57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
// Copyright (C) 2018 spdf
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//
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// This file is part of Elektron.
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//
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// Elektron is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Elektron is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Elektron. If not, see <http://www.gnu.org/licenses/>.
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//
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package utilities
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/*
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The Pair and PairList have been taken from google groups forum,
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https://groups.google.com/forum/#!topic/golang-nuts/FT7cjmcL7gw.
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*/
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// Utility struct that helps in sorting map[string]float64 by value.
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type Pair struct {
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Key string
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Value float64
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}
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// A slice of pairs that implements the sort.Interface to sort by value.
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type PairList []Pair
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// Convert map[string]float64 to PairList.
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func GetPairList(m map[string]float64) PairList {
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pl := PairList{}
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for k, v := range m {
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pl = append(pl, Pair{Key: k, Value: v})
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}
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return pl
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}
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// Swap pairs in the PairList.
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func (plist PairList) Swap(i, j int) {
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plist[i], plist[j] = plist[j], plist[i]
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}
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// Get the length of the pairlist.
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func (plist PairList) Len() int {
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return len(plist)
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}
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// Compare two elements in pairlist.
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func (plist PairList) Less(i, j int) bool {
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return plist[i].Value < plist[j].Value
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}
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