Hi all,

Are there builint operators in Nemerle like |> >> << <| from F#.
They can be built with macros but I like experience.
For example:

macro @|> (e1, e2)
  {
    <[ $e2($e1) ]>
  }

I write:

 "a" |> Console.WriteLine

What precedence value should i specify in operator attribute?

How to implement <| which is right associative?

Thanks

You don't even need a macro. |> is already a function in the standard library, defined like this:

public static @|> (a : 'p1, fac : 'p1 -> 'r) : 'r
{
    fac(a)
}
public static @|> (a : 'p1, fac : 'p1 -> void) : void
{
    fac(a)
}

There are also <<, >>, and <|. You can find them all in lib/internal-numbered.n.

Здравствуйте, Don Reba, Вы писали:

DR>You don't even need a macro. |> is already a function in the standard library, defined like this:

DR>

DR>public static @|> (a : 'p1, fac : 'p1 -> 'r) : 'r
DR>{
DR>    fac(a)
DR>}
DR>public static @|> (a : 'p1, fac : 'p1 -> void) : void
DR>{
DR>    fac(a)
DR>}
DR>

DR>There are also <<, >>, and <|. You can find them all in lib/internal-numbered.n.


Thank you!