maps

Documentation

Index

• func EnsureNotNil[K comparable, V any](m map[K]V) map[K]V
• func MatchesFilters[K comparable, V comparable](kv map[K]V, inclusion map[K][]V, exclusion map[K][]V) bool
• func Reverse[K, V comparable](m map[K]V) map[V]K

Functions

func EnsureNotNil

func EnsureNotNil[K comparable, V any](m map[K]V) map[K]V

EnsureNotNil ensures a given map is not nil. Returns a new empty (but non-nil) map if the original map was nil.

func MatchesFilters

func MatchesFilters[K comparable, V comparable](
	kv map[K]V,
	inclusion map[K][]V,
	exclusion map[K][]V,
) bool

MatchesFilters returns true if the given map matches the given inclusion and exclusion filters. This requires that the map's values are comparable.

func Reverse

func Reverse[K, V comparable](m map[K]V) map[V]K

Reverse returns a new map where the keys and values are reversed from the original input map. This is useful when we want to index a particular search on both keys and values e.g. mapping of public identifiers to internal identifiers and viceversa.

Note that if values are not unique in the input map, the retured map will only have a key-value pair for the last ocurrence of the value (which is the key in the generated map) in the input map.