Perl Syntax Basics

Perl Syntax

Perl syntax basics:

Perl ===
Start interactive interpreter:
perl -de 1
==== Syntax Basics ====
<pre><nowiki>
data types: $scalars, @lists, and %hashes
""my"" makes a variable be in the scope of its block and lower.  Use ""our"" for globals.
Put ""use strict"" at beginning of file to be required to declare variables.
Put ""use warnings"" at beginning of file to get helpful messages?
Conditional operators: ||, &&, !, == (but you can also use and, or, not, xor
Strings: "" for interpolation, ' for raw
Concatenation: .
ternary hook: a?b:c
Importing:
use Module; --brings in entire namespace
use Module (symbol1, symbol2, symbol3);
require Module;
Module::func();


Magical entities:
$_ means ??
@_ This is where function arguments are stored.
@ARGV command line arguments
$ARGV Name of current file?
$$ Process ID
$< user id
There are many more, just look up anything suspicious I guess.