Hi,

I need to retrieve value from a hash variable, corresponding to the input. This is how the code goes..

print "Message ID:";

$input = <STDIN>;

for($i=0; $i< $total_msg; $i++){

if ($input == $msg{$i}{msg_id}) {

$msg_body = $msg{$i}{message_body};

last;

}

}

With the above code, instead of printing just one message body corresponding to the input message id, it gives me the body of all the messages stored in hash.

Could anyone please tell me how to fix the following code?

Thank you,

Priya.

It doesn't print anything

You also have a "last;" in there which would prevent the loop carrying on if a match was found.

Your data structure looks like a hash of hashrefs which is like:


....so I'm not sure how it can be returning all body data as in order to do that you'd have to loop the hashrefs or append them somehow.

Maybe you should provide some more details to see if it clears things up.

$msg->{$i}->{Name}



Cheers

Andy (mod)
andy@ultranerds.co.uk

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Thats the same as:

$msg{$i}{msg_body}

hi,

thank you for your reply.

the data structure is like this --

---

%msg = (

$total_msg[0] => {

msg_id = a@ab.com

msg_body = "Howdy!"

},

$total_msg[1] => {

msg_id = b@cd.com

msg_body = "Hello"

}

);

---

Upon taking a message_id as input, I need to retrieve the corresponding message_body.

Could you tell me how I should do it?

Thanks,

Priya.

Pretty much like you already have it.

i doesnt work yet!

It does, so either I misunderstood what you need or you are missing something :)

Would using "ARGV" solve the purpose?

Priya

I don't know, because I'm still not clear on what you are trying to do.