30 lines
536 B
Go
30 lines
536 B
Go
package main
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type stringSet struct {
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items map[string]struct{}
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}
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func newStringSet(items ...string) *stringSet {
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setItems := make(map[string]struct{}, len(items))
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for _, item := range items {
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setItems[item] = struct{}{}
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}
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return &stringSet{items: setItems}
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}
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func (s *stringSet) add(item string) {
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s.items[item] = struct{}{}
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}
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func (s *stringSet) asSlice() []string {
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items := []string{}
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for item := range s.items {
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items = append(items, item)
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}
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return items
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}
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func (s *stringSet) size() int {
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return len(s.items)
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}
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