Adobe Flex Combo box Binding Bug

I was working on one project at 2nd Byte and hit this problem of Combo Box's data provider not being updated intermittently.

I came across one post which described the bug in SDK 3.5 (it was in previous SDK's as well.

I was doing like this:
[Bindable] public var comboDP:ArrayCollection;

myComboBox.dataProvider = comboDP;

and this wasn't getting updated values and had to do like this to get this working:

myComboBox.dropdown.dataProvider = comboDP;


Link to the post

Enjoy

Yahoo rejects emails

My Friend Anuj hit a problem of his clients emails not being delivered to Yahoo users. and I found few links which could be a help if you hit the same problem.

Link 1

Link 2

Link 3

Link 4

DomainKeys

This looks like a Marathon or Herculean task to sort this thing out.

I thought putting it here might help someone or me at some point.

SQL makes decision for you - strange

I ran into a strange MSSQL behaviour.

I wanted to do some calculation and output it in my application like this:

Declare @aFlaot float

set @aFlaot = 3*1/2

select @aFlaot aFlaot

From above I was expecting a float value as I was storing it in a float type variable but it was returning 1 ( as an integer)

And when I tried following I got back right value with correct decimals

Ex 1)

set @aFlaot = 3*1.0/2

select @aFlaot aFlaot

Returned 1.5 (as expected)

Ex 2)

declare @aVal float
set @aVal = 1

set @aFlaot = 3*@aVal/2

select @aFlaot aFlaot

Returned 1.5 (as expected)

What I understand is SQL decides on the basis of values you are using in your calculation not the container type you are using.

Few links to get going on Ajax or Flex - Swiz

Flex framework - Swiz
http://www.briankotek.com/blog/index.cfm/2009/1/8/Using-Swiz-Part-1-Initial-Setup

JasonLint Validator
http://www.jsonlint.com/

Coldfusion transaction error

I came across very weird error from one of my cold fusion cfc page, which has quite a lengthy cftransaction in it with quite a lot insert queries and the error was:
Branch target offset too large for short

I had to split the code in 2 pages and moved transactions in and include page though I am against having an include page in cfc but for time being wanted this code to work, found an article related to this problem here:
Branch offset error

I am very amazed that this error is in Cold fusion from CF7 and CF9 still throws the same error.

I will try to ask the solutions from ColdFusion Gurus.

Finding file extension in SQL

Here is the SQL code to find the extension of a file:

declare @appurl varchar(50)
set @appurl= reverse('philip.singh.bedi.doc')

select reverse(LEFT(@appurl, CHARINDEX('.', @appurl) - 1)) ext,
reverse(RIGHT(@appurl, LEN(@appurl) - CHARINDEX('.', @appurl))) fname

Few Handy Javascript functions for HTML forms

Here are few handy javascript function, which I use on day today basis in my Web development:

// Returns string after trimming spaces from both sides
function AllTrim(str)
{
str = LTrim(str);
str = RTrim(str);
return str;
}
//Returns string after trimming spaces from left side
function LTrim(str)
{
return str.replace(/^\s+/g,'');
}
//Returns string after trimming spaces from right side
function RTrim(str)
{
return str.replace(/\s+$/g,'');
}
// validates email form field, if you pass true, it checks for empty field as well
function checkEmail(str, required)
{
regexPattern = /^[a-zA-Z_0-9-]+(\.[a-zA-Z_0-9-]+)*@([a-zA-Z_0-9-]+\.)+[a-zA-Z]{2,7}$/;
str = AllTrim(str);
if (required == 'undefined' || required )
{
if( str.length == 0 )
{
return false;
}
}
else
{
if( str.length == 0 )
{
return true;
}
}
return regexPattern.test(str);
}
// returns selected radio button value from a group of radio buttons in a form
function getSelectedRadioValue(formObj, obj)
{
var selected_radio_val = '';
for (var i=0; i < document[formObj][obj].length; i++)
{
if (document[formObj][obj][i].checked)
{
selected_radio_val = document[formObj][obj][i].value;
break;
}
}
return selected_radio_val;
}