line other than the marked one.
//
// Execute `rustlings hint traits4` or use the `hint` watch subcommand for a
// hint.
pub trait Licensed {
fn licensing_info(&self) -> String {
@ -25,6 +20,10 @@ fn compare_license_types(software: ??, software_two: ??) -> bool {
software.licensing_info() == software_two.licensing_info()
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

5
exercises/15_traits/traits5.rs
View file

@ -1,11 +1,6 @@
// traits5.rs
//
// Your task is to replace the '??' sections so the code compiles.
//
// Don't change any line other than the marked one.
//
// Execute `rustlings hint traits5` or use the `hint` watch subcommand for a
// hint.
pub trait SomeTrait {
fn some_function(&self) -> bool {

5
exercises/16_lifetimes/lifetimes1.rs
View file

@ -1,12 +1,7 @@
// lifetimes1.rs
//
// The Rust compiler needs to know how to check whether supplied references are
// valid, so that it can let the programmer know if a reference is at risk of
// going out of scope before it is used. Remember, references are borrows and do
// not own their own data. What if their owner goes out of scope?
//
// Execute `rustlings hint lifetimes1` or use the `hint` watch subcommand for a
// hint.
fn longest(x: &str, y: &str) -> &str {
if x.len() > y.len() {

5
exercises/16_lifetimes/lifetimes2.rs
View file

@ -1,10 +1,5 @@
// lifetimes2.rs
//
// So if the compiler is just validating the references passed to the annotated
// parameters and the return type, what do we need to change?
//
// Execute `rustlings hint lifetimes2` or use the `hint` watch subcommand for a
// hint.
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
if x.len() > y.len() {

10
exercises/16_lifetimes/lifetimes3.rs
View file

@ -1,9 +1,4 @@
// lifetimes3.rs
//
// Lifetimes are also needed when structs hold references.
//
// Execute `rustlings hint lifetimes3` or use the `hint` watch subcommand for a
// hint.
struct Book {
author: &str,
@ -13,7 +8,10 @@ struct Book {
fn main() {
let name = String::from("Jill Smith");
let title = String::from("Fish Flying");
let book = Book { author: &name, title: &title };
let book = Book {
author: &name,
title: &title,
};
println!("{} by {}", book.title, book.author);
}

9
exercises/17_tests/tests1.rs
View file

@ -1,14 +1,13 @@
// tests1.rs
//
// Tests are important to ensure that your code does what you think it should
// do. Tests can be run on this file with the following command: rustlings run
// tests1
//
// This test has a problem with it -- make the test compile! Make the test pass!
// Make the test fail!
//
// Execute `rustlings hint tests1` or use the `hint` watch subcommand for a
// hint.
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {

9
exercises/17_tests/tests2.rs
View file

@ -1,10 +1,9 @@
// tests2.rs
//
// This test has a problem with it -- make the test compile! Make the test pass!
// Make the test fail!
//
// Execute `rustlings hint tests2` or use the `hint` watch subcommand for a
// hint.
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {

9
exercises/17_tests/tests3.rs
View file

@ -1,16 +1,15 @@
// tests3.rs
//
// This test isn't testing our function -- make it do that in such a way that
// the test passes. Then write a second test that tests whether we get the
// result we expect to get when we call `is_even(5)`.
//
// Execute `rustlings hint tests3` or use the `hint` watch subcommand for a
// hint.
pub fn is_even(num: i32) -> bool {
num % 2 == 0
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

13
exercises/17_tests/tests4.rs
View file

@ -1,13 +1,8 @@
// tests4.rs
//
// Make sure that we're testing for the correct conditions!
//
// Execute `rustlings hint tests4` or use the `hint` watch subcommand for a
// hint.
struct Rectangle {
width: i32,
height: i32
height: i32,
}
impl Rectangle {
@ -16,10 +11,14 @@ impl Rectangle {
if width <= 0 || height <= 0 {
panic!("Rectangle width and height cannot be negative!")
}
Rectangle {width, height}
Rectangle { width, height }
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

16
exercises/18_iterators/iterators1.rs
View file

@ -1,16 +1,19 @@
// iterators1.rs
//
// When performing operations on elements within a collection, iterators are
// essential. This module helps you get familiar with the structure of using an
// iterator and how to go through elements within an iterable collection.
//
// Make me compile by filling in the `???`s
//
// Execute `rustlings hint iterators1` or use the `hint` watch subcommand for a
// hint.
#[test]
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn iterators() {
let my_fav_fruits = vec!["banana", "custard apple", "avocado", "peach", "raspberry"];
let mut my_iterable_fav_fruits = ???; // TODO: Step 1
@ -21,4 +24,5 @@ fn main() {
assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 3
assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 4
}
}

9
exercises/18_iterators/iterators2.rs
View file

@ -1,10 +1,5 @@
// iterators2.rs
//
// In this exercise, you'll learn some of the unique advantages that iterators
// can offer. Follow the steps to complete the exercise.
//
// Execute `rustlings hint iterators2` or use the `hint` watch subcommand for a
// hint.
// Step 1.
// Complete the `capitalize_first` function.
@ -33,6 +28,10 @@ pub fn capitalize_words_string(words: &[&str]) -> String {
String::new()
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

9
exercises/18_iterators/iterators3.rs
View file

@ -1,13 +1,8 @@
// iterators3.rs
//
// This is a bigger exercise than most of the others! You can do it! Here is
// your mission, should you choose to accept it:
// 1. Complete the divide function to get the first four tests to pass.
// 2. Get the remaining tests to pass by completing the result_with_list and
// list_of_results functions.
//
// Execute `rustlings hint iterators3` or use the `hint` watch subcommand for a
// hint.
#[derive(Debug, PartialEq, Eq)]
pub enum DivisionError {
@ -43,6 +38,10 @@ fn list_of_results() -> () {
let division_results = numbers.into_iter().map(|n| divide(n, 27));
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

10
exercises/18_iterators/iterators4.rs
View file

@ -1,8 +1,3 @@
// iterators4.rs
//
// Execute `rustlings hint iterators4` or use the `hint` watch subcommand for a
// hint.
pub fn factorial(num: u64) -> u64 {
// Complete this function to return the factorial of num
// Do not use:
@ -12,7 +7,10 @@ pub fn factorial(num: u64) -> u64 {
// - additional variables
// For an extra challenge, don't use:
// - recursion
// Execute `rustlings hint iterators4` for hints.
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]

9
exercises/18_iterators/iterators5.rs
View file

@ -1,5 +1,3 @@
// iterators5.rs
//
// Let's define a simple model to track Rustlings exercise progress. Progress
// will be modelled using a hash map. The name of the exercise is the key and
// the progress is the value. Two counting functions were created to count the
@ -7,9 +5,6 @@
// functionality using iterators. Try not to use imperative loops (for, while).
// Only the two iterator methods (count_iterator and count_collection_iterator)
// need to be modified.
//
// Execute `rustlings hint iterators5` or use the `hint` watch subcommand for a
// hint.
use std::collections::HashMap;
@ -55,6 +50,10 @@ fn count_collection_iterator(collection: &[HashMap<String, Progress>], value: Pr
todo!();
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

4
exercises/19_smart_pointers/arc1.rs
View file

@ -1,5 +1,3 @@
// arc1.rs
//
// In this exercise, we are given a Vec of u32 called "numbers" with values
// ranging from 0 to 99 -- [ 0, 1, 2, ..., 98, 99 ] We would like to use this
// set of numbers within 8 different threads simultaneously. Each thread is
@ -18,8 +16,6 @@
// first TODO comment is, and create an initial binding for `child_numbers`
// where the second TODO comment is. Try not to create any copies of the
// `numbers` Vec!
//
// Execute `rustlings hint arc1` or use the `hint` watch subcommand for a hint.
#![forbid(unused_imports)] // Do not change this, (or the next) line.
use std::sync::Arc;

4
exercises/19_smart_pointers/box1.rs
View file

@ -1,5 +1,3 @@
// box1.rs
//
// At compile time, Rust needs to know how much space a type takes up. This
// becomes problematic for recursive types, where a value can have as part of
// itself another value of the same type. To get around the issue, we can use a
@ -15,8 +13,6 @@
// Step 2: create both empty and non-empty cons lists by replacing `todo!()`
//
// Note: the tests should not be changed
//
// Execute `rustlings hint box1` or use the `hint` watch subcommand for a hint.
#[derive(PartialEq, Debug)]
pub enum List {

8
exercises/19_smart_pointers/cow1.rs
View file

@ -1,5 +1,3 @@
// cow1.rs
//
// This exercise explores the Cow, or Clone-On-Write type. Cow is a
// clone-on-write smart pointer. It can enclose and provide immutable access to
// borrowed data, and clone the data lazily when mutation or ownership is
@ -9,8 +7,6 @@
// This exercise is meant to show you what to expect when passing data to Cow.
// Fix the unit tests by checking for Cow::Owned(_) and Cow::Borrowed(_) at the
// TODO markers.
//
// Execute `rustlings hint cow1` or use the `hint` watch subcommand for a hint.
use std::borrow::Cow;
@ -25,6 +21,10 @@ fn abs_all<'a, 'b>(input: &'a mut Cow<'b, [i32]>) -> &'a mut Cow<'b, [i32]> {
input
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

15
exercises/19_smart_pointers/rc1.rs
View file

@ -1,5 +1,3 @@
// rc1.rs
//
// In this exercise, we want to express the concept of multiple owners via the
// Rc<T> type. This is a model of our solar system - there is a Sun type and
// multiple Planets. The Planets take ownership of the sun, indicating that they
@ -7,8 +5,6 @@
//
// Make this code compile by using the proper Rc primitives to express that the
// sun has multiple owners.
//
// Execute `rustlings hint rc1` or use the `hint` watch subcommand for a hint.
use std::rc::Rc;
@ -33,8 +29,16 @@ impl Planet {
}
}
#[test]
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn rc1() {
let sun = Rc::new(Sun {});
println!("reference count = {}", Rc::strong_count(&sun)); // 1 reference
@ -100,4 +104,5 @@ fn main() {
println!("reference count = {}", Rc::strong_count(&sun)); // 1 reference
assert_eq!(Rc::strong_count(&sun), 1);
}
}

5
exercises/20_threads/threads1.rs
View file

@ -1,12 +1,7 @@
// threads1.rs
//
// This program spawns multiple threads that each run for at least 250ms, and
// each thread returns how much time they took to complete. The program should
// wait until all the spawned threads have finished and should collect their
// return values into a vector.
//
// Execute `rustlings hint threads1` or use the `hint` watch subcommand for a
// hint.
use std::thread;
use std::time::{Duration, Instant};

5
exercises/20_threads/threads2.rs
View file

@ -1,11 +1,6 @@
// threads2.rs
//
// Building on the last exercise, we want all of the threads to complete their
// work but this time the spawned threads need to be in charge of updating a
// shared value: JobStatus.jobs_completed
//
// Execute `rustlings hint threads2` or use the `hint` watch subcommand for a
// hint.
use std::sync::Arc;
use std::thread;

16
exercises/20_threads/threads3.rs
View file

@ -1,8 +1,3 @@
// threads3.rs
//
// Execute `rustlings hint threads3` or use the `hint` watch subcommand for a
// hint.
use std::sync::mpsc;
use std::sync::Arc;
use std::thread;
@ -42,8 +37,16 @@ fn send_tx(q: Queue, tx: mpsc::Sender<u32>) -> () {
});
}
#[test]
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn threads3() {
let (tx, rx) = mpsc::channel();
let queue = Queue::new();
let queue_length = queue.length;
@ -58,4 +61,5 @@ fn main() {
println!("total numbers received: {}", total_received);
assert_eq!(total_received, queue_length)
}
}

5
exercises/21_macros/macros1.rs
View file

@ -1,8 +1,3 @@
// macros1.rs
//
// Execute `rustlings hint macros1` or use the `hint` watch subcommand for a
// hint.
macro_rules! my_macro {
() => {
println!("Check out my macro!");

5
exercises/21_macros/macros2.rs
View file

@ -1,8 +1,3 @@
// macros2.rs
//
// Execute `rustlings hint macros2` or use the `hint` watch subcommand for a
// hint.
fn main() {
my_macro!();
}

5
exercises/21_macros/macros3.rs
View file

@ -1,9 +1,4 @@
// macros3.rs
//
// Make me compile, without taking the macro out of the module!
//
// Execute `rustlings hint macros3` or use the `hint` watch subcommand for a
// hint.
mod macros {
macro_rules! my_macro {

5
exercises/21_macros/macros4.rs
View file

@ -1,8 +1,3 @@
// macros4.rs
//
// Execute `rustlings hint macros4` or use the `hint` watch subcommand for a
// hint.
#[rustfmt::skip]
macro_rules! my_macro {
() => {

5
exercises/22_clippy/clippy1.rs
View file

@ -1,13 +1,8 @@
// clippy1.rs
//
// The Clippy tool is a collection of lints to analyze your code so you can
// catch common mistakes and improve your Rust code.
//
// For these exercises the code will fail to compile when there are Clippy
// warnings. Check Clippy's suggestions from the output to solve the exercise.
//
// Execute `rustlings hint clippy1` or use the `hint` watch subcommand for a
// hint.
use std::f32;

5
exercises/22_clippy/clippy2.rs
View file

@ -1,8 +1,3 @@
// clippy2.rs
//
// Execute `rustlings hint clippy2` or use the `hint` watch subcommand for a
// hint.
fn main() {
let mut res = 42;
let option = Some(12);

3
exercises/22_clippy/clippy3.rs
View file

@ -1,7 +1,4 @@
// clippy3.rs
//
// Here's a couple more easy Clippy fixes, so you can see its utility.
// No hints.
#[allow(unused_variables, unused_assignments)]
fn main() {

9
exercises/23_conversions/as_ref_mut.rs
View file

@ -1,11 +1,6 @@
// as_ref_mut.rs
//
// AsRef and AsMut allow for cheap reference-to-reference conversions. Read more
// about them at https://doc.rust-lang.org/std/convert/trait.AsRef.html and
// https://doc.rust-lang.org/std/convert/trait.AsMut.html, respectively.
//
// Execute `rustlings hint as_ref_mut` or use the `hint` watch subcommand for a
// hint.
// Obtain the number of bytes (not characters) in the given argument.
// TODO: Add the AsRef trait appropriately as a trait bound.
@ -26,6 +21,10 @@ fn num_sq<T>(arg: &mut T) {
???
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

6
exercises/23_conversions/from_into.rs
View file

@ -1,11 +1,6 @@
// from_into.rs
//
// The From trait is used for value-to-value conversions. If From is implemented
// correctly for a type, the Into trait should work conversely. You can read
// more about it at https://doc.rust-lang.org/std/convert/trait.From.html
//
// Execute `rustlings hint from_into` or use the `hint` watch subcommand for a
// hint.
#[derive(Debug)]
struct Person {
@ -24,7 +19,6 @@ impl Default for Person {
}
}
// Your task is to complete this implementation in order for the line `let p1 =
// Person::from("Mark,20")` to compile. Please note that you'll need to parse the
// age component into a `usize` with something like `"4".parse::<usize>()`. The

5
exercises/23_conversions/from_str.rs
View file

@ -1,13 +1,8 @@
// from_str.rs
//
// This is similar to from_into.rs, but this time we'll implement `FromStr` and
// return errors instead of falling back to a default value. Additionally, upon
// implementing FromStr, you can use the `parse` method on strings to generate
// an object of the implementor type. You can read more about it at
// https://doc.rust-lang.org/std/str/trait.FromStr.html
//
// Execute `rustlings hint from_str` or use the `hint` watch subcommand for a
// hint.
use std::num::ParseIntError;
use std::str::FromStr;

5
exercises/23_conversions/try_from_into.rs
View file

@ -1,13 +1,8 @@
// try_from_into.rs
//
// TryFrom is a simple and safe type conversion that may fail in a controlled
// way under some circumstances. Basically, this is the same as From. The main
// difference is that this should return a Result type instead of the target
// type itself. You can read more about it at
// https://doc.rust-lang.org/std/convert/trait.TryFrom.html
//
// Execute `rustlings hint try_from_into` or use the `hint` watch subcommand for
// a hint.
use std::convert::{TryFrom, TryInto};

5
exercises/23_conversions/using_as.rs
View file

@ -1,14 +1,9 @@
// using_as.rs
//
// Type casting in Rust is done via the usage of the `as` operator. Please note
// that the `as` operator is not only used when type casting. It also helps with
// renaming imports.
//
// The goal is to make sure that the division does not fail to compile and
// returns the proper type.
//
// Execute `rustlings hint using_as` or use the `hint` watch subcommand for a
// hint.
fn average(values: &[f64]) -> f64 {
let total = values.iter().sum::<f64>();

19
exercises/quiz1.rs
View file

@ -1,5 +1,3 @@
// quiz1.rs
//
// This is a quiz for the following sections:
// - Variables
// - Functions
@ -10,15 +8,21 @@
// - If Mary buys more than 40 apples, each apple only costs 1 rustbuck!
// Write a function that calculates the price of an order of apples given the
// quantity bought.
//
// No hints this time ;)
// Put your function here!
// fn calculate_price_of_apples {
// Don't modify this function!
#[test]
fn verify_test() {
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
// Don't modify this test!
#[test]
fn verify_test() {
let price1 = calculate_price_of_apples(35);
let price2 = calculate_price_of_apples(40);
let price3 = calculate_price_of_apples(41);
@ -28,4 +32,5 @@ fn verify_test() {
assert_eq!(80, price2);
assert_eq!(41, price3);
assert_eq!(65, price4);
}
}

8
exercises/quiz2.rs
View file

@ -1,5 +1,3 @@
// quiz2.rs
//
// This is a quiz for the following sections:
// - Strings
// - Vecs
@ -17,8 +15,6 @@
// - The input is going to be a Vector of a 2-length tuple,
// the first element is the string, the second one is the command.
// - The output element is going to be a Vector of strings.
//
// No hints this time!
pub enum Command {
Uppercase,
@ -40,6 +36,10 @@ mod my_module {
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
// TODO: What do we need to import to have `transformer` in scope?

14
exercises/quiz3.rs
View file

@ -1,5 +1,3 @@
// quiz3.rs
//
// This quiz tests:
// - Generics
// - Traits
@ -13,8 +11,6 @@
// Make the necessary code changes in the struct ReportCard and the impl block
// to support alphabetical report cards. Change the Grade in the second test to
// "A+" to show that your changes allow alphabetical grades.
//
// Execute `rustlings hint quiz3` or use the `hint` watch subcommand for a hint.
pub struct ReportCard {
pub grade: f32,
@ -24,11 +20,17 @@ pub struct ReportCard {
impl ReportCard {
pub fn print(&self) -> String {
format!("{} ({}) - achieved a grade of {}",
&self.student_name, &self.student_age, &self.grade)
format!(
"{} ({}) - achieved a grade of {}",
&self.student_name, &self.student_age, &self.grade
)
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;

10
gen-dev-cargo-toml/Cargo.toml
View file

@ -1,10 +0,0 @@
[package]
name = "gen-dev-cargo-toml"
publish = false
license.workspace = true
edition.workspace = true
[dependencies]
anyhow.workspace = true
serde.workspace = true
toml_edit.workspace = true

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