// Copyright 2015-2016 Luke Shumaker . // // This is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License as // published by the Free Software Foundation; either version 2 of // the License, or (at your option) any later version. // // This software 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 General Public License for more details. // // You should have received a copy of the GNU General Public // License along with this manual; if not, see // . package parabola_hackers import ( "crypto/rand" "math/big" ) func RandomString(alphabet string, n uint) (str string, err error) { var alphabet_len = big.NewInt(int64(len(alphabet))) var bigint *big.Int _str := make([]byte, n) for i := 0; i < len(_str); i++ { bigint, err = rand.Int(rand.Reader, alphabet_len) if err != nil { return } _str[i] = alphabet[bigint.Int64()] } str = string(_str[:]) return } func set2list(set map[string]bool) []string { list := make([]string, len(set)) i := uint(0) for item, _ := range set { list[i] = item i++ } return list }