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Github Tracking Issue for VecDeque binary search functions · Issue #78021 · rust...

 3 years ago
source link: https://github.com/rust-lang/rust/issues/78021
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vojtechkral commented on Oct 16, 2020 •

edited

Feature gate: #![feature(vecdeque_binary_search)]

This is a tracking issue for VecDeque::binary_search{,_by,_by_key}(), formerly RFC rust-lang/rfcs#2997

Public API

// alloc::collections::vec_deque

impl<T> VecDeque<T> {
    pub fn binary_search(&self, x: &T) -> Result<usize, usize>
    where
        T: Ord;

    pub fn binary_search_by<'a, F>(&'a self, f: F) -> Result<usize, usize>
    where
        F: FnMut(&'a T) -> Ordering;

    pub fn binary_search_by_key<'a, B, F>(&'a self, b: &B, f: F) -> Result<usize, usize>
    where
        F: FnMut(&'a T) -> B,
        B: Ord;

    pub fn partition_point<P>(&self, mut pred: P) -> usize
    where
        P: FnMut(&T) -> bool;
}

Steps / History

  • Implementation: #77751
  • Final commenting period (FCP)
  • Stabilization PR: #83362

Unresolved Questions

  • Stop at Equal like we do for []? #78021 (comment)
  • Add partition_point too, just like [] has?

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