What does 'shadows' mean?

Ralph DiMola rdimola at evergreeninfo.net
Mon Oct 10 10:26:15 CDT 2011


I have had this problem in the past and still do now and again. It seems to
rear its ugly head when doing a lot of variable adding/deleting/renaming
during development, but I have not been able to identify the exact
circumstances to reproduce. I am running on the IDE on XP. Sometimes closing
LC will fix it, other times the only way I found to fix it was to rename the
variable. I think this is a bug.

Ralph DiMola
IT Director
Evergreen Information Services
Phone: 518-636-3998 Ex:11
Cell: 518-796-9332

-----Original Message-----
From: use-livecode-bounces at lists.runrev.com
[mailto:use-livecode-bounces at lists.runrev.com] On Behalf Of Graham Samuel
Sent: Monday, October 10, 2011 6:02 AM
To: use-livecode at lists.runrev.com
Subject: What does 'shadows' mean?

Working on a script I've been using for some time, I just got a compilation
error for the local definition of a variable called "t1". The error was:

local: name shadows another variable or constant

The only meaning I can put to this is that I had already defined this
variable either as a local, global or constant in the current script - but
searching the script shows that I haven't. Also since I'm using explicit
variables, when I delete the (only) definition of t1, I get the usual error
warning me the name is undefined. So 'shadow' must mean something else.

I've tinkered around but I can't make the error go away.

Can anyone tell me what I did wrong? Doubtless it's some kind of finger
trouble.

TIA

Graham

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