antoniolorusso.com » Perl

map and grep: from Perl to PHP

antonio lorusso — Mon, 17 May 2010 14:57:29 +0000

Probably many of you already know but here is the correspondent in PHP of the two fundamentals Perl functions:
map => array_map grep => array_filter
Too lazy to give you examples .. I think you can work it out yourself.

in_array() in Perl?

antonio lorusso — Wed, 09 Jul 2008 09:57:51 +0000

I was looking for this useful function I always use in php and found this simple article.
Basically, the function that permit you to do that is grep used in this way:
my $string = ‘fin_helm’; my @array = qw/full_plate manteau boots two_handed_sword fin_helm/; if(grep $_ eq $string, @array) { print “$string is in the array”; }
easy?

just a note for me: Perl references

antonio lorusso — Tue, 08 Jul 2008 16:32:46 +0000

I said not to jump the chapter 4 of the Camel book (the Dromedary one) otherwise you’ll not know what @{…} (literally: at plus curly brackets) do!!
As explained in page 252, that expression, dereferenciate an array reference returning the array itself.
Remember that arghh..

ps. why Perl should be so complicated?

Perl reference

antonio lorusso — Fri, 30 May 2008 16:19:24 +0000

Study it! if you are beginning with perl, that chapter is the one you will never jump over!
http://perldoc.perl.org/perlreftut.html