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Perl

Css. R. Website. Iphone. Perl Regular Expressions. Troubleshooters.Com and Code Corner Present Copyright (C) 1998-2001 by Steve Litt Without regular expressions, Perl would be a fast development environment.

Perl Regular Expressions

Probably a little faster than VB for console apps. With the addition of regular expressions, Perl exceeds other RAD environments five to twenty-fold in the hands of an experienced practitioner, on console apps whose problem domains include parsing (and that's a heck of a lot of them). Regular expressions is a HUGE area of knowledge, bordering on an art. Regular expressions are a syntax, implemented in Perl and certain other environments, making it not only possible but easy to do some of the following: Complex string comparisons $string =~ m/sought_text/; # m before the first slash is the "match" operator.

Simple String Comparisons The most basic string comparison is $string =~ m/sought_text/; The above returns true if string $string contains substring "sought_text", false otherwise. $string =~ m/^sought_text/; . Now for some examples: Perl Hash Howto. This how-to comes with no guaratees other than the fact that these code segments were copy/pasted from code that I wrote and ran successfully.

Perl Hash Howto

Initialize a hash Assigning an empty list is the fastest way. Solution my %hash = (); Initialize a hash reference For a hash reference (aka hash_ref or href), assign a reference to an empty hash. my $hash_ref = {}; # ref will return HASH The great thing about this is that if before performing an actual assignment, you want to determine (using the ref operator) the type of thingy that a reference is pointing to, you can!... Note If you treat the variable just as any scalar variable; and use the my declaration alone, or assign a value, ref will return the empty string. my $hash_ref; # not a hash ref!... Clear (or empty) a hash If you literally want to empty the contents of a hash: for (keys %hash) { delete $hash{$_}; } Clear (or empty) a hash reference for (keys %$href) { delete $href->{$_}; } cURL - Tutorial. cURL Docs Tutorial HTTP Scripting 1.1 Background1.2 The HTTP Protocol1.3 See the Protocol1.4 See the Timing1.5 See the Response 2.1 Spec2.2 Host2.3 Port number2.4 User name and password2.5 Path part Fetch a page HTML forms 4.1 Forms explained4.2 GET4.3 POST4.4 File Upload POST4.5 Hidden Fields4.6 Figure Out What A POST Looks Like HTTP upload HTTP Authentication 6.1 Basic Authentication6.2 Other Authentication6.3 Proxy Authentication6.4 Hiding credentials More HTTP Headers.

cURL - Tutorial