I was messing around with implicit structs in ColdFusion 9.0.1 when I came across something odd. When I tried to code an implicit struct that contained a struct key named "default", like so:
...ColdFusion Builder would give me the code coloring equivalent of the stink eye (usually indicative of a syntax error somewhere), and if I tried to run the code, I would get an "Invalid CMFL construct" error.
Coding the same struct in tag format:
<cfset myStruct.default= "foo" />
...works just fine. I then tried out enclosing the key name in double-quotes as well:
...and ColdFusion will accept that.
Now of course "default" is a particular and significant attribute in certain contexts like cfparam and cfargument, but that shouldn't be an issue here. I found nothing in the bug database or on Google about this quirk, so perhaps there's a reason for it that I either don't know or can't remember?