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  2. RPG400-L
  3. May 2003

Re: programming language genealogy

Jon Paris wrote: 
Hans - I think you need to add the tabulators (19?? census) to your list for
RPG.  There is a very direct line evolution from the Tabs to the language
that was designed to emulate them.

The direct predecessor of RPG (I) was the plugboard for the 407 accounting machine, which is arguably not a programming language.

(See <http://www.columbia.edu/acis/history/407.html>)


We should also add a "blip" at 2001 for /free which is every bit as much an
evolutionary landmark as "C with classes" was for C/C++.
...

Please, no. RPG IV with free-form calcs an "evolutionary landmark"? I think it's rather embarrassing to call free-form syntax a landmark for a language considering it first occurred in the language in the 21st century, at least 4 decades after the first programming languages with fully free-form syntax.

Cheers! Hans



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