43 lines
863 B
Rust
43 lines
863 B
Rust
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use std::ops::{Deref, DerefMut};
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#[macro_export]
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macro_rules! set {
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() => { std::collections::HashSet::new() };
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($($x:expr),*) => {
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{
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let mut temp_set = std::collections::HashSet::new();
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$(
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temp_set.insert($x);
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)*
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temp_set
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}
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};
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}
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pub trait Distinct {
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fn distinct(&mut self);
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}
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impl<T: PartialEq + Clone> Distinct for Vec<T> {
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fn distinct(&mut self) {
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*self = self.iter()
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.fold(vec![], |mut acc, x| {
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if !acc.contains(x) {
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acc.push(x.clone());
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}
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acc
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});
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_distinct() {
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let mut vec = vec![1, 2, 3, 1, 2, 3];
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vec.distinct();
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assert_eq!(vec, vec![1, 2, 3]);
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}
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}
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