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modules2 solution
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3 changed files with 38 additions and 16 deletions
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@ -1,20 +1,19 @@
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// You can bring module paths into scopes and provide new names for them with
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// the 'use' and 'as' keywords. Fix these 'use' statements to make the code
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// compile.
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// the `use` and `as` keywords.
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mod delicious_snacks {
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// TODO: Fix these use statements
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use self::fruits::PEAR as ???
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use self::veggies::CUCUMBER as ???
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// TODO: Add the follwing two `use` statements after fixing them.
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// use self::fruits::PEAR as ???;
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// use self::veggies::CUCUMBER as ???;
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mod fruits {
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pub const PEAR: &'static str = "Pear";
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pub const APPLE: &'static str = "Apple";
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pub const PEAR: &str = "Pear";
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pub const APPLE: &str = "Apple";
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}
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mod veggies {
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pub const CUCUMBER: &'static str = "Cucumber";
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pub const CARROT: &'static str = "Carrot";
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pub const CUCUMBER: &str = "Cucumber";
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pub const CARROT: &str = "Carrot";
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}
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}
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@ -22,6 +21,6 @@ fn main() {
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println!(
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"favorite snacks: {} and {}",
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delicious_snacks::fruit,
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delicious_snacks::veggie
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delicious_snacks::veggie,
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);
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}
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@ -535,12 +535,13 @@ name = "modules2"
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dir = "10_modules"
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test = false
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hint = """
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The delicious_snacks module is trying to present an external interface that is
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different than its internal structure (the `fruits` and `veggies` modules and
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associated constants). Complete the `use` statements to fit the uses in main and
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find the one keyword missing for both constants.
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The `delicious_snacks` module is trying to present an external interface that
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is different than its internal structure (the `fruits` and `veggies` modules
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and associated constants). Complete the `use` statements to fit the uses in
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`main` and find the one keyword missing for both constants.
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Learn more at https://doc.rust-lang.org/book/ch07-04-bringing-paths-into-scope-with-the-use-keyword.html#re-exporting-names-with-pub-use"""
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Learn more in The Book:
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https://doc.rust-lang.org/book/ch07-04-bringing-paths-into-scope-with-the-use-keyword.html#re-exporting-names-with-pub-use"""
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[[exercises]]
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name = "modules3"
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@ -1 +1,23 @@
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// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
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mod delicious_snacks {
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// Added `pub` and used the expected alias after `as`.
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pub use self::fruits::PEAR as fruit;
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pub use self::veggies::CUCUMBER as veggie;
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mod fruits {
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pub const PEAR: &str = "Pear";
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pub const APPLE: &str = "Apple";
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}
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mod veggies {
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pub const CUCUMBER: &str = "Cucumber";
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pub const CARROT: &str = "Carrot";
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}
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}
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fn main() {
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println!(
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"favorite snacks: {} and {}",
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delicious_snacks::fruit,
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delicious_snacks::veggie,
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);
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}
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