transformops

package

v0.3.2 Latest Latest Go to latest Published: Jun 6, 2026 License: MIT Imports: 1 Imported by: 0

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func FilterMap[T any, U any](values []T, fn contracts.FilterMapper[T, U]) []U

FilterMap returns mapped values for inputs accepted by fn while preserving nil input as nil. A nil fn rejects every value.

func IndexBy[T any, K comparable](values []T, key contracts.Keyer[T, K]) map[K]int

IndexBy builds an index of the first position for each accepted key in values.

func Map[T any, U any](values []T, fn contracts.Mapper[T, U]) []U

Map returns a slice containing fn applied to each value while preserving nil input as nil. A nil fn returns the zero value for each input element.

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