LiveDocs Comments - coldfusion - 6.1 - htmldocs - tags-pa9.htm

coldfusion/6.1/htmldocs/tags-pa9.htm

carehart — 2005-09-23T08:16:55

I need to update my comment above: a constant expression like #'a'# or even #1+1# does indeed work as a CFCASE VALUE in CFMX (though not CF5). When testing it (before making my last comment), I had a different problem that I misinterpreted.

Still, I'll hope that my identification here of what a constant expression is may help others.

That said, I have to say I still don't see why one would ever use one. If any readers ever think of a practical use, I'm sure others would appreciate hearing of it.

coldfusion/6.1/htmldocs/tags-pa9.htm

carehart — 2005-09-22T14:11:12

Folks, the docs here suggest that a CFCASE value can be a constant or a "constant expression". Yet nowhere do I find that term defined in the CFMX 6.1 docs. Some have interpreted it to mean an expression that resolves to a constant (such as #'a'#), but any attempt to refer to pound signs in a CFCASE value gets an error in CFMX 6.1. What is meant above by constant expression? (I've noticed the CFMX 7 docs have the same issue, and will post this there for those who don't read it here.)

coldfusion/6.1/htmldocs/tags-pa9.htm

Mike@Jobscience — 2005-01-20T10:42:51

It appears that cannot use a component or function scoped variables in it's value expression. The following code sets throw the same compilation error: This expression must have a constant value.

Match!/cfcase>

Match!

However, using an if statement, no error is thrown and the function behaves as expected.

Match!

I assume this has to do with the way Neo's Assembler/Translation engine compiles the switch statement, requiring the value to be known a the time of compilation rather than runtime as with an if statement??

--Mike

coldfusion/6.1/htmldocs/tags-pa9.htm

BuckyGoldstein — 2004-10-22T11:12:27

I'm trying to test both for "equals" and "greater than" in a cfswitch statement. It seems to me I should be able to do:

How come I get the error message "Invalid token '1' found on line 40 at column 50."?

coldfusion/6.1/htmldocs/tags-pa9.htm

GAlanShepherd — 2004-05-21T11:50:38

I'm trying to use cfcase with a variable expression, which the documentation says should work, but it doesnt appear to (indeed, it breaks the error mechanism). I have:

and cold fusion generates an error saying that the expression must be constant, but that it cant determine where the error is. If I change the to , it works fine.

coldfusion/6.1/htmldocs/tags-pa9.htm

halL — 2004-02-18T13:19:23

This is a known issue in ColdFusion MX 6.1 (bug number 53339).

coldfusion/6.1/htmldocs/tags-pa9.htm

Steve — 2004-02-17T08:23:50

now also works in conjunction with a . This is really screwy and isn't backwards compatible with cf5. Run this on a cf5 and a cfmx machine and you'll see what I mean:

#count#

on cf5 it displays: 1 2 3

on cfmx it displays 1 2 3 4