Trait VecRemoveIf

pub trait VecRemoveIf<T> {
    // Required methods
    fn remove_if<F: Fn(&T) -> bool>(&mut self, closure: F) -> Vec<T>;
    fn swap_remove_if<F: Fn(&T) -> bool>(&mut self, closure: F) -> Vec<T>;
}

Add Self::remove_if and Self::swap_remove_if to Vec

Required Methods

fn remove_if<F: Fn(&T) -> bool>(&mut self, closure: F) -> Vec<T>

Run Vec::remove on each element in a vec when closure returns true

Example

use vec_remove_if::VecRemoveIf;
let mut v = vec![1, 2, 3, 4, 5, 6, 7, 8];

assert_eq!(
    vec![1, 2, 3],
    v.remove_if(|e| e < &4)
);
assert_eq!(
    vec![4, 5, 6, 7, 8],
    v
);

fn swap_remove_if<F: Fn(&T) -> bool>(&mut self, closure: F) -> Vec<T>

Run Vec::swap_remove on each element in a vec when closure returns true

Self::swap_remove_if is more efficient, but does not preserve the element order of the vector (See Vec::swap_remove).

Example

use vec_remove_if::VecRemoveIf;
let mut v = vec![1, 2, 3, 4, 5, 6, 7, 8];

assert_eq!(
    vec![1, 2, 3],
    v.swap_remove_if(|e| e < &4)
);
assert_eq!(
    vec![8, 7, 6, 4, 5],
    v
 );

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T> VecRemoveIf<T> for Vec<T>

fn remove_if<F: Fn(&T) -> bool>(&mut self, closure: F) -> Vec<T>

fn swap_remove_if<F: Fn(&T) -> bool>(&mut self, closure: F) -> Vec<T>

Implementors