Tracking Issue for VecDeque::extract_if

[tisonkun]

Feature gate: #![feature(vec_deque_extract_if)]

This is a tracking issue for rust-lang/libs-team#673

Public API

Almost the same as vec::ExtractIf but for VecDeque:

impl<T, A: Allocator> VecDeque<T, A> {
    pub fn extract_if<F, R>(&mut self, range: R, filter: F) -> ExtractIf<'_, T, F, A>
    where
        F: FnMut(&mut T) -> bool,
        R: RangeBounds<usize>,
    {
        ExtractIf::new(self, filter, range)
    }
}

pub struct ExtractIf<'a, T, F, A: Allocator = Global> {
    vec: &'a mut VecDeque<T, A>,
    idx: usize,
    end: usize,
    del: usize,
    old_len: usize,
    pred: F,
}

Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

• ACP: Add VecDeque::extract_if libs-team#673
• Implementation: #...
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩