PMA wrote:
Jacques Menu wrote:
Hello,
Yes, historically a disctinction was made between the « sub-programs »
that return a value and those that don’t, but the Scheme docs seem to
use the terms function and procedure interchangeably.
In C++, everything is a function : a procedure is merely a function
that returns a value of the « void » type, i.e. no value.
JM
Le 18 avr. 2015 à 18:33, David Nalesnik<david.nales...@gmail.com> a
écrit :
On Sat, Apr 18, 2015 at 4:51 AM, Urs
Liska<u...@openlilylib.org<mailto:u...@openlilylib.org>> wrote:
Hi all,
I just stumbled over a terminology issue: are "procedure" and
"function" synonyms in Scheme or do they refer to different things?
From my earliest experiences with programming I'd recall the
difference to be that functions return a value and procedures don't.
But that's clearly not the case in Scheme.
Any enlightenment available?
Well, I'm guilty of using them interchangeably...
Anyway, maybe the following will help -- or add to the confusion :)
http://stackoverflow.com/questions/721090/what-is-the-difference-between-a-function-and-a-procedure<http://stackoverflow.com/questions/721090/what-is-the-difference-between-a-function-and-a-procedure>
DN
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Hi List --
AFAIK, of our major ancestor languages, only Pascal insisted on a
literal working
function-vs-procedure distinction. Did Wirth ever defend this insistence
(as more
than a track-keeping enforcer re value-outputting vs
non-value-outputting code)?
PMA
P.S. Did he intend a "function" to embody purely a single mathematical
function (one too fussy to be a command primitive), or were the innards
to be open to other code as well? And if the latter, did he consider that
a growing incorporation of such code might well smush the boundaries
of his original func-vs-proc distinction (which, clearly, hasn't caught on)?
PMA
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