Tracking Issue for Vec::pop_if · Issue #122741 · rust-lang/rust (original) (raw)
Feature gate: #![feature(vec_pop_if)]
This feature adds the Vec::pop_if method, which takes a predicate, evaluates it with the last element in the Vec if present, and returns the item if the predicate returns true. This makes it possible to conditionally remove the last element without the use of unwrap.
Public API
impl Vec { pub fn pop_if(&mut self, f: impl FnOnce(&mut T) -> bool) -> Option; }
Steps / History
- ACP: pop_if or Entry/Peek-like API for Vec and VecDeque libs-team#208
- Implementation: Implement Vec::pop_if #123107
- Final comment period (FCP)1: Tracking Issue for Vec::pop_if #122741 (comment)
- Stabilization PR: Stabilize vec_pop_if #135488
Unresolved Questions
- Do we want a
VecDeque::pop_front_ifandVecDeque::pop_back_ifAPI under this as well?- Separate tracking issue: Tracking Issue for VecDeque::pop_front_if & VecDeque::pop_back_if #135889