Join / Map Help Please 1

[1DMF]

Hi,

I'm tying to use the join and map to pipe delimiter a string from an array of hashes, I have the following but I just get an empty string?

 my $adv = join('|', map{$_->{'ID'}.','.$_->{'FirstName'}.' '.$_->{'LastName'}}@adv );

@adv has an array of hashes in it.

So i want $adv to end up with the following type value...

432,John Smith|567,Jane Doe|983,Paul Jones

What am I doing wrong?

Thanks,
1DMF

"In complete darkness we are all the same, only our knowledge and wisdom separates us, don't let your eyes deceive you."

"If a shortcut was meant to be easy, it wouldn't be a shortcut, it would be the way!"

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[rharsh]

If you're experimenting to figure out how to use map and join, great! If you're putting it in production code, you might want to consider a temporary array with a foreach loop or something similar that's easier to understand when you come back to it six months later. So here's a way to do it both ways:

my @AofH = (	{	'id' => 432, 'first' => 'John', 'last' => 'Smith' },
				{	'id' => 567, 'first' => 'Jane', 'last' => 'Doe'},
				{	'id' => 983, 'first' => 'Paul', 'last' => 'Jones'}
			);
			
my @temp;
foreach (@AofH) {
	push @temp, "$_->{id},$_->{first} $_->{last}";
}
print join('|', @temp), "\n";

or, with the map and join

print join('|', map {"$_->{id},$_->{first} $_->{last}"} @AofH), "\n";

 

[1DMF]

If you're experimenting to figure out how to use map and join, great! If you're putting it in production code, you might want to consider a temporary array with a foreach loop or something similar that's easier to understand when you come back to it six months later.

Why you say that Rharsh?

I can read your join statement perfectly well, it isn't I don't understand it , I just got the syntax wrong. I should have just double quote encapsulated the map part and allowed variable interpolation!

Got ya, many thanks!



"In complete darkness we are all the same, only our knowledge and wisdom separates us, don't let your eyes deceive you."

"If a shortcut was meant to be easy, it wouldn't be a shortcut, it would be the way!"

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