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Tracking Issue for String::extract_if #154318

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Tracking Issue for String::extract_if#154318
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GrigorenkoPV
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C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCS-tracking-unimplementedStatus: The feature has not been implemented.T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.
@Nokel81

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@Nokel81
Nokel81
opened on Mar 24, 2026

Feature gate: #![feature(string_extract_if)]

This is a tracking issue for extract_if on strings rust-lang/rfcs#2140

Public API

// alloc::string

impl String {
    pub fn extract_if<F>(&mut self, pred: F) -> ExtractIf<F>;
}

Steps / History

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

  • ACP: rust-lang/libs-team#...
  • Implementation: #...
  • Final comment period (FCP)1
  • Stabilization PR

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  • None yet.

Footnotes

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

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C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCS-tracking-unimplementedStatus: The feature has not been implemented.T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.

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