lo/docs/data/it-findduplicates.md

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

name	slug	sourceRef	category	subCategory	signatures	playUrl	variantHelpers	similarHelpers	position
FindDuplicates	findduplicates	it/find.go#L196	it	find	func FindDuplicates[T comparable, I ~func(func(T) bool)](collection I) I	https://go.dev/play/p/dw-VLQXKijT	it#find#findduplicates	core#slice#findduplicates it#find#finduniques it#find#findduplicatesby	90

Returns the first occurrence of each duplicated element in the collection (elements that appear more than once).

Examples:

seq := func(yield func(int) bool) {
    _ = yield(1)
    _ = yield(2)
    _ = yield(2)
    _ = yield(3)
    _ = yield(4)
    _ = yield(4)
    _ = yield(4)
}
dupSeq := it.FindDuplicates(seq)
var result []int
for v := range dupSeq {
    result = append(result, v)
}
// result contains 2, 4 (first occurrence of each duplicated element)

seq := func(yield func(string) bool) {
    _ = yield("apple")
    _ = yield("banana")
    _ = yield("apple")
    _ = yield("cherry")
    _ = yield("banana")
}
dupSeq := it.FindDuplicates(seq)
var result []string
for v := range dupSeq {
    result = append(result, v)
}
// result contains "apple", "banana" (duplicated elements)