为了避免需要大量记忆的困难,Arena提供了一个“表达式构造器”(Expression Builder),通过在“表达式”栏内右击便可在弹出菜单中选择进入表达式构造器。
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现在微软已经在ASP.NET WebForms 4.0中增加了对Routing引擎更好的支持,它使用表达式构造器进行双向Routing。
Now Microsoft have added better support for using the engine in ASP.NET WebForms 4.0 by using expression builders enabling bi-directional routing.
XJ编绎器能够检测使用XPath表达式和构造XML数据中的错误。
The XJ compiler can detect errors in USES of XPath expressions and construction of XML data.
如果正在传递给解析器代码的表达式不能根据语法合法地构造,则将抛出ParseException或LexicalError。
If the expression you're passing in to the parser code can't be legally constructed according to the grammar, either a ParseException or a LexicalError is thrown.
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