On 6/22/05, Bill Rawlinson <[EMAIL PROTECTED]> wrote:
I tested this on CFMX 6.1 and have the same behavior.
I expanded your test some to do a getMetaData. Here is my test and I
put the result of each cfoutput block to the right in parentheses.
<cfset s = "NaN">
<cfoutput>
#getMetaData(s)#<br> (class java.lang.String)
#getMetaData("1")#<br> (class java.lang.String)
</cfoutput>
<cfset s = "one">
<cfset test = (s is "1")>
<cfoutput>#test# - #getMetaData(s)#</cfoutput><br> (NO class java.lang.String )
<cfset s = "NaN">
<cfset test = (s is "one")>
<cfoutput>#test# - #getMetaData(s)#</cfoutput><br> (NO class java.lang.String)
<cfset s = "NaN">
<cfset test = (s is "1")>
<cfoutput>#test#</cfoutput><br> ( The value "NaN" cannot be converted
to a number)
wierd stuff
Bill
On 6/22/05, Roland Collins < [EMAIL PROTECTED]> wrote:
> I'm seeing a very odd and very troubling behavior in CF, which I'm hoping
> someone can shed some light on or just confirm the oddity. It appears that
> "NaN" is a reserved word in CF, presumably because it is the "Not a Number"
> constant in Java", even though it shouldn't be. Dump this code in a page
> and try it in CF (I'm using 7):
>
> <cfset s = "one">
> <cfset test = (s is "1")>
> <cfoutput>#test#</cfoutput>
>
> <cfset s = "NaN">
> <cfset test = (s is "one")>
> <cfoutput>#test#</cfoutput>
>
> <cfset s = "NaN">
> <cfset test = (s is "1")>
> <cfoutput>#test#</cfoutput>
>
> Now, I would _expect_ the code to generate "No No No". But guess what
> happens . . . The first two statements work fine, but the third one throws a
> *type conversion* error. More specifically, it throws "The value "NaN"
> cannot be converted to a number".
>
> Type-less language, my backside! Why is it trying to do a number conversion
> here? I even have the "1" in quotes, for Pete's sake. It doesn't even work
> if I add spaces around it, as in " NaN " or " 1 ". And it gets even
> _sloppier_ . . . this only occurs if you use the capitalization "NaN".
> "NAN", "Nan", "nan", etc. work just fine. Since when is CF
> case-sensitive??!?!?!
>
> Now here's why it's a problem - "NAN" is a perfectly valid user-input
> statement in our system (think stock symbols). So now whenever we perform
> user-validation, we have to have a special filter for "NaN" and make sure it
> is converted to either all upper or all lower case!
>
> Does anyone else find this frightening?
>
> Does anyone know where the link to report CF bugs went?
>
> Roland
>
>
>
>
>
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