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RubyInstaller for Windows

RubyInstaller for Windows
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Ruby and SciTE Daniela Robles (Guest) on 2012-11-11 20:58 Hi all, Ruby no longer comes together with SciTE, so I had to download the SciTE text editor separately. However, I find that Ruby and ScITE do not work together. Carlo E. on 2012-11-11 21:11 Subject: Ruby and SciTE Date: Mon 12 Nov 12 04:58:09AM +0900 Quoting Daniela Robles (daniela.robles15@gmail.com): > ... on 2012-11-12 00:32 Am Mon, 12 Nov 2012 04:58:09 +0900 schrieb Daniela Robles <daniela.robles15@gmail.com>: > Hi all, Hi Daniela, > Ruby no longer comes together with SciTE, so I had to download the> SciTE text editor separately. Please log in before posting.

traveling-ruby/TUTORIAL-1.md at master · phusion/traveling-ruby Introduction to Ruby Ruby is a powerful, flexible programming language you can use in web/Internet development, to process text, to create games, and as part of the popular Ruby on Rails web framework. Ruby is: High-level, meaning reading and writing Ruby is really easy—it looks a lot like regular English! This course assumes no previous knowledge of Ruby in particular or programming/computer science in general.

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Object Oriented Ruby Ruby is pure object-oriented language and everything appears to Ruby as an object. Every value in Ruby is an object, even the most primitive things: strings, numbers and even true and false. Even a class itself is an object that is an instance of the Class class. This chapter will take you through all the major functionalities related to Object Oriented Ruby. A class is used to specify the form of an object and it combines data representation and methods for manipulating that data into one neat package. Ruby class definition: When you define a class, you define a blueprint for a data type. A class definition starts with the keyword class followed by the class name and is delimited with an end. class Box code end The name must begin with a capital letter and by convention names that contain more than one word are run together with each word capitalized and no separating characters (CamelCase). Define ruby objects: box1 = Box.new box2 = Box.new The initialize method: The instance variables: #! #!

How to append text to a file with Ruby By Alvin Alexander. Last updated: Feb 21, 2013 Ruby file FAQ: How do I append text to a file in Ruby? Solution: Appending text to a file with Ruby is similar to other languages: you need to open the file in "append" mode, write your data, and then close the file. Here's a quick example that demonstrates how to append "Hello, world" to a file named myfile.out in the current directory: open('myfile.out', 'a') { |f| f.puts "Hello, world." } It's very important to note that I use f.puts in that example. Variations There are actually quite a few different ways to append data to a file. open('myfile.out', 'a') do |f| f.puts "Hello, world. And in this example I show how to append to the file using the << operator: open('myfile.out', 'a') do |f| f << "and again ... (Note the use of the \n at the end of the string when using the << operator. Writing multiple lines Finally, if you want to append more than one line at a time, here's a quick demo showing how to do this:

Ruby QuickRef Table of Contents Language General Tips These are tips I’ve given over and over and over and over… Use 2 space indent, no tabs. Use [] over Array.new. See for more. General Syntax Rules Comments start with a pound/sharp (#) character and go to EOL. Reserved Words alias and BEGIN begin break case class def defined? Types Basic types are numbers, strings, ranges, regexen, symbols, arrays, and hashes. Numbers 1231_234123.451.2e-30xffff 0b01011 0377 ? Strings In all of the %() cases below, you may use any matching characters or any single character for delimiters. %[], %!! 'no interpolation'"#{interpolation}, and backslashes\n"%q(no interpolation)%Q(interpolation and backslashes)%(interpolation and backslashes)`echo command interpretation with interpolation and backslashes`%x(echo command interpretation with interpolation and backslashes) Backslashes: Here Docs: Encodings: Waaaay too much to cover here. Symbols Internalized String. Ranges Files

class Array - Documentation for Ruby 2.0.0 ary & other_ary → new_ary click to toggle source Set Intersection — Returns a new array containing elements common to the two arrays, excluding any duplicates. The order is preserved from the original array. It compares elements using their hash and eql? methods for efficiency. [ 1, 1, 3, 5 ] & [ 1, 2, 3 ] [ 'a', 'b', 'b', 'z' ] & [ 'a', 'b', 'c' ] See also #uniq. ary * int → new_ary click to toggle source ary * str → new_string Repetition — With a String argument, equivalent to ary.join(str). Otherwise, returns a new array built by concatenating the int copies of self. ary + other_ary → new_ary click to toggle source Concatenation — Returns a new array built by concatenating the two arrays together to produce a third array. [ 1, 2, 3 ] + [ 4, 5 ] a = [ "a", "b", "c" ] a + [ "d", "e", "f" ] a See also #concat. ary - other_ary → new_ary click to toggle source Array Difference Returns a new array that is a copy of the original array, removing any items that also appear in other_ary. See also #rassoc

10 Free E-Books on Ruby for Beginners Ruby may have lost some of its shine in recent months to JavaScript and Node.js, but it's still one of the most popular programming languages out there, and it's still growing. There are a large number of beginner's Ruby resources out there, and the material is diverse. Here are a few places to get started. Hackety Hack This isn't actually an e-book, but an interactive tutorial. It was created by _why the lucky stiff, something of a legend in the Ruby scene. _why's (Poignant Guide) to Ruby Also by _why, this illustrated guide to Ruby may be totally engrossing to some readers and too outlandish for others. _why deleted the book when he exited the Internet, but there are many mirrors. Mr. Another quirky beginner's guide is Mr. Programming Ruby: The Pragmatic Programmers' Guide If you're tired of quirk and just want a big, meaty guide to Ruby check out Programming Ruby: The Pragmatic Programmers' Guide from The Pragmatic Bookshelf, frequently referred to as "Pickaxe." Learn to Program 4 More

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