In a functional language, a program is defined as a function composed of other functions, the evaluation of which leads to the final result.

在函数式语言中，程序被定义成由其他函数组成的函数，函数求值形成最终的结果。

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Certain XPath functions, such as exist, need special attention, because they can restrain the query evaluation to a set of versions that have a specific element.

需要特别注意某些xpath函数如exist，因为它们要求具有特定元素的版本才能进行查询计算。

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The internal audit has three functions of supervision, control and evaluation.

内部审计具有监督、控制和评价三种职能。

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More and more utilities are tapping the capabilities of advanced metering technologies to enhance operations, forecasting, outage management, program evaluation and other functions.

FORBES: Smart Grid Vendors Swim Upstream