tidb float64_set 源码
tidb float64_set 代码
文件路径：/util/set/float64_set.go
// Copyright 2018 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package set
// Float64Set is a float64 set.
type Float64Set map[float64]struct{}
// NewFloat64Set builds a float64 set.
func NewFloat64Set(fs ...float64) Float64Set {
x := make(Float64Set, len(fs))
for _, f := range fs {
x.Insert(f)
}
return x
}
// Exist checks whether `val` exists in `s`.
func (s Float64Set) Exist(val float64) bool {
_, ok := s[val]
return ok
}
// Insert inserts `val` into `s`.
func (s Float64Set) Insert(val float64) {
s[val] = struct{}{}
}
// Count returns the number in Set s.
func (s Float64Set) Count() int {
return len(s)
}
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