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66 lines
1.5 KiB
66 lines
1.5 KiB
// Copyright 2019 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package set
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// IntSet is a int set.
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type IntSet map[int]struct{}
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// NewIntSet builds a IntSet.
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func NewIntSet() IntSet {
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return make(map[int]struct{})
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}
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// Exist checks whether `val` exists in `s`.
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func (s IntSet) Exist(val int) bool {
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_, ok := s[val]
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return ok
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}
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// Insert inserts `val` into `s`.
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func (s IntSet) Insert(val int) {
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s[val] = struct{}{}
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}
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// Count returns the number in Set s.
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func (s IntSet) Count() int {
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return len(s)
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}
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// Int64Set is a int64 set.
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type Int64Set map[int64]struct{}
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// NewInt64Set builds a Int64Set.
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func NewInt64Set(xs ...int64) Int64Set {
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set := make(Int64Set, len(xs))
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for _, x := range xs {
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set.Insert(x)
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}
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return set
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}
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// Exist checks whether `val` exists in `s`.
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func (s Int64Set) Exist(val int64) bool {
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_, ok := s[val]
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return ok
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}
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// Insert inserts `val` into `s`.
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func (s Int64Set) Insert(val int64) {
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s[val] = struct{}{}
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}
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// Count returns the number in Set s.
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func (s Int64Set) Count() int {
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return len(s)
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}
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