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Re: Re: Simple Hash Q.

by cei (Monk)
on Nov 26, 2000 at 09:06 UTC ( [id://43349]=note: print w/replies, xml ) Need Help??


in reply to Re: Simple Hash Q.
in thread Simple Hash Q.

Warnings were on. Strict was used. The curlies vs. parens were the culprit, and I thought I was copying that code out of the perldocs. They aren't too explicit on using {} with $ and () with %.

*shrug*

Thanks.

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Re: Re: Re: Simple Hash Q.
by Fastolfe (Vicar) on Nov 26, 2000 at 09:14 UTC
    Weird, when I try to do something like that with my code using warnings, I get this under 5.6 and 5.00503:
    Reference found where even-sized list expected at test line 1.
    So it's very strange that warnings/strict would not have indicated that this was the problem to begin with.
      I was doing it as a CGI on a CobaltRaq. The error log just gave me grief about the cgi-wrapper without telling me what the problem was.

      Likewise use CGI::Carp qw/fatalsToBrowser/; didn't tell me anything useful either.

      Regardless, I don't know that that particular error message would have told me that {} vs () was at fault.

        Here's the trick: verify that all of your CGI scripts run from the command line before you run them through a browser. If you must run it through a browser, don't forget use diagnostics and try running it without a wrapper that might mask the errors.
        I don't know that that particular error message would have told me that {} vs () was at fault.
        Well, the error message would have mentioned a couple of things: one, which line number the problem was on. That's very important. Two, once you are more familiar with Perl, you'll see that a list is wrapped in parens () and that braces {} will return a reference. Once that becomes more ingrained, error messages like that will make more sense.

        Cheers,
        Ovid

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