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lo/docs/data/it-findorelse.md
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2025-10-08 19:35:53 +02:00

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name, slug, sourceRef, category, subCategory, signatures, playUrl, variantHelpers, similarHelpers, position
name slug sourceRef category subCategory signatures playUrl variantHelpers similarHelpers position
FindOrElse findorelse it/find.go#L147 it find
func FindOrElse[T any](collection iter.Seq[T], fallback T, predicate func(item T) bool) T
https://go.dev/play/p/8VgPO9mi-t
it#find#findorelse
core#slice#findorelse
it#find#find
70

Searches for an element using a predicate or returns a fallback value if not found.

Examples:

seq := func(yield func(int) bool) {
    _ = yield(10)
    _ = yield(20)
    _ = yield(30)
    _ = yield(40)
}
result := it.FindOrElse(seq, 99, func(x int) bool {
    return x > 25
})
// result == 30
seq := func(yield func(string) bool) {
    _ = yield("apple")
    _ = yield("banana")
    _ = yield("cherry")
}
result := it.FindOrElse(seq, "unknown", func(s string) bool {
    return len(s) > 10
})
// result == "unknown" (fallback value)