1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
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 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]
}
}
|
