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Please comment if you know some more good ones.

Perl Basics

Perl Data Types

• Scalar -> $variable
• Array -> @array
• Associative Array (hash) -> %hash
• Combinations to make complex types easily (looks confusing but very powerful)
• Array of hashes $array[$i]->{$key}
• Hash of hashes $hash{$key}{$var}
• Multi-dimensional $var->{$key}->[0]->{$thing}

Use it!

use strict;

Perl if statement

 use strict;
 my $string = "this is a string";
 if ( $string eq "string" ) {
 print "$string is the same as \"string\"\n";
 }
 elsif ( $string =~ /string/ ) {
 print "regex match $string has \"string\" in it\n";
 }
 elsif ( $string == 100 ) {
 print "$string is the number 100\n";
 }
 else {
 print "Else Nothing\n";
 }