... Stopping criteria:停止准则; Function value check:函数值检查; User-supplied derivatives:用户自定义微分(或梯度)函数; ...
基于1个网页-相关网页
In this example, you want the getopt function to check for the existence of any of the option letters in that string, and each should have a value.
在这个示例中,希望让getopt函数检查命令行中是否有任何选项字母,而且每个选项应该有一个值。
You can also use the is_boolean function to check whether the supplied value is true or false.
还可以使用is _ boolean函数检查提供的值是true还是false。
The WHERE clause invokes the XMLExists function, specifying an XPath expression that prompts DB2 to navigate to the "zip" element and check for a value of 95116.
WHERE 子句调用 XMLExists 函数,指定一个 XPath 表达式,这个表达式使 DB2 找到 "zip" 元素并检查元素值是否为 95116。"
应用推荐