what is the ruby language ? Awnser from the ruby man page:
Ruby is an interpreted scripting language for quick and easy
object-oriented programming. It has many features to process text files
and to do system management tasks (as in Perl). It is simple,
straight-forward, and extensible.
If you want a language for easy object-oriented programming, or you
don't like the Perl ugliness, or you do like the concept of lisp, but
don't like too much parentheses, Ruby may be the language of your choice.
Ruby's features are as follows:
Ruby is a programming language well adapted for new internet businesses,
efficiently and friendly for programmers.
Ruby is an interpreted language, so you don't have to recompile
programs written in Ruby to execute them.
- Variables have no type (dynamic typing)
Variables in Ruby can contain data of any type. You don't have to
worry about variable typing. Consequently, it has a weaker compile
- No declaration needed
You can use variables in your Ruby programs without any declarations.
Variable names denote their scope, local, global, instance, etc.
- Simple syntax
Ruby has a simple syntax influenced slightly from Eiffel.
- No user-level memory management
Ruby has automatic memory management. Objects no longer referenced
from anywhere are automatically collected by the garbage collector
built into the interpreter.
- Everything is an object
Ruby is the purely object-oriented language, and was so since its
creation. Even such basic data as integers are seen as objects.
- Class, inheritance, methods
Of course, as an object-oriented language, Ruby has such basic
features like classes, inheritance, and methods.
- Singleton methods
Ruby has the ability to define methods for certain objects. For
example, you can define a press-button action for certain widget
by defining a singleton method for the button. Or, you can make up
your own prototype based object system using singleton methods, if
you want to.
- Mix-in by modules
Ruby intentionally does not have the multiple inheritance as it is
a source of confusion. Instead, Ruby has the ability to share
implementations across the inheritance tree. This is often
Ruby has iterators for loop abstraction.
In Ruby, you can objectify the procedure.
- Text processing and regular expression
Ruby has a bunch of text processing features like in Perl.
With built-in bignums, you can for example calculate factorial(400).
- Exception handling
As in Java(tm).
- Direct access to the OS
Ruby can use most UNIX system calls, often used in system programming.
- Dynamic loading
On most UNIX systems, you can load object files into the Ruby
For more on ruby, see the ruby home page
or back on on ruby host space page at Rootroute