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On 30/04/2018 07:22, Greg Ewing wrote:<br>
<blockquote type="cite" cite="mid:5AE6B62F.9050902@canterbury.ac.nz">Jeff
Allen wrote:
<br>
<blockquote type="cite">I speculate this all goes back to some
pre-iteration version of FORmula TRANslation, where to its
inventors '=' was definition and these really were "statements"
in the normal sense of stating a truth.
<br>
</blockquote>
<br>
Yeah, also the earliest FORTRAN didn't even *have* comparison
<br>
operators. A conditional branch was something like
<br>
<br>
</blockquote>
I should have known that would turn out to be the most interesting
part in my message. Not to take us further off topic, I'll just say
thanks to Eitan's reply, I found this:<br>
<a class="moz-txt-link-freetext" href="http://www.softwarepreservation.org/projects/FORTRAN/BackusEtAl-Preliminary%20Report-1954.pdf">http://www.softwarepreservation.org/projects/FORTRAN/BackusEtAl-Preliminary%20Report-1954.pdf</a><br>
<br>
They were not "statements", but "formulas" while '=' was assignment
(sec 8) *and* comparison (sec 10B). So conversely to our worry, they
actually wanted users to think of assignment initially as a
mathematical formula (page 2) in order to exploit the similarity to
a familiar concept, albeit a=a+i makes no sense from this
perspective.<br>
<br>
<pre class="moz-signature" cols="72">Jeff Allen
</pre>
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