Python scoping
Quinn Dunkan
quinn at cruzeiro.ugcs.caltech.edu
Sun Nov 5 22:38:18 EST 2000
On Wed, 1 Nov 2000 23:09:12 GMT, Garry Hodgson <garry at sage.att.com> wrote:
>Michael Ackerman wrote:
>>
>> "Steven D. Majewski" wrote:
>> >
>> > On Tue, 24 Oct 2000, Joshua Muskovitz wrote:
>> >
>> .
>> > A situation where the human eye uses indentation and the compiler
>> > uses braces is unsafe.
>>
>> Why is it unsafe? Doesn't it work well in Haskell?
>
>haskell uses indentation, like python.
But the compiler uses braces. Think about it the next time hugs gives you an
"unexpected }" error when you haven't written any braces. Aside from a few
non-obvious error msgs, I haven't found it to be unsafe. No one's been hurt,
gotten pregnant, or been tagged out by it. So I don't put a lot of stock in
the original poster's unsupported vague assertion :)
Of course, there are a few oddities with the combination of do-notation sugar
mixed with offside rule sugar... having multiple layers of syntax rewriting
going on *does* seem confusing and too complicated to me. E.g.
do
x <- foo
if baz then bar else ...
is no good, but
do {
x <- foo;
if baz then bar else ...
}
works, as does
foo >>= \x -> if baz then bar else...
But I'm sure if I spend a little time with the Report it'll come clear :)
And anyway, I'm glad python is not so sugar-happy.
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