generationCode static method
按长度生成对应的字符串 length 生成的字符串长度 containNum 是否包含数字 containLetter 是否包含字符 containSpecial 是否包含特殊字符
Implementation
static String generationCode(int length,
{bool containNum = true,
bool containLetter = true,
bool containSpecial = false}){
return GenerationCodeHelper.generationCode(length,containNum: containNum,containLetter: containLetter,containSpecial: containSpecial);
}