By the way, to be more effective in coding, it is worth choosing a source code editor with basic Ruby support (e.g. Editors and IDEsįor coding in Ruby, you can use the default editor of your operating Easily find and browse Ruby classes, modules, and methods. Also pulled from the source code using RDoc, this. Pulled straight from the source code using RDoc, this reference work documents all of the core classes and modules (like String, Array, Symbol, etc). APIdock Ruby, Rails and RSpec documentation with users’ notes. The official Ruby API documentation for different versions including the currently unreleased (trunk) version. Ruby & Rails Searchable API Docs Rails and Ruby documentation with smart searching. The one-stop web site for reference documentation about Ruby gems and StringScanner acts like a file pointer - it forwards the pointer when there is a match, thus allowing for multiple scan capabilities on the same string. Ruby C API Reference The official introduction to Ruby’s C API. Ruby Standard Library Reference Also pulled from the source code using RDoc, this reference workĭocuments the standard library. Work documents all of the core classes and modules (like String,Īrray, Symbol, etc…). Ruby Core Reference Pulled straight from the source code using RDoc, this reference The currently unreleased (trunk) version. Reference Documentation Official API Documentation The official Ruby API documentation for different versions including The Ruby Programming Wikibook A free online manual with beginner and intermediate content plus a
Pragmatic Programmers’ book is available for free online.
Manuals Programming Ruby The seminal work on Ruby in English, this first edition of the The absolute basics of Ruby all the way to OOP and web development. Learn Ruby the Hard Way A very good set of exercises with explanations that guide you from
You don’t know how to program, start here. Learn to Program A wonderful little tutorial by Chris Pine for programming newbies. Ruby Essentials A free on-line book designed to provide a conciseĪnd easy to follow guide to learning Ruby. Stiff, this guide remains a classic for Ruby learners. Why’s (Poignant) Guide to Ruby An unconventional but interesting book that will teach you Ruby The goal is to learn the Ruby language, syntax, structure, and Ruby Koans The Koans walk you along the path to enlightenment in order to learn Getting Started Official FAQ The official frequently asked questions. You can modify the string being scanned, reset or terminate the scanner, find out or change the position of the scan pointer, skip ahead, and so on. The installation guide for help on installing Ruby. You can look ahead in the string without actually scanning. There are aliases to several of the methods.Guides, tutorials, and reference material to help you learn more about Ruby Installing RubyĪlthough you can easily try Ruby in your browser, you can also read You can look ahead in the string without actually scanning. There are other methods besides the plain scanners. This is demonstrated by the example above.
will just install the pure ruby implementation of JSON. The above command will build the extensions and install them on your system.
In both cases, the scan pointer moves just beyond the last character of the match, ready to scan again from the next character onwards. Just type into the command line as root: rake install. If you use scan_until, then the match can occur anywhere after the scan pointer. When you scan for a pattern (a regular expression), the match must occur at the character after the scan pointer. For more information, please visit: /stdlib-2.6.1/libdoc/strscan/rdoc/StringScanner.html. Given the string “test string”, here are the pertinent scan pointer positions: t e s t s t r i n g Uses StringScanner (the official strscan gem).
The point of scanning is to move forward a bit at a time, so matches are sought after the scan pointer usually immediately after it. Scanning a string means remembering the position of a scan pointer, which is just an index.
Here is an example of its usage: s = StringScanner. StringScanner provides for lexical scanning operations on a String.