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package list
func Map[V any, T any](source []V, fun func(V) T) []T {
result := make([]T, 0, len(source))
for _, s := range source {
result = append(result, fun(s))
}
return result
}
type Pair[T, U any] struct {
Left T
Right U
}
func Chunck[T any](slice []T, size int) [][]T {
chuncks := make([][]T, size)
for i := 0; i < len(slice); i += size {
for x := 0; x < size; x++ {
end := i + x
if end > len(slice) {
break
}
chuncks[x] = append(chuncks[x], slice[end])
}
}
return chuncks
}
func Zip[T, U any](left []T, right []U) []Pair[T, U] {
// pick the array with the smaller length
l := len(left)
if len(left) > len(right) {
l = len(right)
}
pairs := make([]Pair[T, U], len(left))
for i := 0; i < l; i++ {
pairs[i] = Pair[T, U]{left[i], right[i]}
}
return pairs
}
func Revert[T any](s []T) {
for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
}
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