[Haskell-cafe] Re: Field names

[Jonathan Cast]

On Wed, 2008-09-10 at 21:32 -0300, Mauricio wrote:
> >>>> Do you have any reference for that use of infixing
>  >>>> constructors by start their name with ':'?
>  >>>> (...)
> 
>  > (...) for data constructors, go to
>  >
>  > http://haskell.org/onlinereport/lexemes.html
>  >
>  > and search for `Operator symbols'. (...)
> 
> Here it is:
> 
>    “Operator symbols are formed from one or more
>    symbol characters, as defined above, and are
>    lexically distinguished into two namespaces
>    (Section 1.4):
> 
>      * An operator symbol starting with a colon is
>        a constructor.(...)”
> 
> Cool! What is the syntax for using that in 'data'?
> Is it something like “data X = Y | Int :°& Double”?

Right.  So then

(:°&) :: Int -> Double -> X

jcc