Re^2: foreach in HoHoA problems

Thanks for the help. All of the print statements included are solely for debugging purposes. Eventually, I will be removing them all.

And you're right, I want to be iterating over the indices of the array, not the values. I certainly hope there aren't 7 million elemnts in the array! I think 70 is far more than I am expecting. As for you're suggestion of:

foreach my $index ( 0 .. $#array )

Would I have to write that as:

foreach my $index ( 0 .. $#matches{$fastaseq}{$sitekey} )?

As for undefined elements, I don't expect I'll see any. In a previous subroutine, I am pushing the positions of matches to an m// into the arrays in question, (that's what the 7 million coresponds to), so I expect all array elements will be numerical. Whether or not the array is undefined, however, depends entirely on whether or not m// came back as true. That's why I threw the if (@) in there.

Thanks.
Matt

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Re^3: foreach in HoHoA problems by graff (Chancellor) on Oct 28, 2006 at 21:53 UTC
Would I have to write that as: `foreach my $index ( 0 .. $#matches{$fastaseq}{$sitekey} )?` [download] You would have to write that as: `foreach my $index ( 0 .. $#{$matches{$fastaseg}{$sitekey}} )` [download] Note the extra braces following "$#" and fully surrounding the `$matches{$fastaseg}{$sitekey}` -- that latter bit constitutes an array reference, and perl won't be able to parse it as such next to "$#" unles the braces are there to establish the precedence for de-referencing the array ref that is the value of that hash element. As for undefined elements, I don't expect I'll see any. Yeah, we've all heard that before... (and we've all caught ourselves saying and believing the same thing, in reference to some chunk of code we've written). That's the best thing about making good use of a good debugger: it helps us to get past this kind of fantasy.	[reply] [d/l] [select]

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Re^3: foreach in HoHoA problems
by graff (Chancellor) on Oct 28, 2006 at 21:53 UTC

Would I have to write that as:
foreach my $index ( 0 .. $#matches{$fastaseq}{$sitekey} )?
[download]

You would have to write that as:

foreach my $index ( 0 .. $#{$matches{$fastaseg}{$sitekey}} )
[download]

$matches{$fastaseg}{$sitekey}

As for undefined elements, I don't expect I'll see any.

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