[Inquiry] Re: Theme One Program -- Commentary

[Jon Awbrey]

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o

TOP.  Commentary Note 12

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o

Anon.

Anon is a function from integers to integers
that outputs its argument incremented by one.
The argument is treated as a value parameter,
so only the functional value is upped by one.

function anon (what: numb): numb;
begin
 inc (what);  anon := what
end;

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o

Anew.

Anew is a function from integers to integers
that outputs its argument incremented by one.
The argument is cast as a variable parameter,
so its value is incremented as a side-effect.

function anew (var what: numb): numb;
begin
 inc (what);  anew := what
end;

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o

Alow.

Alow is a function from integers to integers
that outputs its argument decremented by one.
The argument is treated as a value parameter,
so only the functional value is decremented.

function alow (what: numb): numb;
begin
 alow := what - 1
end;

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o

Abye.

Abye is a function from integers to integers
that outputs its argument decremented by one.
The argument is cast as a variable parameter,
so its value is decremented as a side-effect.

function abye (var what: numb): numb;
begin
 what := what - 1;  abye := what
end;

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o
inquiry e-lab: http://stderr.org/pipermail/inquiry/
o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o