@rowheight: 50px;

// 循环生generate-rowheight1 - generate-rowheight20 的class
.generate-rowheight(@n, @i: 2) when (@i =< @n) {
  .m-reservation .m-content .m-table .u-list .u-row .rowheight@{i} {
    height: @rowheight * @i;
  }
  .generate-rowheight(@n, (@i + 1))
}
.generate-rowheight(300);
// .m-reservation .m-content .m-table .u-list .u-row .rowheight2 {
//   height: @rowheight * 2;
// }

@rowwidth: 200px;
// 循环生w1-w300的class
.generate-w(@n, @i: 1) when (@i =< @n) {
  .w@{i} {
    width: @rowwidth * @i;
  }
  .generate-w(@n, (@i + 1))
}
.generate-w(300);


// 循环生h1-h300的class
.generate-h(300);
.generate-h(@n, @i: 1) when (@i =< @n) {
  .h@{i} {
    height: @rowheight * @i;
  }
  .generate-h(@n, (@i + 1))
}