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11
exercises/variables/variables5.rs
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11
exercises/variables/variables5.rs
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// variables5.rs
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// Make me compile! Execute the command `rustlings hint variables5` if you want a hint :)
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// I AM NOT DONE
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fn main() {
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let number = "3";
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println!("Number {}", number);
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number = 3;
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println!("Number {}", number);
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}
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14
info.toml
14
info.toml
@ -41,6 +41,20 @@ value. We can't print out something that isn't there; try giving x a value!
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This is an error that can cause bugs that's very easy to make in any
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programming language -- thankfully the Rust compiler has caught this for us!"""
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[[exercises]]
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name = "variables5"
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path = "exercises/variables/variables5.rs"
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mode = "compile"
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hint = """
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In variables3 we already learned how to make an immutable variable mutable
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using a special keyword. Unfortunately this doesn't help us much in this exercise
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because we want to assign a different typed value to an existing variable. Sometimes
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you may also like to reuse existing variable names because you are just converting
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values to different types like in this exercise.
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Fortunately Rust has a powerful solution to this problem: 'Shadowing'!
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You can read more about 'Shadowing' in the book's section 'Variables and Mutability'.
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Try to solve this exercise afterwards using this technique."""
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# IF
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[[exercises]]
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