On Mon, 3 Mar 2008 06:50:22 -0800 (PST), in
bit.listserv.ibm-main
(Message-ID:<[EMAIL PROTECTED]>)
[EMAIL PROTECTED] wrote:
Hi,
I'm fairly new to Rexx, so please give helpful advice and
not "Aren't
you stupid" responses.
1. REXX questions will likely get a better response on the
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I've had a couple of instances now where I want to be able
to use a
command/function which I know may fail, but prevent the
Rexx from
failing. I've scoured documentation and can only find the
SIGNAL
statement & OUTTRAP function, neither of which seem to
work, unless
I've missed the point.
Surprisingly (especially to newcomers) you may have
to use SIGNAL ON SYNTAX rather than ON ERROR for many
errors. I have not checked whether that is so for the
below; I strongly expect it is for your latter
example. You haven't said what SIGNAL statements you
tried. OUTTRAP is *not* what you want for this.
Here's the rest of your original post for those who
read the Listserv:
Here are two examples:-
1. ISPEXEC "BROWSE "DSN
This fails when you try browsing an empty dataset (even
though the
documentation I've read says it responds with RC
12). I've ended up
doing a LISTDSI and checking SYSUSED > 0 to prevent this
problem - but
I would still like to TRAP an error rather than
pre-empting one.
2. valDate = DATE('E',StartDate,'E')
I want to validate a user-supplied date is in the correct
format
without the rexx failing if it's invalid.
In this latter case there are a few suggestions in the
thread
http://groups.google.co.uk/group/bit.listserv.ibm-main/browse_thread/thread/8882f674b0380a99/ecbae95979efa2c7?hl=en&lnk=gst&q=rexx+DATE+trap+OR+SIGNAL+OR+OUTTRAP#ecbae95979efa2c7
but they mainly involve reinventing the wheel instead of
using the
standard, flexible & powerful DATE builtin.
Any suggestions appreciated,
Regards,
Clark.
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