Re: Array refs problem ...

Find out which array dereference isn't getting the array reference it expects.

$Row->{ Cells }?
$FieldOrder?
$Row->{ Cells }[ ( @$FieldOrder ) ]?

Update: Your use of 0+@$FieldOrder is very suspicious.

Update: You have an array slice in the top code (note the "@" in @Array1[ LIST ]), but you have an array lookup in the bottom code (note the "$" in $Row->{ Cells }[ SCALAR ])

The equivalent of

@Array1[ LIST ]
^
|
[download]

@{ $array_ref }[ LIST ]
^
|
[download]

You want

@{ $Row->{ Cells } } = @{ $Row->{ Cells } }[ @$FieldOrder ];
[download]

See Dereferencing Syntax and References Quick Reference.

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Re^2: Array refs problem ... by Tharg (Scribe) on Jun 24, 2009 at 16:35 UTC
Yeah I think the problem is with the way I'm dong that somehow. Adding : `printf STDOUT ("1-->%s<--\n", $Row->{ Cells } ); printf STDOUT ("2-->%s<--\n", $FieldOrder ); printf STDOUT ("3-->%s<--\n", $Row->{ Cells }[ ( @$FieldOrder ) ] ) ;` [download] Gave me `1-->ARRAY(0x2af07dc)<-- 2-->ARRAY(0x2ab07dc)<-- 3-->HASH(0x2b50058)<--` [download] I don't know what I would have expected for the last one (I think that's like saying `$Array[1..4]`, which surely should be written `@Array[1..4]`, but what do I know ...) Update Thanks, but tried that first, didn't work, same error. Update2 Oh wait, I missed that you removed the ( ) around @$FieldOrder also, I seem to be making progress now. Many thanks!	[reply] [d/l] [select]
Re^3: Array refs problem ... by ikegami (Patriarch) on Jun 24, 2009 at 17:44 UTC
Oh wait, I missed that you removed the ( ) around @$FieldOrder also, I seem to be making progress now. Many thanks! Only because they were distracting. They have absolutely no effect here. Just like you wouldn't use `$z=($x)+($y)` instead of `$z=$x+$y`, there's no reason to use `@a[(@$b)]` instead of `@a[@$b]`.	[reply] [d/l] [select]