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index - Documentation for Ruby 4. 0 Ruby Documentation Welcome to the official Ruby programming language documentation Getting Started New to Ruby? Start with our Getting Started Guide Core Classes and Modules Explore the essential classes and modules: String - Text manipulation and string utilities Symbol - Named identifiers inside the Ruby interpreter
methods - Documentation for Ruby 4. 0 Ruby programs must be written in a US-ASCII-compatible character set such as UTF-8, ISO-8859-1 etc In such character sets if the eighth bit is set it indicates an extended character
control_expressions - Documentation for Ruby 4. 0 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
class String - Documentation for Ruby 4. 0 In the simplest case, the dumped string contains the original string, enclosed in double-quotes; this example is done in irb (interactive Ruby), which uses method ‘inspect` to render the results:
class Regexp - Documentation for Ruby 4. 0 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
class File - Documentation for Ruby 4. 0 If the external encoding is 'BOM|UTF-8', 'BOM|UTF-16LE' or 'BOM|UTF16-BE', Ruby checks for a Unicode BOM in the input document to help determine the encoding For UTF-16 encodings the file open mode must be binary If the BOM is found, it is stripped and the external encoding from the BOM is used
Official Ruby FAQ Ruby is developed under Linux, and is written in fairly straightforward C It runs under Linux and other UNIX-like operating systems, macOS, Windows, DOS, BeOS, Amiga, Acorn Risc OS, and OS 2
Success Stories - Ruby Programming Language NASA Langley Research Center uses Ruby to conduct simulations A research group in Motorola uses Ruby to script a simulator, both to generate scenarios and to post process the data