Braces ({}) specifies the exact number of digits, such as \d{3} or \d{4} : grep « String « Ruby

Ruby 1.  ActiveRecord 2.  Array 3.  CGI 4.  Class 5.  Collections 6.  Database 7.  Date 8.  Design Patterns 9.  Development 10.  File Directory 11.  GUI 12.  Hash 13.  Language Basics 14.  Method 15.  Network 16.  Number 17.  Rails 18.  Range 19.  Reflection 20.  Statement 21.  String 22.  Threads 23.  Time 24.  Tk 25.  Unit Test 26.  Windows Platform 27.  XML Java Java Tutorial Java Source Code / Java Documentation Java Open Source Jar File Download Java Articles Java Products Java by API C# / C Sharp C# / CSharp Tutorial ASP.Net JavaScript DHTML JavaScript Tutorial JavaScript Reference HTML / CSS HTML CSS Reference C / ANSI-C C Tutorial C++ C++ Tutorial PHP Python SQL Server / T-SQL SQL Server / T-SQL Tutorial Oracle PL / SQL Oracle PL/SQL Tutorial PostgreSQL SQL / MySQL MySQL Tutorial VB.Net VB.Net Tutorial Flash / Flex / ActionScript VBA / Excel / Access / Word Microsoft Office PowerPoint 2007 Tutorial Microsoft Office Excel 2007 Tutorial Microsoft Office Word 2007 Tutorial

Ruby » String » grep   Braces ({}) specifies the exact number of digits, such as \d{3} or \d{4} phone = "(555)123-4567" phone.grep(/[\(\d{3}\)]?\d{3}-\d{4}/)# => ["(555)123-4567"]   Related examples in the same category 1.  Regular Expressions 2.  match the first line just by using a word in the pattern 3.  a pair of square brackets ([]) matches any character in the brackets 4.  match alternate forms of a pattern using the pipe character (|) 5.  Grouping uses parentheses to group a subexpression, like this one that contains an alternation 6.  Anchors anchor a pattern to the beginning (^) or end ($) of a line 7.  \d represents a digit; it is the same as using [0-9]. 8.  Similar to $, the shortcut \z matches the end of a string, not a line 9.  Find out the phone number 10.  ? is a repetition operator 11.  The plus sign (+) operator indicates one or more of the previous pattern

www.java2java.com | Contact Us

Copyright 2010 - 2030 Java Source and Support. All rights reserved.

All other trademarks are property of their respective owners.