Frederic,
Frederic,
Sorry to have touched a nerve, I thought it was a rather innocuous post, so
take it or leave it. You could have considered yourself one of the
experienced programmers that my comments were not useful to and let it lie.
I would certainly agree that if three people thought the syntax looked fine
that it probably was.
If you or anyone else can reproduce the error I think we'd all be interested
because you are calling into question the stability of one of the most used
tags.
Okay, it's dead now.
Tim
-----Original Message-----
From: C Frederic Valone [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 28, 2001 6:40 AM
To: CF-Talk
Subject: Re: "isdefined" obsolete?
Tim.... This can be the case when I single programmer, no matter what level
has a problem... if that problem then persists after
re-writing the code and you then pass the questionable code over to two
other programmers to to check and they still have the
same issue the problem is probibaly not that everyone overlooked a simple
syntax error.
Please kill this thread now I do not feel like defending my experiences any
more (I already have conformation that others have
experienced the same problem)
Thanks to all for their input.
Frederic
Tim Fields wrote:
>
> Gentlemen,
>
> It seems most likely that there was some variety of a syntax error in the
> errant IsDefined() condition. How many times have you stared at code
> convinced it should work only to suddenly see a extraneous or missing
> character like a single quote? Sometimes we are looking at the forest not
> the trees.
>
> I'd suggest that when perplexed about a single line of code not
functioning
> properly, start by doing the old proof reading method of reading the line
> backwards. Also I've occasionally found it helpful to print out the code
in
> color and then used various colored highlighters to mark up the code,
> especially helpful with breaking down regular expressions.
>
> Sorry that's a bit Off Topic and probably not real useful to advanced
> programmers, but it would seem to address what is most likely at the root
of
> this IsDefined "problem".
>
> Tim Fields
>
> -----Original Message-----
> From: Ruslan Sivak [mailto:[EMAIL PROTECTED]]
> Sent: Friday, February 23, 2001 12:25 PM
> To: CF-Talk
> Subject: RE: "isdefined" obsolete?
>
> The only time I had a problem using isDefined is when I forgot to use
> quotation marks around the variable. The other thing is I don't think
> isdefined works well on structs, you have to use StructKeyExists.
>
> -----Original Message-----
> From: C Frederic Valone [mailto:[EMAIL PROTECTED]]
> Sent: Friday, February 23, 2001 1:48 PM
> To: CF-Talk
> Subject: Re: "isdefined" obsolete?
>
> If you see my previous response you'll see I tried all forms of syntax...
> even those I "knew" were incorrect.... as stated the
> problem was not logical so I tried illogical solutions as well.
> This happened I would say two years or more ago... so I doubt very much I
> was using 4.5.1 as it hadn't been released...I only
> mentioned the whole issue as an FYI. I see it did happen for someone else
on
> the list as well.
> Frederic
>
> Philip Arnold - ASP wrote:
> >
> > > Sorry to contadict you Adrian, but I can say with complete conviction
> > > (and no explanation at all) that these experiences did happen...I
> > > know that obviously a variable either exists or doesn't. That
> > > doesn't mean that in every instance a function will work though.
> > > I replaced the isdefined function (after checking to be sure the
> > > syntax was correct) with parameterexists and it worked. I
> > > switched it back to isdefined and it did not. I did it in more than
one
> > > instance and I confirmed the issue and verified the results of
> > > the workaround with other cf programmers on site.
> >
> > As long as the quotes are around the variable name, then it will work -
> > unless you're running a not-upgraded version of CF (4.0 or 4.5 rather
than
> > 4.0.1 and 4.5.1 SP2)
> >
> > I've never had a problem with isDefined(), and it's much easier to use
> than
> > ParameterExists(), especially if you're using dynamic names
> >
> > isDefined("form.#i#") is easier than
Evaluate("ParameterExists(form.#i#)")
> > for obvious reasons although both should work exactly the same
> >
> > Philip Arnold
> > Director
> > Certified ColdFusion Developer
> > ASP Multimedia Limited
> > T: +44 (0)20 8680 1133
> >
> > "Websites for the real world"
> >
> > **********************************************************************
> > This email and any files transmitted with it are confidential and
> > intended solely for the use of the individual or entity to whom they
> > are addressed. If you have received this email in error please notify
> > the system manager.
> > **********************************************************************
> >
> >
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
