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https://github.com/rust-lang/rustlings.git
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commit
965a8a4413
@ -7,13 +7,13 @@
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//
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//
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// Execute `rustlings hint vecs2` or use the `hint` watch subcommand for a hint.
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// Execute `rustlings hint vecs2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
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fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
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for element in v.iter_mut() {
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for element in v.iter_mut() {
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// TODO: Fill this up so that each element in the Vec `v` is
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// TODO: Fill this up so that each element in the Vec `v` is
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// multiplied by 2.
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// multiplied by 2.
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???
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*element *=2;
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}
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}
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// At this point, `v` should be equal to [4, 8, 12, 16, 20].
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// At this point, `v` should be equal to [4, 8, 12, 16, 20].
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@ -24,7 +24,7 @@ fn vec_map(v: &Vec<i32>) -> Vec<i32> {
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v.iter().map(|element| {
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v.iter().map(|element| {
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// TODO: Do the same thing as above - but instead of mutating the
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// TODO: Do the same thing as above - but instead of mutating the
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// Vec, you can just return the new number!
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// Vec, you can just return the new number!
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???
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element*2
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}).collect()
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}).collect()
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}
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}
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