带参数的混合:

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		/*.animate(@name,@time,@mode,@delay)
		{
			transition: @arguments;/*这个像是@name,@time,@mode,@delay*/
		}
		.animate(...)/*获取所有的参数*/
		{
			transition: @name @time @mode @delay;
		}
		.animate(@name,...)
		{
			transition: @arguments;/*...获取除了@name所有的参数*/
		}
/*
less中的@arguments和js中的arguments一样, 可以拿到传递进来的所有形参
*/
		/*.animate(@name,@time,...)
		{
			transition: @arguments;
		}
		div
		{
			width: 200px;
			height: 200px;
			background: red;
			.animation(all,4s,linear,0s);/*函数调用*/
		}
		div:hover
		{
			width: 400px;
			height: 400px;
			background: blue;
		}*/
		/*编译后得到的css文件*/
		div {
  width: 200px;
  height: 200px;
  background: red;
  transition: all 4s linear 0s;
}
div:hover {
  width: 400px;
  height: 400px;
  background: blue;
}

	</style>
</head>
<body>
	<div></div>
</body>
</html>