【以太坊源码go-ethereum阅读】sort.go

// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package accounts

// AccountsByURL implements sort.Interface for []Account based on the URL field.
// AccountsByURL基于URL字段实现[]帐户的sort.Interface。
type AccountsByURL []Account

func (a AccountsByURL) Len() int           { return len(a) }
func (a AccountsByURL) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
func (a AccountsByURL) Less(i, j int) bool { return a[i].URL.Cmp(a[j].URL) < 0 }

// WalletsByURL implements sort.Interface for []Wallet based on the URL field.
// WalletsByURL实现了基于URL字段的[]钱包的排序接口。
type WalletsByURL []Wallet

func (w WalletsByURL) Len() int           { return len(w) }
func (w WalletsByURL) Swap(i, j int)      { w[i], w[j] = w[j], w[i] }
func (w WalletsByURL) Less(i, j int) bool { return w[i].URL().Cmp(w[j].URL()) < 0 }