I learned a lot from the CICS source code IBM distributed for years. I learned how to hash, build segmented tables, how to build linked lists, all techniques I incorporated in my programs to make them dynamic and resilient.
Robert Crawford Mainframe Management United Services Automobile Association (210) 913-3822 “Nothing can be beautiful which is not true." John Ruskin Please send requests to mainframe management through our front door at go/mfmfrontdoor -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Brian Westerman Sent: Monday, October 31, 2022 11:47 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: EXTERNAL: Re: End of several eras I agree, I can't possibly convey how much I learned from some old IBM fiche that I had access to in the computer center when I just started college. The first really important thing I wrote (I was 17) were mods to pass the condition codes from step to step within JES2 and then send the highest one to the console and syslog at job end. I later learned that others had done the same thing, and long before me, but I learned a lot. That code didn't work with the first version of MVS I was exposed to after college, so it was followed by doing that same thing with two jes exits and then even later writing our companies Automation software that pulls the condition codes from the same fields they were placed in originally way back then. Everything I have written over the years is still based on concepts and techniques that I first learned by looking at the code in the IBM fiche. I had an extra advantage in that I worked for IBM throughout that same time and was able to see some truly spectacular coding techniques and I am truly thankful for that opportunity. I realize that IBM wanted to keep nefarious people from copying the code, but I think that we lost a great deal of experience and expertise when we lost access to the code. Some of those techniques are just not around for people to examine and learn from, and that's very sad. Brian On Mon, 31 Oct 2022 19:42:50 -0400, David Spiegel <dspiegel...@hotmail.com> wrote: >Hi Tom, >1983, eh? >The same year as the (expletive deleted) OCO policy. >I've seen IBM-lifers defend it on this forum, yet, it still did >not/does not make sense. > >Regards, >David > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN USAA Classification: Public Disclaimer: This email and any attachments are the property of USAA and may contain confidential and/or privileged material. If you are not the intended recipient, any use, disclosure or copying of this email or any attachments is unauthorized. If you received this email in error, please immediately notify the sender and delete the email and any attachments from your computer. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
