Re: IF Statement Testing

If you're looking to exclude specific values (not necessarily contiguous), then here is another way to solve your problem:

if (scalar grep { $expire ne $_ } @values)  { die "Don't tamper with m
+e!"; }
[download]

Where @values is filled with the values you want to check for. Also, if you are doing only numbers you can change the ne test to a != test.

Update: Added italics to "another" to emphasize TMTOWTDI. For further insight into TMTOWTDI (and why algorithms, unlike men, are not all created equal), might I suggest reading the chain of replies resulting from this post.

Comment on Re: IF Statement Testing Download Code

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Re^2: IF Statement Testing by davido (Cardinal) on May 14, 2005 at 15:41 UTC
Yes, you can use grep, but that means doing a linear search that only exits after stepping through all elements, even if the first element found satisfies the criteria. If this conditional is to be tested repeatedly, doing a hashtable lookup is more elegant and more efficient...and depending on who you ask, easier on the eyes. Dave	[reply]
Re^3: IF Statement Testing by northwind (Hermit) on May 14, 2005 at 18:37 UTC
Yes, I agree using a hash is the best implementation. Dark, wierd, and frought with perils would be the situation where `grep` would be the best choice. TMTOWTDI doesn't mean all algorithms are equal... :)	[reply]