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46 lines (37 loc) · 724 Bytes
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string_set.go
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46 lines (37 loc) · 724 Bytes
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package set
var exists = struct{}{}
type stringSet struct {
m map[string]struct{}
}
func NewStringSet() *stringSet {
s := &stringSet{}
s.m = make(map[string]struct{})
return s
}
func (s *stringSet) Add(value string) {
s.m[value] = exists
}
func (s *stringSet) AddValues(values []string) {
for _, v := range values {
s.Add(v)
}
}
func (s *stringSet) Remove(value string) {
delete(s.m, value)
}
func (s *stringSet) RemoveValues(values []string) {
for _, v := range values {
s.Remove(v)
}
}
func (s *stringSet) Contains(value string) bool {
_, c := s.m[value]
return c
}
func (s *stringSet) ToSlice() []string {
r := make([]string, 0, len(s.m))
for k := range s.m {
r = append(r, k)
}
return r
}