[REBOL] Re: source code layout question
From: carl:cybercraft at: 5-Jan-2002 12:41
On 05-Jan-02, Joel Neely wrote:
> foo: func
> [ "Computes a Euclid string for numeric data"
> x [integer!] "major argument"
> y [integer!] "corporal argument"
> z [integer!] "seed string, modified by evaluation"
> ][ either x = 0
> [ z]
> [ either y = 0
> [ head reverse z]
> [ while [x < y]
> [ y: y - x
> append z "x"
> ]
> foo y x z
> ] ] ]
I rather like that, in that the relationship between the opening and
closing brackets is much easier to see than with conventional styles,
it creating obvious vertical lines. It's only drawbacks I think are
three extra spaces on some lines (minor) and not being able to cut
and paste it into the Console - a major disadvantage, I think. If
it wasn't for that, it'd be tempting to switch to it. And when
there's no nesting, the code becomes very clear...
if x = 0
[ y]
either a = b
[ c]
[ d]
while [h = i]
[ j k l]
for n 1 10 1
[ print n]
quit
My current style (such as it is:) is much the sames as Petr's,
('either's blocks being on one line being fine with me, though I see
your point in only allowing it with 'while's conditional block), so
I'd write...
foo: func [
"Computes a Euclid string for numeric data"
x [integer!] "major argument"
y [integer!] "corporal argument"
z [integer!] "seed string, modified by evaluation"
][
either x = 0 [z][
either y = 0 [head reverse z][
while [x < y][
y: y - x
append z "x"
]
foo y x z
]
]
]
And that's a line longer than your somewhat more clearer version. I
try not to have more than one evaluation on a line though, unless
they're within a block. So this I'd try to avoid - (usually:)...
while [x < y][y: y - x append z "x"]
Even though it'd save three lines.
Pity about the cutting and pasting problem Joel. ):
--
Carl Read
