C++去除字符串空格和tab

代码：

static  std::string     trim(std::string s)
{
    std::string ret = "";
    if(s.empty()){
        return ret;
    }
    std::cout<<s.find("\t")<<1111;
    for(size_t i=0; i<s.size(); i++){
        if('\t' != s[i]){
            ret += s[i];
        }
    }
    return ret;
}