Anonymous function syntax

[Jacob Carlborg]

On 2011-09-22 08:47, Max Klyga wrote:
> Actually Scala doesn't need type declarations in labmda literals. Most
> of the time argument types are infered. It would be awesome if D infered
> argument types for labdas too.
> Also Java 8 adopted the same lambda syntax as Scala and C#.
>
> To add a few things to your list:
>
> Nemerle
> fun (x, y) { x + y }
> (x, y) => x + y
>
> Scala and Nemerle supports placeholder lambda syntax
> _ + _
>
> Scheme
> (lambda (x y) (+ x y))
>
> Smalltalk
> [ :x :y | x + y ]
>
> ML/Ocaml/F#
> fun x y -> x + y
>
> Ruby has a whole zoo of syntaxes
> {|x, y| x + y }
> ->(x, y) { x + y }
> do |x, y| x + y end
>
> Groovy
> { x, y -> x + y }
>
> So "(args) => body" is the most common syntax now
>

Scala also has this syntax that can be useful sometimes:

foo {
}

Where "foo" is a method taking a delegate as an argument. This allows to 
create, what looks like, new statements. Which can be very handy for DSL's.

-- 
/Jacob Carlborg