9bdb0a12e4
Hints are now accessible using the CLI subcommand `rustlings hint <exercise name`. BREAKING CHANGE: This fundamentally changes the way people interact with exercises.
29 lines
714 B
Rust
29 lines
714 B
Rust
// move_semantics4.rs
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// Refactor this code so that instead of having `vec0` and creating the vector
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// in `fn main`, we instead create it within `fn fill_vec` and transfer the
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// freshly created vector from fill_vec to its caller.
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// Execute `rustlings hint move_semantics4` for hints!
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fn main() {
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let vec0 = Vec::new();
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let mut vec1 = fill_vec(vec0);
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println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
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vec1.push(88);
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println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
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}
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// `fill_vec()` no longer take `vec: Vec<i32>` as argument
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fn fill_vec() -> Vec<i32> {
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let mut vec = vec;
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vec.push(22);
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vec.push(44);
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vec.push(66);
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vec
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}
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