By Zed A. Shaw
Do you really need to profit programming yet haven't any ability? Are you a approach administrator who desires to study Puppet or Chef? Are you a fashion designer who desires to construct your personal web pages? Are you a Ruby on Rails programmer who's ashamed that you simply don't relatively comprehend Ruby? you then may still learn this booklet. It assumes completely no earlier programming wisdom and may consultant you rigorously and slowly during the studying process.
Learn Ruby The demanding manner is a translation of the unique "Learn Python The tough Way" to instructing Ruby, with the interpretation performed through Rob Sobers. "Learn Python The challenging Way" has taught millions around the world the right way to code in Python, and this booklet makes use of an analogous confirmed procedure for Ruby. while you are performed with this e-book you might have the ability to maneuver directly to different books approximately Ruby and be able to comprehend them.
Read Online or Download Learn Ruby The Hard Way (Zed Shaw's Hard Way Series) PDF
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Additional info for Learn Ruby The Hard Way (Zed Shaw's Hard Way Series)
Functions do three things: 1. They name pieces of code the way variables name strings and numbers. 2. They take arguments the way your scripts take ARGV. 3. Using #1 and #2 they let you make your own “mini scripts” or “tiny commands”. You can create a function (also called “methods”) by using the word def in Ruby. I’m going to have you make four different functions that work like your scripts, and then show you how each one is related. ") puts_none() Let’s break down the first function, puts_two which is the most similar to what you already know from making scripts: 1.
Gets instead of plain ‘ol gets. That is because if there is stuff in ARGV, the default gets method tries to treat the first one as a file and read from that. gets explicitly. What You Should See When you run this, remember that you have to give the script your name for the ARGV arguments. rb script. I'd like to ask you a few questions. Do you like me Zed? > Yes Where do you live Zed? > America What kind of computer do you have? 0 Alright, so you said Yes about liking me. You live in America. Not sure where that is.
Here’s the list of commands I want you to remember: • close – Closes the file. Like File->Save.. in your editor. • read – Reads the contents of the file, you can assign the result to a variable. • readline – Reads just one line of a text file. • truncate – Empties the file, watch out if you care about the file. • write(stuff) – Writes stuff to the file. For now these are the important commands you need to know. Some of them take parameters, but we do not really care about that. You only need to remember that write takes a parameter of a string you want to write to the file.
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