Ruby regex cheat sheet pdf

Essential Ruby is a combination of a cheat sheet and a tutorial. It's six pages long, but features a mini Ruby introduction and tutorial, as well as the myriad of tables you'd expect from a cheat sheet.

It's like a whole Ruby beginner's reference and tutorial in a single PDF. The only 'catch' is that you need to be a user of DZone the 'Digg for Developers' or JavaLobby to get it, but there's a very simple signup form you can fill in if you're not. I often use this one myself! A ridiculously comprehensive 'cheat sheet' created by Ryan Davis covering syntax rules, reserved words, regular expression terminology, class and method definitions, predefined variables and constants, control and logic expressions and formations, exceptions, the standard library, and a whole ton of useful stuff.

More of an extremely brief reference than a truly comprehensive cheat sheet, but still useful, especially for beginners. Not a cheat sheet, but an application gem install cheat that provides cheat sheet type reference material on your terminal from source cheat sheets!

Developed by the great guys over at Err Free. A handy guide to the formatting parameters accepted by strftime. I commonly have to look these up myself! Ruby Language Cheat Sheet We provide you with all the mostly used Ruby modules and corresponding function and feature list. You can click on the feature and see more details about the feature with example code. We hope you will enjoy the cheat sheet and developer hints very much.

Ruby has a few different types of information types; below are some examples of what defines each and how they're properly formatted. Strings: Anything within quotes are considered strings. Numbers: More commonly referred to as integers, are simply written as digits.

Booleans: Something that results in either a true or false condition. Arrays: 'Lists' of items in which each item within the brackets are elements which coorespond to specific positions beginning with '0'. In Ruby, everything is an object, in order for objects to talk to one another there are what are called 'Methods'. Methods provide action to have performed on an object to actually 'do' something in code. In Ruby, there are two central types of operators: Arithmetic and Comparison Operators.

Arithmetic operators allow mathematical equations to be performed, whereas comparison operators allow the ability to compare between two objects. String Methods:. Array Methods:. In Ruby, there are a few ways to display content to the user after a program runs. Below are some examples of how they differ:.

Welcome to this socat tutorial.