Function drain_filter

pub fn drain_filter<T>(
    vector: &mut Vec<T>,
    predicate: impl FnMut(&T) -> bool,
) -> Vec<T>

Drain and filter at the same time, accepts a mutable vector ref and predicate. The predicate receives a vector element ref for the current iteration and in-place removes the element from the vector, if predicate returns true. Returns and array of removed elements back.

Examples

use cs_utils::{drain_filter, random_bool};
 
let mut test_vector = vec![
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
    random_bool(),
];
 
let removed_items = drain_filter(
    &mut test_vector,
    |el| {
        return *el;
    },
);
 
assert!(
    !removed_items.contains(&false),
    "Removed items must not contain \"false\" values.",
);
 
assert!(
    !test_vector.contains(&true),
    "Removed items must not contain \"true\" values.",
);