On Nov 7, 2007 4:04 PM, James C Field <[EMAIL PROTECTED]> wrote:
> Let's not forget that one of the reasons that Ken Iverson wrote the book
> (A Programming Language) was to regularise and codify the description
> of algorithms.
> GOTO is fundamental to the operation of any stored program computer. He
Not quite: since storage of a value to a register used to index
the control store will do.
However, the _conceptualization_ is fundamental to the
_cognitive_ realization of what is going on.
>
> HAD to include it in APL if only for completeness.
More to the point;it had to be included in order for the language to be
emotionally acceptable
to the then current programmers.
However, I do not think that, or the issues we are discussing here, were
at the heart of what his original intent was:
the clarity of the _notation_, with
computer programming issues added in
not as a "tack on"
but rather as _subsidiary_ issues required for real world
usage"
in the environment he was then operating in.
Only later did the paradigm shift to "control-less" programming come...
And f you read practical APL coders doing interfacing with humans,
...you will find loops and branches all over the place...
I agree with the ideation that control structures are essentially simply
functional selection of iterative constructs of functors:
you may find earlier discussion on this in J archives about 2002 as I
recall,
where I made much the same points.
You also do not need built in types: you can build them up from a single
"mode" declarator (see Algol 68 earliest discussions).
And so forth.
>
>
>
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>
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