... 字面值Literals 变量引用Variable References 扩入括号的表达式Parenthesized Expressions ...
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减少样式表中变量引用的数量。
Reduce the number of variable references in your stylesheets.
同时,也可以用多个变量引用同一个对象。
And you can have multiple variables referencing the same object.
例如,您可以设置一个筛选器,以某种特定的方式修改所有变量引用的输出。
For instance, you can set up a filter that modifies the output of all variable references in a certain way.
And that's fine, because inside of curly braces can you redeclare variables with the same name if you intend to quote unquote shadow the previous variable.
那是可以的,因为,在花括号里面,你可以重新定义一个,相同名字的变量,如果你想引用之前的变量。
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