slices/of.go

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790 B
Go
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2022-09-06 01:58:19 +02:00
package slices
func Of[T any](values ...T) []T {
return values
}
// OfMap returns a slice containing the return values of the unmapper function
// applied to any key-value pair in m
// The order is random
func OfMap[K comparable, V, T any](m map[K]V, unmapper func(K, V) T) []T {
out := make([]T, 0, len(m))
for k, v := range m {
out = append(out, unmapper(k, v))
}
return out
}
// UnmapKey is an unmapper function which returns the map key only
// and discards its value. It is supposed to be used with OfMap
func UnmapKey[K comparable, V any](key K, _ V) K {
return key
}
// UnmapValue is an unmapper function which returns the map value only
// and discards its key. It is supposed to be used with OfMap
func UnmapValue[K comparable, V any](_ K, value V) V {
return value
}