Functional programming in Python
Marcin 'Qrczak' Kowalczyk
28 May 2001 16:13:47 GMT
Mon, 28 May 2001 10:23:58 +0100, Malcolm Wallace <Malcolm.Wallace@cs.york.ac.uk> pisze:
> It seems that right-associativity is so intuitive that even the
> person proposing it doesn't get it right. :-)
And even those who correct them :-)
>> f x (foldr1 f xs) f x foldr1 f xs
> Wouldn't the rhs actually mean f x (foldr1 (f xs)) in current notation?
No: f (x (foldr1 (f xs)))
Basically Haskell's style uses curried functions, so it's essential
to be able to apply a function to multiple parameters without a number
of nested parentheses.
BTW, before I knew Haskell I exprimented with a syntax in which 'x f'
is the application of 'f' to 'x', and 'x f g' means '(x f) g'. Other
arguments can also be on the right, but in this case with parentheses,
e.g. 'x f (y)' is a function f applied to two arguments.
__("< Marcin Kowalczyk * email@example.com http://qrczak.ids.net.pl/
^^ SYGNATURA ZASTĘPCZA