// Copyright 2018 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package set // Strings represents a set of strings. type Strings map[string]struct{} func (ss *Strings) Len() int { return len(*ss) } func (ss *Strings) Has(s string) bool { _, ok := (*ss)[s] return ok } func (ss *Strings) Set(s string) { if *ss == nil { *ss = make(map[string]struct{}) } (*ss)[s] = struct{}{} } func (ss *Strings) Clear(s string) { delete(*ss, s) }