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- // Copyright (c) 2020 Shivaram Lingamneni
- // released under the MIT license
-
- package utils
-
- type empty struct{}
-
- type HashSet[T comparable] map[T]empty
-
- func (s HashSet[T]) Has(elem T) bool {
- _, ok := s[elem]
- return ok
- }
-
- func (s HashSet[T]) Add(elem T) {
- s[elem] = empty{}
- }
-
- func (s HashSet[T]) Remove(elem T) {
- delete(s, elem)
- }
-
- func SetLiteral[T comparable](elems ...T) HashSet[T] {
- result := make(HashSet[T], len(elems))
- for _, elem := range elems {
- result.Add(elem)
- }
- return result
- }
-
- func CopyMap[K comparable, V any](input map[K]V) (result map[K]V) {
- result = make(map[K]V, len(input))
- for key, value := range input {
- result[key] = value
- }
- return
- }
-
- func SliceContains[T comparable](slice []T, elem T) (result bool) {
- for _, t := range slice {
- if elem == t {
- return true
- }
- }
- return false
- }
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