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Code Issues Releases Activity

fix: traverse

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2025-11-15 12:13:37 +01:00
parent 02d0be9dad
commit ab868315d4
21 changed files with 381 additions and 140 deletions
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24
v2/internal/array/array.go
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@@ -15,6 +15,10 @@
package array
func Of[GA ~[]A, A any](a A) GA {
return GA{a}
}
func Slice[GA ~[]A, A any](low, high int) func(as GA) GA {
return func(as GA) GA {
length := len(as)
@@ -140,7 +144,7 @@ func UpsertAt[GA ~[]A, A any](a A) func(GA) GA {
func MonadMap[GA ~[]A, GB ~[]B, A, B any](as GA, f func(a A) B) GB {
count := len(as)
bs := make(GB, count)
for i := count - 1; i >= 0; i-- {
for i := range count {
bs[i] = f(as[i])
}
return bs
@@ -155,7 +159,7 @@ func Map[GA ~[]A, GB ~[]B, A, B any](f func(a A) B) func(GA) GB {
func MonadMapWithIndex[GA ~[]A, GB ~[]B, A, B any](as GA, f func(idx int, a A) B) GB {
count := len(as)
bs := make(GB, count)
for i := count - 1; i >= 0; i-- {
for i := range count {
bs[i] = f(i, as[i])
}
return bs
@@ -164,3 +168,19 @@ func MonadMapWithIndex[GA ~[]A, GB ~[]B, A, B any](as GA, f func(idx int, a A) B
func ConstNil[GA ~[]A, A any]() GA {
return (GA)(nil)
}
func Concat[GT ~[]T, T any](left, right GT) GT {
// some performance checks
ll := len(left)
if ll == 0 {
return right
}
lr := len(right)
if lr == 0 {
return left
}
// need to copy
buf := make(GT, ll+lr)
copy(buf[copy(buf, left):], right)
return buf
}