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https://github.com/rust-lang/rustlings
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47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
// Make me compile! Scroll down for hints :)
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mod us_presidential_frontrunners {
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use self::democrats::HILLARY_CLINTON as democrat;
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use self::republicans::DONALD_TRUMP as republican;
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mod democrats {
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pub const HILLARY_CLINTON: &'static str = "Hillary Clinton";
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pub const BERNIE_SANDERS: &'static str = "Bernie Sanders";
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}
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mod republicans {
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pub const DONALD_TRUMP: &'static str = "Donald Trump";
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pub const JEB_BUSH: &'static str = "Jeb Bush";
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}
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}
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fn main() {
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println!("candidates: {} and {}",
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us_presidential_frontrunners::democrat,
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us_presidential_frontrunners::republican);
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}
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// The us_presidential_frontrunners module is trying to present an external
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// interface (the `democrat` and `republican` constants) that is different than
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// its internal structure (the `democrats` and `republicans` modules and
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// associated constants). It's almost there except for one keyword missing for
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// each constant.
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// One more hint: I wish the compiler error, instead of saying "unresolved name
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// `us_presidential_frontrunners::democrat`", could say "constant
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// `us_presidential_frontrunners::democrat` is private"!
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