Terry Reedy <tjre...@udel.edu> writes: > Three of you gave essentially identical answers, but I still do not > see how given something like > > def f(): return 1 > > I differentiate between 'function object at address xxx' and 'int 1' > objects.
In the languages they are talking about, there is no such thing as a function with no args. A function is closer to a mathematical function, i.e. a mapping from one type to another, so every function has an arg. Haskell and ML do have a "Unit" type, written "()", which is something like Python's "None". So in Haskell you could write f () = 1 which means the function f, applied to the Unit value (), results in the value 1. The parens are not function-calling syntax. () is simply a value. For example, you could say y = () z = f y which would mean that z = 1. -- http://mail.python.org/mailman/listinfo/python-list
