comparison operator

基本解释

std::pair has a comparison operator that does effectively the same comparisons as your version.
pair有一个比较运算符，跟你刚才写的那个一样。
These assertions work on user-defined types too, but you must overload the corresponding comparison operator (==, !=, so on).
这些断言也适用于用户定义的类型，但是必须覆盖相应的比较操作符（==、! =、等等）。
Type a valid XPath expression (a reference on XPath is included in the Resources section following), a comparison operator (=, >, or and the expected number of nodes that the query should return.
键入一个有效的 XPath 表达式（有关 XPath 的一个参考在下面的参考资料部分中），一个比较运算符（=， >，或和查询应该返回的所期望的结点数。