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784 B
784 B
name, slug, sourceRef, category, subCategory, signatures, playUrl, variantHelpers, similarHelpers, position
| name | slug | sourceRef | category | subCategory | signatures | playUrl | variantHelpers | similarHelpers | position | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| First | first | it/find.go#L362 | it | find |
|
https://go.dev/play/p/5MgZD9-zl |
|
|
120 |
Returns the first element of a collection and a boolean indicating availability. Returns zero value and false if the collection is empty.
Examples:
seq := func(yield func(int) bool) {
_ = yield(10)
_ = yield(20)
_ = yield(30)
}
first, ok := it.First(seq)
// first == 10, ok == true
seq := func(yield func(string) bool) {
// empty sequence
}
first, ok := it.First(seq)
// first == "", ok == false (zero value for string)