Wild, it looks like it's going to custom tags by reference, but UDFs
by value. Here's a test I wrote:
<!--- Index.cfm --->
<cfset myArray = arrayNew(1) />
<cfset myArray[1] = "unchanged" />
<cffunction name="arrayTest" returntype="array">
<cfargument name="array" type="array" required="true" />
<cfset arguments.array[1] = "changed" />
<cfreturn arguments.array />
</cffunction>
<cfset newArray = arrayTest(myArray) />
<cfoutput>
If arrays went to UDFs by reference, this would read "changed":
#myArray[1]#
<br />
</cfoutput>
<cfmodule template="module.cfm" array="#myArray#" />
<cfoutput>
If arrays went to modules/tags by reference, this would read "changed":
#myArray[1]#
</cfoutput>
<!--- Module.cfm --->
<cfif thistag.executionmode eq "start">
<cfset attributes.array[1] = "changed" />
</cfif>
-Joe
On 12/14/05, James Reily <[EMAIL PROTECTED]> wrote:
> CF documentation states the following:
>
> "When you pass a variable to a CFML custom tag as an attribute,
> or to a user-defined function as an argument, the following rules
> determine whether the custom tag or function receives its own
> private copy of the variable or only gets a reference to the
> calling page's variable:
>
> * Simple variables and arrays are passed as copies of the data.
> If your argument is an expression that contains multiple simple
> variables, the result of the expression evaluation is copied to
> the function or tag.
> * Structures, queries, and cfobject objects are passed as
> references to the object."
>
> HOWEVER, when I pass an array to a custom tag (.cfm), change its contents in
> that tag, and then return to the calling tag, the array in the calling tag
> contains the altered value. Is this a bug? Or is the documentation old and
> you can now pass arrays by value?
>
> Example:
>
> <cfset VARIABLES.array1 = ArrayNew(1)>
> <cfset ArrayAppend(VARIABLES.array1, "Original1")>
> <cfset ArrayAppend(VARIABLES.array1, "Original2")>
>
> <cfmodule template="Test.cfm"
> SomeArray="#VARIABLES.array1#">
>
> <cfoutput>#VARIABLES.array1[1]#> <!--- This shows "ALTERED". Are CF docs
> wrong?--->
> <cfoutput>#VARIABLES.array1[2]#> <!--- This shows "Original2" --->
>
>
> --------------------------------------------------------------------------------------
> Test.cfm:
> --------------------------------------------------------------------------------------
>
> <cfset ATTRIBUTES.SomeArray[1] = "ALTERED">
>
>
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