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add slice convert + map convert #2

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Merged
merged 1 commit into from
Oct 25, 2025
Merged

add slice convert + map convert #2

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9 changes: 9 additions & 0 deletions map.go
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,15 @@ func EachMap[K Comparable, V any](in map[K]V, call func(key K, value V)) {
}
}

func ConvertMap[K1, K2 comparable, V1, V2 any](in map[K1]V1, call func(key K1, value V1) (K2, V2)) (out map[K2]V2) {
out = make(map[K2]V2, len(in))
for k1, v1 := range in {
k2, v2 := call(k1, v1)
out[k2] = v2
}
return
}

func FilterMap[K comparable, V any](in map[K]V, filter func(key K, value V) bool) (out map[K]V) {
out = make(map[K]V, len(in))
for k, v := range in {
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8 changes: 8 additions & 0 deletions slice.go
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,14 @@ func Each[T any](in []T, call func(value T, index int)) {
}
}

func Convert[T, V any](in []T, call func(value T, index int) V) (out []V) {
out = make([]V, len(in))
for i, v := range in {
out[i] = call(v, i)
}
return
}

func Join[T any](in ...[]T) (out []T) {
size := 0
for _, m := range in {
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