Hey Terry,
That's not quite how reference types work...trust me, it's passed by
reference.
Here's a long explanation:
Doing this:
<cfset qry1 = queryNew("column") />
Creates two things:
[query instance] - somewhere in memory
qry1 - a reference to the instance you can use in your code
Doing this:
<cfset qry2 = qry1 />
....we now have three things:
[query instance] - somewhere in memory
qry1 - a reference to [query instance] you can use in your code
qry2 - a reference to [query instance] you can use in your code
So if we do this (like your struct delete):
<cfset structDelete(variables, "qry1") />
....we don't actually delete the query, but just one of the references
to it, leaving us with this:
[query instance] - somewhere in memory
qry2 - a reference to [query instance] you can use in your code
If we then deleted qry2 using structDelete, the [query instance] would
no longer have any references, and would then be eligible for garbage
collection.
-Joe
On 1/5/06, Terry Ford <[EMAIL PROTECTED]> wrote:
> Hi Joe,
>
> That's what I used to think, too. But take the following code:
>
> <cfset q = session.qncache_qn>
> <cfset structdelete(session,"qncache_qn")>
> <cfdump var="#q#">
>
> That cfdump works. This shows that the whole query HAS been copied to Q.
>
> Regards,
> Terry
>
>
>
> >Hey Terry,
> >
> >Queries are references types in CF, so it's not an issue. Example:
> >
> ><cfset qry1 = queryNew("column") />
> ><cfset queryAddRow(qry1) />
> ><cfset querySetCell(qry1, "column", "foo") />
> >
> ><cfset qry2 = qry1 />
> ><cfset querySetCell(qry2, "column", "bar") />
> >
> ><cfdump var="#qry1#" />
> ><cfdump var="#qry2#" />
> >
> >-Joe
> >
> >
> >On 1/5/06, Terry Ford <[EMAIL PROTECTED]> wrote:
> >>
>
>
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