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42 lines
1.1 KiB
42 lines
1.1 KiB
// Copyright 2018 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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// Float64Set is a float64 set.
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type Float64Set map[float64]struct{}
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// NewFloat64Set builds a float64 set.
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func NewFloat64Set(fs ...float64) Float64Set {
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x := make(map[float64]struct{}, len(fs))
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for _, f := range fs {
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x[f] = struct{}{}
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}
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return x
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}
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// Exist checks whether `val` exists in `s`.
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func (s Float64Set) Exist(val float64) 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 Float64Set) Insert(val float64) {
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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 Float64Set) Count() int {
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return len(s)
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}
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