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| PerlMonks |
Re: Re: Re: Re: Re: Re: Re: Useless use of substr in void contextby leira (Monk) |
| on Feb 25, 2004 at 03:38 UTC ( [id://331593]=note: print w/replies, xml ) | Need Help?? |
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I believe the suggestion is that you use the URL for the key, and set the *value* to undef. Then you'll still have a hash with all of the URLs in it as keys.
Like this: $fetched{$url} = undef; Does this make sense? Linda
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