What if the concept of null values was introduced via two new functions:
NullNew() and IsNull()? I could assign a null value to variables with the
first function:
<cfset myNull=NullNew()>
<cfreturn NullNew()>
You could also use NullNew() to pass null values to Java function instead of
using JavaCast("null", "").
For purposes of type-checking for CFARGUMENT and CFRETURN, a value returned
by NullNew() will match any type.
For those who want loose typing, a value return by NullNew() will look like
an empty string. In other words, the following CFIFs would both evaluate to
TRUE:
<cfif IsNull( myNull )>
<cfif myNull EQ "">
It seems to me that this would be fully backwards-compatible and be
relatively easy to implement.
Vince Bonfanti
http://blog.newatlanta.com
New Atlanta Communications, LLC
http://www.newatlanta.com
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