Re: List or Scalar?

Ummm, if $term has the right value in it, why did you say

  for( -5..@{$term} ) {
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Why not just

  for( -5..$term ) {
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I think you got carried away with the specialized idiom of how to force values to be interpolated within strings, such as you used in

  print "\$term is @{$term}\n";
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But even here you could have just said

  print "\$term is $term\n";
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The value @{$term} is evaluating to an undefined value, which is somehow getting converted into a value of zero. If I say

  for( -5..undef ) {
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directly I get nasty warnings "Use of uninitialized value in foreach loop entry at hagen.pl line 36." Also if I use a variable with an undef value.

Why so?

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Re: Re: List or Scalar? by hagen (Friar) on Aug 27, 2003 at 08:20 UTC
Thanks shenme... in the actual program the value is in a reference (as returned by the Win32::OLE module) - and is deref'ed (as I understand it) by the @{$term} syntax - it's come from a (ref to an) array of refs. What makes me think that this is correct is that the `print "\$term is @{$term}\n"` prints the value I want. However when I use the same @{$term} syntax in the range operator it doesn't seem to deref correctly - or I'm making some other sort of mistake.	[reply] [d/l]

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Re: Re: List or Scalar?
by hagen (Friar) on Aug 27, 2003 at 08:20 UTC

Thanks shenme... in the actual program the value is in a reference (as returned by the Win32::OLE module) - and is deref'ed (as I understand it) by the @{$term} syntax - it's come from a (ref to an) array of refs.

What makes me think that this is correct is that the

print "\$term is @{$term}\n"

prints the value I want. However when I use the same @{$term} syntax in the range operator it doesn't seem to deref correctly - or I'm making some other sort of mistake.

[reply]
[d/l]