configuration struct. This struct contains a substruct. What's the best
way to test for the existence of the substruct?
Right now I've got the following, which works, but I'm not sure it's
really best.
<cfif not IsDefined("attributes.cfg")>
<cfset attributes.cfg = StructNew()>
</cfif>
<cfparam name="attributes.cfg.errorpage" default="/error.cfm">
<cfparam name="attributes.cfg.banners" default="yes"
type="boolean">
<cfif not IsDefined("attributes.cfg.subthing")>
<cfset attributes.cfg.subthing = StructNew()>
</cfif>
<cfparam name="attributes.cfg.subthing.color" default="#000000">
<cfparam name="attributes.cfg.subthing.value" default="bob">
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