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// 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
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// 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() Float64Set {
return make(map[float64]struct{})
// 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{}{}
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