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Back to Basics: Regular Expressions
Regular expressions have been around since the early days of computer science. They gained widespread adoption with the introduction of Unix. A regular expression is a notation for describing sets of character strings. They are used to identify patterns within strings. There are many useful applications of this functionality, most notably string validations, find and replace, and pulling information out of strings.

Regular expressions are just strings themselves. Each character in a regular expression can either be part of a code that makes up a pattern to search for, or it can represent a letter, character or word itself. Let’s take a look at some examples.
ruby  regex  string  reference  tip  programming 
may 2014 by rtopitt
HTML5Pattern should be a source of regularly used Inputs-Patterns.
html5  regex  padrão  input  html  reference 
april 2012 by rtopitt
Rubular: a Ruby regular expression editor and tester
Rubular is a Ruby-based regular expression editor. It's a handy way to test regular expressions as you write them. To start, enter a regular expression and a test string. Or you can try an example.
ruby  webapp  ferramenta  regex  importante  reference  programming 
november 2010 by rtopitt
txt2regex - Regular expression (regex) wizard
Txt2regex is a Regular Expression wizard that converts human sentences to regexes. In a simple interactive interface, you just answer to questions and build your own regex for a large variety of softwares and programming languages: AWK, ed, egrep, Emacs, expect, find, gawk, grep, lex, lisp, mawk, MySQL,, Perl, PHP, Postgres, Procmail, Python, SED, Tcl, VBscript, VI, Vim.
linux  shell  regex  expressão  regular  ferramenta  utilidade  console  programming 
november 2009 by rtopitt
RegExr: Online Regular Expression Testing Tool
Welcome to RegExr 0.3b, an intuitive tool for learning, writing, and testing Regular Expressions. Key features include: real time results: shows results as you type; code hinting: roll over your expression to see info on specific elements; detailed results: roll over a match to see details & view group info below; built in regex guide: double click entries to insert them into your expression; online & desktop: or download the desktop version for Mac, Windows, or Linux; save your expressions: My Saved expressions are saved locally; share and rate expressions: search Community expressions and share your own.
regex  webapp  desktop  ferramenta  flash  programming 
may 2009 by rtopitt
Randexp gem | Downtown Cartel
Randexp allows you to use regular expression to generate a random string that matches the regular expression.
gem  geração  regex  ruby  tip 
may 2009 by rtopitt
Rubular: a Ruby regular expression editor
Webapp para criar e testar expressões regulares em Ruby
expressão  regex  regular  ruby  utilidade  webapp  programming 
may 2009 by rtopitt
Rak is a grep replacement in pure Ruby. It accepts Ruby syntax regular expressions and automatically recurses directories, skipping .svn/, .cvs/, pkg/ and more things you don't care about. It is based on the Perl tool ack by Andy Lester.
busca  ferramenta  grep  linux  regex  ruby  shell 
may 2009 by rtopitt
Regex: Expressões regulares
Wiki sobre expressões regulares
regex  wiki  tip  programming 
may 2009 by rtopitt

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