On 30/12/2013 11:11 PM, Paul Gilmartin wrote:
>Most VMers claim that Rexx is superior on VM because of CMS pipes.
>That's a pretty strong argument.
>
That's analogous to claiming that Rexx is superior on z/OS because
of "address SYSCALL" (others might say ISPEXEC/ISREDIT).
Perhaps. But pipes are part of the base CMS product and are considered
fundamental to REXX programming on VM. On z/OS they are either a very
expensive add-on product or have to run in the POSIX subsystem.
Designing routines to co-operate in a pipeline is a very different
programming paradigm to what the vast majority of REXX programmers on
z/OS are familar with. NetView had pipes and they were incredibly
useful for processing message streams. I used to miss that
functionality when coding TSO REXX. Of course, IBM are in the business
of making a buck; but it's a travesty that they never made pipes, both
TSO and batch, part of the base software stack.
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