Can you explain it?

[Oliver Block]

Hi,

do you have any idea, why the following construct increases the number
of element of my array of arrays @myArray with one?

if ( @#{ $myArray[$myElements] } < 0) { ...

bye,

Oliver

 

[xhoster]

Hi,

do you have any idea, why the following construct increases the number
of element of my array of arrays @myArray with one?

if ( @#{ $myArray[$myElements] } < 0) { ...

I don't know that it does do that (I couldn't replicate it), but I wonder
why you messing with a slice of the semi-special hash '%#'?

Did you perhaps mean $# rather than @#?

Are you using warnings?

Xho

 

[Tad McClellan]

Subject: Can you explain it?

Please put the subject of your article in the Subject of your article.

 

[Anno Siegel]

Hi,

do you have any idea, why the following construct increases the number
of element of my array of arrays @myArray with one?

if ( @#{ $myArray[$myElements] } < 0) { ...

What a mess. Your subject tells us nothing about your question, your
code is messed up, and your question makes an unjustified assumption.

In truth, what you do doesn't increase the number of array elements by
one, it creates a new array element in position $myElements unless
there already is one. The reason for this happening is called
"autovivification". Read about it in perlref.

Anno