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| author | okayurisotto <okayurisotto@proton.me> | 2023-07-14 10:45:01 +0900 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-07-14 10:45:01 +0900 |
| commit | 2b6dbd4fcbec380d65b0c318932d9eeb3fcb3f7b (patch) | |
| tree | 125b6f724450c37bd1c025d5b3e09c50dc2b20c9 /packages/backend/src/misc/prelude/array.ts | |
| parent | refactor: `substr` -> `substring` (#11273) (diff) | |
| download | sharkey-2b6dbd4fcbec380d65b0c318932d9eeb3fcb3f7b.tar.gz sharkey-2b6dbd4fcbec380d65b0c318932d9eeb3fcb3f7b.tar.bz2 sharkey-2b6dbd4fcbec380d65b0c318932d9eeb3fcb3f7b.zip | |
refactor: 可読性のため一部で`Array.prototype.at`を使うように (#11274)
* refactor: `Array.prototype.at`を使うように
* fixup! refactor: `Array.prototype.at`を使うように
Diffstat (limited to 'packages/backend/src/misc/prelude/array.ts')
| -rw-r--r-- | packages/backend/src/misc/prelude/array.ts | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/packages/backend/src/misc/prelude/array.ts b/packages/backend/src/misc/prelude/array.ts index 0b2830cb7b..2524eacfb3 100644 --- a/packages/backend/src/misc/prelude/array.ts +++ b/packages/backend/src/misc/prelude/array.ts @@ -67,8 +67,9 @@ export function maximum(xs: number[]): number { export function groupBy<T>(f: EndoRelation<T>, xs: T[]): T[][] { const groups = [] as T[][]; for (const x of xs) { - if (groups.length !== 0 && f(groups[groups.length - 1][0], x)) { - groups[groups.length - 1].push(x); + const lastGroup = groups.at(-1); + if (lastGroup !== undefined && f(lastGroup[0], x)) { + lastGroup.push(x); } else { groups.push([x]); } |