Python seems like a wonderful language. I didn't choose the Rexx language here. The client already had tens of thousands of lines of Rexx code and contracted with me to write a callable function in C++.
I did not become a very successful contract programmer by telling clients that if they wanted me to develop something they first had to re-write their existing system. Charles On Fri, 17 Nov 2023 05:02:57 +0800, David Crayford <dcrayf...@gmail.com> wrote: >I choose a language on capabilities rather than personal preference. I’ve been >accused on this forum by my ex-colleague and pal Wayne Bickerdyke of having a >pathological dislike of REXX. That’s not true, but I do find it less useful >than other languages. Python has a useful library called ctypes which includes >classes for mapping data structures with Python classes. We use >BigEndianStructure for mapping control blocks >https://docs.python.org/3/library/ctypes.html#ctypes.BigEndianStructure. It >would be cool if the tooling that we worked on with Peter Relson to create C >header files could be reused to generate Python mappings. With the recent zIIP >offloading Python is strategic. > >> On 17 Nov 2023, at 12:38 am, Charles Mills <charl...@mcn.org> wrote: >> >> Different strokes for different folks. >> >> 1. I was not aware of that pointer. This is the classic documentation >> problem. The answer is right there in the manual, clear as day -- provided >> you know where to look. A lot of these answers are easy to find, assuming >> you already know the answer. >> >> 2. My code is running a complex Rexx environment that frankly I do not fully >> understand. (I didn't write it and it isn't "mine.") I wanted to be sure I >> had THE right environment block, not SOME environment block. An >> 11-instruction assembler module seemed like a great solution. I still >> believe that it was. >> >> Charles >> >> On Thu, 16 Nov 2023 11:31:20 +0800, David Crayford <dcrayf...@gmail.com> >> wrote: >> >>> There's a TSO/E vector table that has the address of the REXX routines. >>> >>> // get the address of the TSO/e vector table >>> CVT * cvt = *(( CVT ** ) CVTPTR); >>> TSVT * tsvt = cvt->cvttvt; >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
