When do variable variables change in ColdFusion components?

Question

(a) In which cases should you have var variables and (b) in which cases should you not have var scope in ColdFusion components?

Answer 1

You must var change your variables when you implement a function inside CFC that is shared by several requests (i.e. Singleton, Service CFC in the application area)

You do not need (but it is highly recommended) var to change its variables if CFC is created each time, And your method does not call another method in the same CFC that can access the vars that you defined in the caller's method. For example, a remote method that you call directly through a web service or ajax that does not call other methods that use vars that you did not use var, or a controller in CFWheels.

"You should always define functionally local variables using the var keyword." to CFC variables and doc scope http://livedocs.adobe.com/coldfusion/8/htmldocs/help.html?content=buildingComponents_29.html

Answer 2

var , , ) , , b) .

- , , " , CFC ". .:) [EDIT: ] , :

http://daveshuck.com/2006/11/28/thread-safety-example-var-scope-your-loop-index-in-coldfusion-cfcs/

, , . , , , .

Answer 3

I var scope , . , ,

Answer 4

We use all the vars in the function so that they remain local only for that function. As for the component, you can use variables or these areas to make variables available to any function in the component. The scope of this will also make the variables available directly to the caller if you set access correctly.