23 lines
821 B
Rust
Executable file
23 lines
821 B
Rust
Executable file
#![feature(plugin)]
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#![plugin(clippy)]
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#[deny(needless_range_loop, explicit_iter_loop)]
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fn main() {
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let mut vec = vec![1, 2, 3, 4];
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let vec2 = vec![1, 2, 3, 4];
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for i in 0..vec.len() { //~ERROR the loop variable `i` is only used to index `vec`.
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println!("{}", vec[i]);
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}
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for i in 0..vec.len() { //~ERROR the loop variable `i` is used to index `vec`.
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println!("{} {}", vec[i], i);
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}
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for i in 0..vec.len() { // not an error, indexing more than one variable
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println!("{} {}", vec[i], vec2[i]);
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}
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for _v in vec.iter() { } //~ERROR it is more idiomatic to loop over `&vec`
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for _v in vec.iter_mut() { } //~ERROR it is more idiomatic to loop over `&mut vec`
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for _v in &vec { } // these are fine
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for _v in &mut vec { } // these are fine
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}
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