Filter function that returns an iterator in go

package main

import (
    "fmt"
    "iter"
    "slices"
)


func Filter[T any](s []T, f func(T) bool) iter.Seq[T] {
    return func(yield func(T) bool) {
        for _, v := range s {
            if f(v) {
                if !yield(v) {
                    return
                }
            }
        }
    }
}


func main() {
    var s = []string{"a", "bc", "d", "ef"}

    s = slices.Collect(Filter(s, func(s string) bool { return len(s) > 1 }))

    fmt.Println(s)
}