Filtering an XMLListCollection using Regular Expressions

By Peter deHaan On April 1, 2009 · 3 Comments

The following example shows how you can filter an XMLListCollection collection by using regular expressions in Flex 4.

Full code after the jump.

 

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Replacing carriage returns and line feeds with newline characters using Regular Expressions

By Peter deHaan On December 16, 2008 · 8 Comments

The following example shows how you can use Regular Expressions to globally replace carriage returns and line feeds with the newline character (“\n”) in a string using Flex.

Full code after the jump.

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Checking if a character is whitespace using the Flex StringUtil class’s isWhitespace() method

By Peter deHaan On September 8, 2007 · Leave a Comment

The following example shows how you can check whether a character is a whitespace character by using the isWhitespace() method in the mx.utils.StringUtil class. And just for giggles, I also show how you can do the same thing using regular expressions (RegExp) with POSIX character classes.

Full code after the jump.

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Validating data using Regular Expressions

By Peter deHaan On August 22, 2007 · 10 Comments

It looks like I forgot to post this and I’ve had this as a draft for a week. I was looking at creating a regular expression for validating a UPS tracking number and/or InfoNotice number and decided to do a quick RegExp for validating a Canadian postal code instead. Fear not, my 3 loyal readers, [...]

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Using named groups with Regular Expressions

By Peter deHaan On August 22, 2007 · Leave a Comment

This is always a neat trick that I seem to always forget about, so I thought I’d post it here. When working with Regular Expressions, the RegExp class supports named groups. So instead of having to go through the RegExp result and access it like an array ([1], [2] .. [n]), you can use named [...]

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Filtering an XMLListCollection using the filterFunction property and regular expressions

By Peter deHaan On August 4, 2007 · 20 Comments

Here is another handy little tip that you see all over the web, how do I filter a data grid (or other list-based control) based on a user’s input? Or more specificially, how to I limit the items that show in a list based on what a user types.

Since I already created a simple [...]

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