less循环生成样式

 @marginList: weixin, wangyi;
    //margin-left函数
    .ml-loop(@list,@i:1,@val:extract(@list,@i)) when (length(@list)>=@i) {
        .icon-@{val} {
            // margin-left: @val + @0px;
            position: relative;
             80%;
            float: right;
            &:before {
                content: " ";
                display: block;
                position: absolute;
                 26px;
                height: 26px;
                background-size: 26px;
                left: -31px;
                top: 3px;
                border: 1px solid #d8d8d8;
                border-radius: 50%;
                background-image: url(~"../../assets/image/media/@{val}_ico.png");
            }
        }
        .ml-loop(@list, (@i+1));
    }
    .ml-loop(@marginList);

效果如下：

知识点：

1、less拼接字符串语法

~'@{变量名}其它字符串'

 2、需要注意的是变量后面必须要有分号结束，否则编译报错