51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package common
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type StringSet map[string]struct{}
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func MakeStringSet(strings ...string) StringSet {
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if len(strings) == 0 {
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return nil
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}
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set := StringSet{}
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for _, str := range strings {
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set[str] = struct{}{}
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}
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return set
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}
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func (set StringSet) Add(s string) {
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set[s] = struct{}{}
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}
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func (set StringSet) Del(s string) {
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delete(set, s)
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}
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func (set StringSet) Count() int {
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return len(set)
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}
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func (set StringSet) Has(s string) (exists bool) {
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if set != nil {
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_, exists = set[s]
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}
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return
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}
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