tool

Documentation

Index

• func MapToSlice[K comparable, E, V1, V2 any, IN ~map[K]V1, OUT ~[]V2](in IN, v1Len func(V1) int, appendV1ToSlice func(V1, []E) []E, ...) OUT
• func SliceToMap[K comparable, E, V1, V2 any, IN ~[]V1, OUT ~map[K]V2](in IN, v1Len func(V1) int, appendV1ToSlice func(V1, []E) []E, ...) OUT
• func StringMapToSliceWithBytes[V2 any, IN ~map[string][]string, OUT ~[]V2](from IN, elemToV2 func(string, [][]byte) V2) OUT
• func TransformMap[K comparable, E, V1, V2 any, IN ~map[K]V1, OUT ~map[K]V2](in IN, v1Len func(V1) int, appendV1ToSlice func(V1, []E) []E, ...) OUT
• type Accumulator
  • func (a *Accumulator[E, V]) Clone(v V) []E
  • func (a *Accumulator[E, V]) Grow(size int)

Functions

func MapToSlice

func MapToSlice[K comparable, E, V1, V2 any, IN ~map[K]V1, OUT ~[]V2](
	in IN,
	v1Len func(V1) int,
	appendV1ToSlice func(V1, []E) []E,
	elemToV2 func(K, []E) V2,
) OUT

func SliceToMap

func SliceToMap[K comparable, E, V1, V2 any, IN ~[]V1, OUT ~map[K]V2](
	in IN,
	v1Len func(V1) int,
	appendV1ToSlice func(V1, []E) []E,
	elemToV2 func(V1, []E) (K, V2),
) OUT

func StringMapToSliceWithBytes

func StringMapToSliceWithBytes[V2 any, IN ~map[string][]string, OUT ~[]V2](
	from IN,
	elemToV2 func(string, [][]byte) V2,
) OUT

func TransformMap

func TransformMap[K comparable, E, V1, V2 any, IN ~map[K]V1, OUT ~map[K]V2](
	in IN,
	v1Len func(V1) int,
	appendV1ToSlice func(V1, []E) []E,
	elemToV2 func([]E) V2,
) OUT

TransformMap transforms map of type IN into a map of type OUT. The main point of this function is to optimize memory usage. It allocates a single slice for the elements in values of the map rather than a slice per key.

Types

type Accumulator

type Accumulator[E, V any] struct {
	Append func(V, []E) []E
	// contains filtered or unexported fields
}

Accumulator allows to reduce the number of allocations by packing multiple slices into a single big slice.

func (*Accumulator[E, V]) Clone

func (a *Accumulator[E, V]) Clone(v V) []E

func (*Accumulator[E, V]) Grow

func (a *Accumulator[E, V]) Grow(size int)