underscore/maps/map.go
Ruidy 1031038d42
feat: add Chunk, ContainsBy, UniqueBy, ParallelMap, map helpers
- Add `Chunk` to split slices into groups of size n.
- Add `ContainsBy` for predicate-based containment checks.
- Add `UniqueBy` to deduplicate slices by key selector.
- Add `ParallelMap` for concurrent mapping with context and error
handling.
- Add `maps.Keys` and `maps.Values` helpers for extracting map
keys/values.
- Update README and docs for new features.
- Refactor `Contains` to use `slices.Contains`.
2025-09-01 18:03:38 -04:00

16 lines
358 B
Go

package maps
import "maps"
type M[K comparable, V any] map[K]V
// Map produces a new slice of values by mapping each value in the slice through
// a transform function.
func Map[K, Q comparable, V, W any](m M[K, V], f func(K, V) M[Q, W]) M[Q, W] {
res := make(M[Q, W], len(m))
for k, v := range m {
mm := f(k, v)
maps.Copy(res, mm)
}
return res
}