====== Paul Gilmartin ====== wrote 2006-08-18 16:28:
In a recent note, Thomas Berg said:
Date: Fri, 18 Aug 2006 15:43:12 +0200
Yes, but at least regarding REXX I haven't found any mentionable
"wartifications"
.
Do You think of any specific points ?
o Absence of construct to pass arguments by reference.
Right. Although I only really missed it when returning results sometimes.
o Absence of facility to enumerate members of a compound variable.
Right, but is it really essential ? AFAICS, You can solve this quite easily
programmatically.
(Albeit clumsy.)
o Absence of construct to use expressions as compound tails
Is that essential ? As You have the alternatives Value() or just evaluate the
expression
before using the compound.
... I think those are the top three from the Rexx fora.
o Absence of instream data sets.
I dont understand this one.
o Absence of facility to perform concurrent ATTCHPGM
... but sometimes "address 'SYSCALL' 'spawn ...'" suffices.
o Absence of facility to perform molecular ENQs, a la JCL, in
order to avoid deadlocks.
o Inability to WAIT for SYSDSN ENQs.
o Absence of tape-specific support, such as RETAIN and VOL=REF.
I recognize the last several are environmental rather than
intrinsic to Rexx,
I think so. (Perhaps excluding "concurrent ATTCHPGM", but that's maybe
because TSO don't permit that ?)
and might be implemented in a function
package. But some of them need to be addressed in order to
make Rexx a viable alternative to JCL, or in any alternative
to JCL.
But I still prefer Rexx to JCL, and use it to build JCL when
some of the points above preclude an entirely-Rexx solution.
-- gil
--
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