docs/data/it-cutprefix.md
CutPrefix returns collection without the provided leading prefix and reports whether it found the prefix. If collection doesn't start with prefix, CutPrefix returns collection, false. If prefix is empty, CutPrefix returns collection, true.
collection := func(yield func(int) bool) {
yield(1)
yield(2)
yield(3)
yield(4)
}
after, found := it.CutPrefix(collection, []int{1, 2})
var result []int
for item := range after {
result = append(result, item)
}
// result contains [3, 4], found is true
after2, found2 := it.CutPrefix(collection, []int{9, 10})
var result2 []int
for item := range after2 {
result2 = append(result2, item)
}
// result2 contains [1, 2, 3, 4], found2 is false