排序函数比较两个项返回三个值中的一个。
A collation function compares two items and returns one of three values.
前三个函数只是返回 dwr.xml 中 Item 的 convertor 包含的字段内容。
The first three of these functions simply return the content of the fields included in Item's convertor in dwr.xml.
从第三个代码块开始发生变化,它使用内置的getline函数的双参数形式来返回需要重新对齐的行的列表。
The changes begin in the third code block, which USES the two-argument form of the built-in getline function to return a list of all the lines in the range to be realigned.
The only thing that you have to put in the function prototype, ; again, is three things; one, the name of the function; the return value; and its arguments.
你唯一要加入到函数原型中的东西,是有三个东西,一,函数的名字;,返回值,和它的参数。
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