F# 元组模式匹配问题
有没有一种方法可以在 F# 中进行模式匹配，以便检查双元素元组中的两个元素是否相等。我对 F# 非常陌生，对模式匹配的整个概念也很陌生。我在想一些类似的事情......
let rec funct = function
|(xs, xs) -> 0
etc. etc. etc.
但我想那太简单了哈哈。有什么建议吗？或者有没有办法做到这一点？感谢您的帮助，你们非常有帮助！
Is there a way to pattern match in F# so that it will check to see if both elements in a two element tuples are equal. I'm incredibly new to F#, and also new to the whole concept of Pattern Matching in general. I was thinking something along the lines of...
let rec funct = function
|(xs, xs) -> 0
etc. etc. etc.
But I guess that would be too easy hah. Any suggestions? Or is there even a way to do that? Thanks for your help, you guys are incredibly helpful!
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http://msdn.microsoft.com/en-us/library/dd233242.aspx
http://msdn.microsoft.com/en-us/library /dd547125.aspx
http://msdn.microsoft.com/en-us/library/dd233242.aspx
http://msdn.microsoft.com/en-us/library/dd547125.aspx
Brian的答案是正确的，但既然你还询问了其他方法，我将添加一个替代方案 - 我通常不使用
match来处理元组，因为简单的分解总是会成功（除非你使用一些复杂的方法）模式或何时）。在编写函数时，我可能会写：（但是当然，这取决于上下文 -
if可能适合小函数）Brian's answer is correct, but since you also asked about other ways I'll add an alternative - I don't usually use
matchto work with tuples because simple decomposition will always succeed (unless you use some complicated patterns orwhen). When writing a function, I would likely write:(But of course, it depends on the context - the
ifis probably good for small functions)