Jonathan Birk cafce25
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cafce25
/ fn traits.rs
Last active
February 7, 2022 17:41
Small example to compare Fn, FnMut and FnOnce
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| fn main() { | |
| let y = String::new(); | |
| let mut x = String::new(); | |
| let onceclosure = move |s: String| { | |
| let mut z = y; | |
| z.extend(s.chars()) | |
| }; | |
| let mut mutclosure = |s: String| x.extend(s.chars()); | |
| let mut normalclosure = |_| { | |
| //can't change the surrounding env |