How to use array values as key in hash ?

Question

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@func is an array containg names. I want to assign values to each name as below, but it does seem to work.

PERL

for ($i=0;$i<10; $i++)
{
	$hash{'$func[$i]'}= $i;
	
}
print $hash{'$func[0]'};

I get an error as below:

Use of uninitialized value in print at D:/eclipse/workspace/Pgm1.pl line 47, <FILE1> line 57.

Please help.

Thanks in advance.

Posted 15-Aug-12 21:26pm

Faez Shingeri

Updated 15-Aug-12 22:35pm

v3

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Comments

Sergey Alexandrovich Kryukov 16-Aug-12 4:19am

What's wrong? Perl, of course. But if you disagree, I don't want to argue... :-)
--SA

Sergey Alexandrovich Kryukov 16-Aug-12 12:56pm

Faez, I don't understand why did you remove your nice comment in response to my comment. There was nothing inappropriate in your words...
And I meant that I don't consider that the Perl as a language and technology is worth dealing with, but don't want to argue against Perl proponents, that's it.
--SA

Faez Shingeri 17-Aug-12 5:42am

My bad! :( I thought my comment had a little sarcastic flavour in it and others too might feel the same. I didn't mean to offend you in any way.
Then I was lazy to type again :p

Your Nice! :)

Sergey Alexandrovich Kryukov 17-Aug-12 10:53am

This is what I say: when I saw your comment, I did not found anything offending or inappropriate in any way. It was perfectly appropriate; don't be so shy. And by the way, there is nothing wrong in a sarcastic saying; it can be offending but it can also be perfectly correct. Of course, there are many fools who get offense of anything, so what?.. :-)

Cheers,
--SA

Faez Shingeri 22-Aug-12 0:37am

My smile has reached my eyes when reading your reply.. :))
"so what?.." -- Haha...:-D Ok! Sir Sergey Alexandrovich! I shall definitely not let this happen again...!

Great learning from you, if not Perl :)

Cheers,
Faez

Sergey Alexandrovich Kryukov 22-Aug-12 0:51am

Too bad I'm not helpful at Perl. Good luck, nice talking... :-)
--SA

2 solutions

Solution 1

Though i am not familiar with Perl,but i can ask you,Do you initialize your $hash{} function before your code you have given here?If you not,then this is the cause of error.

Posted 15-Aug-12 21:46pm

ridoy

Comments

Faez Shingeri 16-Aug-12 4:24am

Oh Yes, I have defined the hash earlier in the program.
my %hash;

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Faez Shingeri · Accepted Answer · 2012-08-15T22:51:00

Solution 2

This solved my issue :-D

PERL

for ($i=0;$i<10; $i++)
{
	@hash {$func[$i]} = $i;	
}
print $hash{$func[0]};

Posted 15-Aug-12 22:51pm

Faez Shingeri

How to use array values as key in hash ?

2 solutions

Solution 2

Solution 1

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How to use array values as key in hash ?

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