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The koans walk you along the path to enlightenment in order to learn ruby Ruby is developed under linux, and is written in fairly straightforward c The goal is to learn the ruby language, syntax, structure, and some common functions and libraries.
Ruby documentation welcome to the official ruby programming language documentation You can use empty?, compare the string to , or compare the string’s size or length to 0 to find out if a string is empty. Getting started new to ruby
Start with our getting started guide
Core classes and modules explore the essential classes and modules In such character sets if the eighth bit is set it indicates an extended character. Ruby’s grammar differentiates between statements and expressions All expressions are statements (an expression is a type of statement), but not all statements are expressions.
Identical regexp can or cannot run in linear time depending on your ruby binary Neither forward nor backward compatibility is guaranteed about the return value of this method. Ruby was first developed by matz (yukihiro matsumoto) in 1993, and is now developed as open source It runs on multiple platforms and is used all over the world especially for web development.
This example is done in irb (interactive ruby), which uses method ‘inspect` to render the results:
In ruby, only nil and false are false in conditional contexts
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