Re^6: Using an array element as a loop iterator

http://www.perlmonks.org?node_id=1061748

in reply to Re^5: Using an array element as a loop iterator
in thread Using an array element as a loop iterator

> but that's kind of ugly.

maybe easier written with while loops?

while ($a[0] =shift @a1) { ... }

... well at least for me better readable :)

Cheers Rolf

( addicted to the Perl Programming Language)

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Re^7: Using an array element as a loop iterator by Eily (Monsignor) on Nov 08, 2013 at 20:14 UTC
It surely is ^^. The problem is that you can't use that construct like this: while( $a[0] = shift `cat file` ) (but that is a unusual way to read a file, indeed). So you do have to set @a1 first, which is the first part of my for loop. And if @a1 contains a value that is false, `$a[0] = shift @a1` will be false as well, so the loop will stop early. `defined($a[0] = shit @a1)` would work, unless you want to use undef as a value. That's why I used @a1 in scalar context as the third part of the for loop.	[reply] [d/l] [select]
Re^8: Using an array element as a loop iterator by LanX (Saint) on Nov 08, 2013 at 20:19 UTC
agreed! ++ =) Cheers Rolf ( addicted to the Perl Programming Language)	[reply]
Re^7: Using an array element as a loop iterator by gurpreetsingh13 (Scribe) on Nov 09, 2013 at 08:59 UTC
Thanks a lot. Got the point.	[reply]

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