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BPXWUNIX - z/OS' Best Kept Secret?
Maybe you've all heard of BPXWUNIX. Maybe it's just me that hasn't. Hence the question mark in the title. Seriously, I doubt this REXX function is as widely known about as it should be. And this post hopes to illustrate a little of its value. Suppose you're writing a REXX program with a stem variable in it. Suppose you want to sort the strings in the stem variable: You might write your own... [More]
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Another (Perhaps Obvious) Reason For Avoiding Unnecessary Sorts
Following on from The Best Sort Is The One You Don't Do here's another reason for eliminating sorts. I think it's worth a post in its own right. (In this post, again, I'm talking about resequencing passes over data - not copying or merging.) With a sort it's possible the last record read in might be the first record written out. So you can never overlap input and output phases. (There might... [More]
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