Re: Recursion, Yo

scott@slp53.sl.home (Scott Lurndal) writes:

Tim Rentsch <tr.17687@z991.linuxsc.com> writes:
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Michael S <already5chosen@yahoo.com> writes:
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On Mon, 15 Apr 2024 20:36:58 +0200
Janis Papanagnou <janis_papanagnou+ng@hotmail.com> wrote:
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Algol 68 and C are so different that mutual understanding might be
difficult depending on personal background, focus, and fantasy. :-)

>
Interesting take.
I never learned Algol-68, but from pieces of info that I occasionally
got I was always thinking of it as rather similar to 'C'.
Both languages originated from common ancestor (Algol-60) and changed
it in similar directions, e.g. blurring the line between operators and
expression, making function pointers first class citizen, allowing
declaration of variables at block scope.
I think, in the past, when I remembered more about Algol-68, I had seen
more similarities.

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Algol 60 already had block scope declarations.
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Algol 60 may not have had (pointer to) function/procedure variables,
but it did allow procedure identifiers as arguments to a procedure
call, and procedure variables are an obvious generalization.

>
Call-by-name.

Algol 60 also had call by name (already mentioned in my previous
post), but that is unrelated to allowing procedure identifiers
as arguments.