lo/docs/data/it-count.md

name, slug, sourceRef, category, subCategory, signatures, playUrl, variantHelpers, similarHelpers, position

name	slug	sourceRef	category	subCategory	signatures	playUrl	variantHelpers	similarHelpers	position
Count / CountBy	count	it/seq.go#L630	it	sequence	func Count[T comparable](collection iter.Seq[T], value T) int func CountBy[T any](collection iter.Seq[T], predicate func(item T) bool) int	https://go.dev/play/p/UcJ-6cANwfY	it#sequence#count it#sequence#countby	core#slice#count it#sequence#countvalues	110

Counts elements in a collection. Count counts elements equal to a value, CountBy counts elements matching a predicate.

Examples:

seq := func(yield func(int) bool) {
    _ = yield(1)
    _ = yield(2)
    _ = yield(2)
    _ = yield(3)
    _ = yield(2)
}
cnt := it.Count(seq, 2)
// cnt == 3

seq := func(yield func(string) bool) {
    _ = yield("apple")
    _ = yield("banana")
    _ = yield("apricot")
}
cnt := it.CountBy(seq, func(s string) bool {
    return len(s) > 5
})
// cnt == 2 (banana, apricot)