iter

func MapErr ¶

func MapErr[T, R any](
	input []T,
	f func(*T) (R, error),
) ([]R, error)

MapErr is a concurrent version of Map that allows the mapping function to return an error. If one or more mapping operations return an error, MapErr returns the successfully mapped results along with a joined error containing all mapping errors. Mapping work is executed by up to runtime.GOMAXPROCS(0) worker goroutines. The returned results are ordered by completion time and may differ from the input order.