How do you delete a structure from an array?

I have an array that contains structures, and I want to delete one based on a URL variable. Let's say my array looks like the following:

ThisIsMy - Array
1. ThisIsMy - Structure: firstname, Bob; lastname: Jones; age: 30
2. ThisIsMy - Structure: firstname, Jane; lastname: Doe; age: 23
3. ThisIsMy - Structure: firstname, Sally; lastname: Smith; age: 28

I realize this has to be CF 101 stuff, but how in the world can I delete, say, the second structure in the array if I have delete=2 as a URL variable? All the code I've tried has resulted in a "complex object types cannot be converted to simple values" error or the dreaded "object of type class java.lang.Boolean cannot be used as an array."
SiobhanElaraAsked:
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js_vaughanCommented:
ArrayDeleteAt() ...

So if this is your array before-hand :

ThisIsMy[1].Firstname = Bob
ThisIsMy[1].LastName = Jones
ThisIsMy[1].Age = 30
ThisIsMy[2].Firstname = Jane
ThisIsMy[2].LastName = Doe
ThisIsMy[2].Age = 23
ThisIsMy[3].Firstname = Sally
ThisIsMy[3].LastName = Smith
ThisIsMy[3].Age = 28

... and you do <cfset ArrayDeleteAt(2)>
Then this is your result :

ThisIsMy[1].Firstname = Bob
ThisIsMy[1].LastName = Jones
ThisIsMy[1].Age = 30
ThisIsMy[2].Firstname = Sally
ThisIsMy[2].LastName = Smith
ThisIsMy[2].Age = 28
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gdemariaCommented:
It doesn't sound like you want to delete the structure of the array, it sounds like you want to delete the array element itself.

If your example, if you pass in delete=2, then you want to delete Jane Doe age 23, the entire element of the array.

To do that, use :   <cfset tmp =  arrayDeleteAt(thisIsMy,2)>

where thisIsMy is the array as you have indicated.

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js_vaughanCommented:
Whoops, i forgot to put the array name in there.

gdemaria is correct!
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PluckaCommented:
Just incase you want to remove the structure and not delete the array element, you can just do this

<cfset ThisIsMy = [] />

<cfset s1 = {firstName = 'Fred', lastName = 'Flintstone'} />
<cfset s2 = {firstName = 'Fred', lastName = 'Flintstone'} />
<cfset s3 = {firstName = 'Fred', lastName = 'Flintstone'} />

<cfset arrayAppend(ThisIsMy, s1) />
<cfset arrayAppend(ThisIsMy, s2) />
<cfset arrayAppend(ThisIsMy, s3) />

<cfset ThisIsMy[2] = "" />

<cfdump var="#ThisIsMy#" />
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