Ruby

This is the beginning of my Ruby Tutorial. Either read this, or head over to the Programming Exercises and start solving them using Ruby.

• Getting started with Ruby (print, puts, comments, arithmetic, strings, length, reverse)

• Variables and variable interpolation in Ruby

• Arrays in Ruby

• For loop in Ruby (iterating over array elements)

• Range in Ruby (.. and ...)

• ARGV - the command line arguments of a Ruby program

• Open file and read content in Ruby

• Download an HTML page using Ruby (Fetch a URL)

• Basic data structures in Ruby (Scalar, Array, Hash)

• Reading CSV file in Ruby

• Iterate over characters of a string in Ruby (split, each_char)

• Analyze Apache log file - count localhost in Ruby

• Pretty printing complex data structures in Ruby - like Data::Dumper in Perl

• The 14 most important Ruby Resources

• Sum of numbers in a file implemented in Ruby

• Number guessing game in Ruby

• How to convert a string to UPPERCASE or lowercase in Ruby?

• Count web server hits using Ruby

• split in Ruby

• The conditional operator in Ruby

• Convert String to Number in Ruby

• Count digits in Ruby

• Hello World using CGI in Ruby

• Ruby ENV

• How to write to a file in Ruby

• Logical operators in Ruby (and, or, not), (&&, ||, !)