github.com/whtcorpsinc/milevadb-prod@v0.0.0-20211104133533-f57f4be3b597/soliton/set/float64_set.go (about)

     1  // Copyright 2020 WHTCORPS INC, 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  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package set
    15  
    16  // Float64Set is a float64 set.
    17  type Float64Set map[float64]struct{}
    18  
    19  // NewFloat64Set builds a float64 set.
    20  func NewFloat64Set(fs ...float64) Float64Set {
    21  	x := make(Float64Set, len(fs))
    22  	for _, f := range fs {
    23  		x.Insert(f)
    24  	}
    25  	return x
    26  }
    27  
    28  // Exist checks whether `val` exists in `s`.
    29  func (s Float64Set) Exist(val float64) bool {
    30  	_, ok := s[val]
    31  	return ok
    32  }
    33  
    34  // Insert inserts `val` into `s`.
    35  func (s Float64Set) Insert(val float64) {
    36  	s[val] = struct{}{}
    37  }
    38  
    39  // Count returns the number in Set s.
    40  func (s Float64Set) Count() int {
    41  	return len(s)
    42  }