[Haskell-beginners] Re: Offside rule for function arguments?
Jonas Almström Duregård
jonas.duregard at chalmers.se
Mon Aug 23 05:52:22 EDT 2010
> The indentation on the second line would generate a parse error, the same
as it does now.
What parser error is that? Both
function 0 = 0 where
fun 1 = 1
function 2 = 2
and
function 0 = 0 where
fun 1 = 1
fun 2 = 2
works for me.
/J
On 23 August 2010 11:46, John Smith <voldermort at hotmail.com> wrote:
> The indentation on the second line would generate a parse error, the same
> as it does now.
>
>
> On 23/08/2010 12:32, Jonas Almström Duregård wrote:
>
>> Maybe because of this:
>>
>> function 0 = 0 where
>> fun 1 = 1
>> 2 = 2
>>
>> The last declaration (2=2) can define either fun or function. I'm not
>> saying this is a major problem, but there may be
>> other problems like these.
>>
>> /J
>>
>> On 23 August 2010 11:15, Brent Yorgey <byorgey at seas.upenn.edu <mailto:
>> byorgey at seas.upenn.edu>> wrote:
>> > On Mon, Aug 23, 2010 at 09:33:13AM +0300, John Smith wrote:
>> >> Why doesn't Haskell allow something like this?
>> >>
>> >> fac 0 = 0
>> >> 1 = 1
>> >> x = x * fac (x-1)
>> >>
>> >> This would be clearer than repeating the function name each time,
>> >> and follow the same pattern as guards and case.
>> >
>> > Good question. I don't know of any particular reason.
>> >
>> > -Brent
>>
>
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