The last line, which prints the number of matched items in the QueryPath object, will print 4.

最后一行打印QueryPath对象中匹配项的数量，最终打印的结果为4。

youdao

Note that because you don't specify a type for the pattern-matched case, anything will match and the message is bound to the MSG name (which you need in order to print it).

注意，因为这里没有指定模式匹配的类型，所以任何消息都是匹配的，而且消息被绑定到ms g名称(为了打印它)。

youdao

Append the value to the hash value keyed on the field name if it already exists, as this will enable the simple print out of every combination of the field no matter which of the fields matched.

如果值存在，则将其追加到与字段名关联的散列值后，因为这样做将启用每个字段组合的简单输出，而不管哪些字段匹配。

youdao