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more random funcs

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This commit is contained in:
Chris Wanstrath 2025-09-28 22:14:24 -07:00
parent 0fe73b6f3e
commit 010730127b
1 changed files with 12 additions and 0 deletions
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12
app/src/shared/utils.ts
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@ -20,3 +20,15 @@ export function rng(min: number, max = 0) {
max = Math.floor(max) max = Math.floor(max)
return Math.floor(Math.random() * (max - min + 1)) + min return Math.floor(Math.random() * (max - min + 1)) + min
} }
// randomElement([5, 7, 9]) #=> 7
export function randomElement<T>(list: T[]): T | undefined {
if (!list.length) return
return list[rng(0, list.length - 1)]
}
// randomIndex([5, 7, 9]) #=> 1
export function randomIndex<T>(list: T[]): number | undefined {
if (!list.length) return
return rng(0, list.length - 1)
}