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dynamic content generation Named values (variables) always designate references to objects, not the objects themselves. Ruby supports inheritance with dynamic dispatch, mixins and singleton methods (belonging to, and defined for, a single instance rather than being defined on the class). Though Ruby does not support multiple inheritance, classes can import modules as mixins. Procedural syntax is supported, but everything done in Ruby procedurally (that is, outside of the scope of a particular object) is actually done to an Object instance named 'main'. Since this class is parent to every other class, the changes become visible to all classes and objects.
dynamic content generation Ruby has been described as a multi-paradigm programming language: it allows you to program procedurally (defining functions/variables outside classes makes them part of the root, 'self' Object), with object orientation (everything is an object) or functionally (it has anonymous functions, closures, and continuations; statements all have values, and functions return the last evaluation). It has support for introspection, reflection and meta-programming, as well as support for threads. Ruby features dynamic typing, and supports parametric polymorphism.According to the Ruby FAQ, "If you like Perl, you will like Ruby and be right at home with its syntax. If you like Smalltalk, you will like Ruby and be right at home with its semantics.
dynamic content generation If you like Python, you may or may not be put off by the huge difference in design philosophy between Python and Ruby/Perl." [3] Features object-oriented four levels of variable scope: global, class, instance, and local exception handling iterators and closures (based on passing blocks of code) native, Perl-like regular expressions at the language leveloperator overloading automatic garbage collecting highly portable cooperative multi-threading on all platforms using green threads DLL/shared library dynamic loading on most platformsintrospection, reflection and meta-programming large standard library supports dependency injection continuations and generators (examples in RubyGarden: continuations and generators) Ruby currently lacks full support for Unicode, though it has partial support for UTF-8. Interaction The Ruby official distribution also includes "irb", an interactive command-line interpreter which can be used to test code quickly. A session with this interactive program might be: $ irb irb(main):001:0> "Hello, World" => "Hello, World" irb(main):002:0> 1+2 => 3 Syntax The syntax of Ruby is broadly similar to Perl and Python. Class and method definitions are signaled by keywords.
dynamic content generation
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