Re: [Haskell-cafe] alphanum in infix constructors (and possibly functions as well) - why not?

Ozgur Akgun writes:

Hi all,

The constructor names in Haskell need to obey one of the two following rules: - either starts with a capital letter and contains alphanumeric characters afterwards, (including _ I guess) - or starts with a colon (:) and only contains symbols afterwards

The first one is used Prefix by default, and the second ose is used infix by default.

What stops us from allowing alphanum characters appear in the Infix version (after the colon)? Can't it be relaxed to only start woth a colon?

The definition. I believe this is probably to make parsing of "foo:

So I want to be able to say something like:

data Expr = Expr :< Expr -- checks for LT betwen two Expr's | Expr :<2 Expr -- a different implementation of the same thing maybe | Expr :

How does a data structure have a faster implementation? >_> -- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com