Perl

Hello World in Perl

Perl has been printing “Hello, World!” since 1987. As a language designed for practical text manipulation, outputting text is as simple as it gets.

The Code

Create a file named hello.pl: …

Variables and Types in Perl

Perl’s approach to variables is unique among programming languages. Instead of declaring a type, you prefix each variable with a sigil—a symbol that tells Perl (and you) what kind of data …

Operators in Perl

Operators are the building blocks of every expression you’ll write in Perl. Because Perl is dynamically typed with weak conversions between numbers and strings, it takes a route no other …

Control Flow in Perl

Control flow determines the order in which your program’s statements run. Perl gives you the familiar if/elsif/else conditionals and while/for loops you’d expect, but it also adds its own …