Therefore, each operator in an XML query language must be well defined for all these possible inputs.
因此,应为所有这些可能的输入很好地定义 XML 查询语言中的每个运算符。
The only restriction is that XSLT is designed to process XML input, so the source language must be defined as an XML dialect.
惟一的限制是 XSLT 专门用于处理 XML 输入,因此源语言必须被定义为 XML 方言。
Aesthetics matter, but first and foremost a language must be useful; it must allow real-world programmers to express real-world ideas succinctly and affordably.
漂亮也很重要,但是最重要的是有用。 一种编程语言必须让真实世界的程序员简洁并以较低代价表达真实世界的想法。
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