Simple one

mecrazycoder has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks, Whats the difference between

   my $root=@_;
    
   my ($root)=@_;
[download]

. I know both are different but i want to know what does it mean. Thanks

Comment on Simple one Download Code

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Re: Simple one by Taulmarill (Deacon) on Aug 20, 2009 at 12:47 UTC
One difference is about context. The first line sets @_ in scalar context, which makes Arrays give back the number of their elements. The second line sets the Array in list context, because `$root` now is in a list. The fact that the list has only one element does not concern `@_`. In list context, Arrays return all their elements. Since the list has only one element, only the first element of the array is stored.	[reply]
Re: Simple one by BioLion (Curate) on Aug 20, 2009 at 12:47 UTC
I guess you want to know about context? Discussion here and info here. Just a something something...	[reply]
Re: Simple one (sassign vs aassign) by ikegami (Patriarch) on Aug 20, 2009 at 15:54 UTC
See Mini-Tutorial: Scalar vs List Assignment Operator. No one mentioned the second difference.	[reply]
Re: Simple one by mecrazycoder (Sexton) on Aug 20, 2009 at 12:53 UTC
Thanks a lot dude	[reply]
Re: Simple one by Anonymous Monk on Aug 21, 2009 at 09:24 UTC
hi my $root=@_; my ($root)=@_; In the first case it will store the length of an array. In the second case it will store the first element of the array.	[reply]