27 lines
553 B
Go
27 lines
553 B
Go
package sugar
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// StrSet a set type for strings.
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type StrSet map[string]struct{}
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// Add adds a new key to the set if it does not already exist.
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func (s *StrSet) Add(str string) {
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(*s)[str] = struct{}{}
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}
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// Has checks if the given string is present in the set.
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func (s *StrSet) Has(str string) bool {
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if _, ok := (*s)[str]; ok {
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return true
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}
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return false
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}
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// AddHas behaves like Add, but returns true if the key already existed.
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func (s *StrSet) AddHas(str string) bool {
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if ok := s.Has(str); ok {
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return ok
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}
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s.Add(str)
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return false
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}
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