github.com/erda-project/erda-infra@v1.0.10-0.20240327085753-f3a249292aeb/pkg/set/unsafe_set.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package set
    16  
    17  // set Set data structure
    18  type set map[interface{}]struct{}
    19  
    20  func (set set) Add(element interface{}) bool {
    21  	if _, ok := set[element]; ok {
    22  		return false
    23  	}
    24  	set[element] = struct{}{}
    25  	return true
    26  }
    27  
    28  func (set set) Remove(element interface{}) {
    29  	delete(set, element)
    30  }
    31  
    32  func (set set) Contains(elements ...interface{}) bool {
    33  	for _, e := range elements {
    34  		if _, ok := (set)[e]; !ok {
    35  			return false
    36  		}
    37  	}
    38  	return true
    39  }
    40  
    41  func (set set) Clear() {
    42  	for k := range set {
    43  		delete(set, k)
    44  	}
    45  }
    46  
    47  func (set set) Len() int {
    48  	return len(set)
    49  }
    50  
    51  func newSet() set {
    52  	return make(set)
    53  }