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List:       perl-beginners
Subject:    =?gb2312?B?tPC4tDogdGhlIHdheSB0byBnZXQgY3VycmVudCBpbmRleCBvZiBhbiBhcnI=?=
From:       <zhao_bingfeng () topsec ! com ! cn>
Date:       2006-03-01 1:09:28
Message-ID: 013001c63ccc$ccdd2dc0$835fa8c0 () zhaobingfeng
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> -----ÓʼþÔ­¼þ-----
> ·¢¼þÈË: JupiterHost.Net [mailto:mlists@jupiterhost.net] 
> ·¢ËÍʱ¼ä: 2006Äê2Ô 28ÈÕ 21:54
> ÊÕ¼þÈË: beginners@perl.org
> Ö÷Ìâ: Re: the way to get current index of an array
> 
> 
> 
> zhao_bingfeng@topsec.com.cn wrote:
> > hi, perlers,
> 
> Howdy,
Thanks or your and others reply

> 
> > Is there a simple way to get the current index of an array in loop
> 
> yes
> 
> > statement? the procondition is you cannot get this information from 
> > array element. For example
> >  
> > #!usr/bin/perl
> > my @arr = qw/a b c d e/;
> > for(@arr)
> > {
> >     print "The No.?? element is $_\n"; }
> 
> for my $idx (0 .. $#arr) {
>     print "The no $idx element is $arr{$_}\n"; }
> 
> my $idx = 0;
> for my $item(@arr) {
>     print "The no $idx element is $item\n";
>     $idx++;
> }
That's great! but in another you cannot touched context, what can we do? these
is no $ prefixed magic indicated this, but maybe some other corners keep this
info?


> 
> There are other more magical ways but those will probably be 
> best for you :)
> 
> The first way not only has less code but is faster.
> 
> HTH :)
> 
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> 
> 

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