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note that find(f) is equivalent to filter(f).next() in the docs. #69501

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merged 1 commit into from
Feb 28, 2020

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matthiaskrgr
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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Feb 26, 2020
@@ -2119,6 +2119,7 @@ pub trait Iterator {
///
/// `find()` is short-circuiting; in other words, it will stop processing
/// as soon as the closure returns `true`.
/// `iter.find(f)` is equivalent to `iter.filter(f).next()`.
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Can this go in its own paragraph near the end? It's not really related to the short-circuiting.

@@ -2120,6 +2120,8 @@ pub trait Iterator {
/// `find()` is short-circuiting; in other words, it will stop processing
/// as soon as the closure returns `true`.
///
/// `iter.find(f)` is equivalent to `iter.filter(f).next()`.

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@tesuji
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tesuji commented Feb 27, 2020

Another thought: Let's rephrase the sentence:

Note: `Iterator::filter().next()` is equivalent to `Iterator::find(), which is preferable.`

and move it to Iterator::filter doc.

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@bors r=ecstatic-morse rollup

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bors commented Feb 27, 2020

📌 Commit 31b9764 has been approved by ecstatic-morse

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 27, 2020
bors added a commit that referenced this pull request Feb 28, 2020
Rollup of 9 pull requests

Successful merges:

 - #69379 (Fail on multiple declarations of `main`.)
 - #69430 (librustc_typeck: remove loop that never actually loops)
 - #69449 (Do not ping PR reviewers in toolstate breakage)
 - #69491 (rustc_span: Add `Symbol::to_ident_string` for use in diagnostic messages)
 - #69495 (don't take redundant references to operands)
 - #69496 (use find(x) instead of filter(x).next())
 - #69501 (note that find(f) is equivalent to filter(f).next() in the docs.)
 - #69527 (Ignore untracked paths when running `rustfmt` on repository.)
 - #69529 (don't use .into() to convert types into identical types.)

Failed merges:

r? @ghost
@bors bors merged commit 0291b6a into rust-lang:master Feb 28, 2020
@matthiaskrgr matthiaskrgr deleted the find_note branch February 29, 2020 14:13
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6 participants