Recent Snippets

Rails Session Timeout

Thu, 28 May 2009 12:38:36 +0000

Rails Underscore and Classify

Mon, 27 Apr 2009 19:50:49 +0000

These are two Rails helpers that could be very useful when injecting new instance methods in a class. underscore and classify

Simple Daemon

Thu, 23 Apr 2009 15:25:45 +0000

prueba

Mon, 16 Feb 2009 03:24:32 +0000

Delete blank lines from file

Wed, 07 Jan 2009 09:32:18 +0000

Ways to delete blank lines (in vi,using sed,awk,grep)

Google Calendar IFrame Embed

Fri, 18 Jul 2008 22:21:01 +0000

Code to embed a Google Calendar in any page. Replace "GOOGLE_EMAIL_ADDRESS" in the src attribute with the chosen user. Because this is an iframe, there's no need to fork over your password to the party doing the embedding.

Ruby strftime Options for Date Formatting

Wed, 30 Jan 2008 18:51:59 +0000

Ruby uses the same strftime options as PHP.
Us as so:
irb: order.shipped_at.strftime("%Y-%m-%d %I:%M")
=> 2006-03-13 02:55

Variables and Constants Cheat-Sheet for Ruby

Thu, 29 Nov 2007 18:11:59 +0000

A listing of built-in variable types, pre-defined variables, and constants available in Ruby.

Files Cheat-Sheet for Ruby

Thu, 29 Nov 2007 18:06:59 +0000

Common File methods and modes.

Strings Cheat-Sheet for Ruby

Thu, 29 Nov 2007 18:02:59 +0000

In all of the %() cases below, you may use any matching characters or any single character for delimiters. %[], %!!, %@@, etc.

Ranges Cheat Sheet for Ruby

Thu, 29 Nov 2007 17:57:28 +0000

Range [www.ruby-doc.org] cheat-sheet for Ruby.

Regular Expression Cheat-Sheet for Ruby

Wed, 28 Nov 2007 22:23:53 +0000

Regular expression cheat-sheet for Ruby.

Search an IMAP Server With Multiple Fields

Wed, 28 Nov 2007 17:53:21 +0000

Here is a Ruby program that I use to search my IMAP mailbox with combinations of search criteria. It is a mixture of several different Ruby-based approaches I found on the Internet for searching email systems.

Note that you don't need all the comments at the front as I've shown. It's just that I can't remember all the crazy flags that can be used, and at this time I'm not going to take the time to write a better mail system interface, although IMHO a better interface is surely needed.

Without any further ado, here is my Ruby source code that lets you search your email with powerful options/combinations:

Connect to SSL Email and Download Attachments

Tue, 27 Nov 2007 22:56:26 +0000

Make content encoding adjustments as necessary... I always assume base64 encoding - can decode others using string's unpack method. To use the enable_ssl method, you will need to use the most recent net/pop Ruby version in trunk http://svn.ruby-lang.org/repos/ruby/trunk/lib/net/pop.rb [svn.ruby-lang.org]... just copy it to your current project's lib.

Get file content encoded in base 64

Wed, 14 Nov 2007 19:16:38 +0000

Simple PHP script to help you convert your files to either base64 or percent encoded strings. Presumably for use in Data URIs, or otherwise embedding image data directly in another file/format.

Draggable Windows in Firefox

Tue, 13 Nov 2007 21:21:47 +0000

To make a window draggable by clicking on the window's contents, you can use the mousedown and mousemove events. The following code does not care which element is clicked on, simply responding to all mousedown events equally. You could improve this code by checking the event.target element and only setting the startPos if the element matches some criteria.

Opening New Browser Windows in Firefox

Tue, 13 Nov 2007 21:19:41 +0000

To open a new browser window, you can simply use window.open(). However, window.open() returns a Window object for content, not for the browser window itself, so you should get the chrome Window first. The simplest way to do that is to use nsIWindowMediator [developer.mozilla.org].

Validate IP Address

Sat, 10 Nov 2007 03:11:46 +0000

Email Address Validation

Sat, 10 Nov 2007 03:11:03 +0000

Validate an email address

Telephone Number Validation

Sat, 10 Nov 2007 03:07:48 +0000

Telephone Numbers - A much more interesting example would be matching telephone numbers (US/Canada.) We'll be expecting the number to be in the following form: (###)###-####

Again, whether the phone number is typed like (###) ###-####, or ###-###-#### it will validate successfully. There is also a little more leeway than specifically checking for enough numbers, because the groups of numbers can have or not have parenthesis, and be separated by a dash, period, or space.

Username Validation

Sat, 10 Nov 2007 03:05:58 +0000

Something often overlooked, but simple to write with regex would be username validation. For example, we may want our usernames to be between 4 and 28 characters in length, alpha-numeric, and allow underscores.

Capturing XML Output with Apache Axis

Fri, 09 Nov 2007 20:37:24 +0000

Save this file as client-config.wsdd in the working directory of your Apache Axis Java client. Axis will load it automatically. The configuration here tells Axis to save all incoming and outgoing XML into a file named axis.log.

Handle Special Characters in Site

Thu, 08 Nov 2007 21:02:18 +0000

Configure your ide to use the correct encoding. With eclipse, add -Dfile.encoding=ISO-8859-1 in eclipse.ini file.

To configure the file encoding used by mvn, add to MAVEN_OPTS the encoding (same as the ide). This can be made with adding MAVEN_OPTS="-Dfile.encoding=ISO-8859-1" in $HOME/.profile.

Finally, configure the output encoding in your pom:

The Maven XSD Schemas

Thu, 08 Nov 2007 20:54:39 +0000

The following are the Maven pom and settings XSD information.

Include tools.jar in Maven Dependencies

Thu, 08 Nov 2007 20:52:33 +0000

The following code includes tools.jar on Sun JDKs (it is already included in the runtime for Mac OS X and some free JDKs). It adds it via a profile so compilation is less likely to break using other JDKs.

Compile With a Specific JVM Version in Maven

Thu, 08 Nov 2007 20:47:29 +0000

You must configure the source and target parameters in your pom, by default this is version 1.3. For example, to set the source and target JVM to 1.5, you should have in your pom.

Determine Current Plugin Version in Maven

Thu, 08 Nov 2007 20:41:05 +0000

You can use the Maven Help Plugin's describe goal. Note that you must give the plugin prefix as the argument to plugin, not it's artifact ID. For example, to find out the version of the install plugin.

MySQL Mass Text/String Replace

Thu, 08 Nov 2007 18:11:45 +0000

MySQL Mass Text/String Replace

File Spacing and Numbering With sed

Wed, 07 Nov 2007 13:13:11 +0000

Text Conversion With sed

Wed, 07 Nov 2007 13:10:39 +0000

A list of one-liners that convert lines in a text file.

Selective Deletion of Certain Lines With sed

Wed, 07 Nov 2007 13:06:09 +0000

A list of one-liners that selectively delete certain lines.

Selective Printing of Certain Lines With sed

Wed, 07 Nov 2007 13:04:37 +0000

A list of one-liners that selectively print out certain lines.

Emulating Unix Commands With sed

Wed, 07 Nov 2007 13:00:53 +0000

Here are a list of one-liners that simulat other unix commands, such as head or grep. Useful insomuch as it is more flexible.

Search-And-Replace With sed

Mon, 05 Nov 2007 23:36:04 +0000

Simple Daily MySQL Backup Script

Mon, 05 Nov 2007 19:16:07 +0000

Pretty URLs in Rails

Thu, 01 Nov 2007 22:58:47 +0000

Rather than ugly urls like http://snipsnipe.com/snip/view/13 [snipsnipe.com], use the following hack to make more meaningful urls like http://snipsnipe.com/snip/view/13-pretty-urls-in-rails [snipsnipe.com].

Scoping Common ActiveRecord Parameters in Rails

Thu, 01 Nov 2007 20:55:48 +0000

with_scope lets you bind a block of code operating on an active record model to a particular subset of that model’s collection. For instance, using the standard blog application example, if I have a controller method that performs a series of operations on a single user’s articles I would need to pass in the user id condition on every operation. with_scope lets us extract that parameter.

Mucking with Tables in Ruby and Rails

Thu, 01 Nov 2007 18:46:53 +0000

Ruby Object Sniping

Thu, 01 Nov 2007 16:57:35 +0000

Time Selects Are Fun With Ruby

Thu, 01 Nov 2007 16:39:39 +0000

Easy Ruby Object Sorting

Thu, 01 Nov 2007 16:28:29 +0000

Open a Centered New Window in JavaScript

Wed, 31 Oct 2007 17:38:44 +0000

Colloquy Command Extension in Javascript

Tue, 23 Oct 2007 05:07:51 +0000

Maven Repository Management via Settings

Fri, 19 Oct 2007 17:00:50 +0000

Manage Ruby Gems from MediaWiki

Fri, 19 Oct 2007 16:24:48 +0000

Google Suggest Autocompleter

Tue, 09 Oct 2007 16:54:15 +0000

Simple Ruby Loops

Tue, 09 Oct 2007 06:51:01 +0000