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<  User Contributions  ~  Currying parse transform
vladdu
Posted: Fri Sep 08, 2006 12:11 pm Reply with quote
User Joined: 28 Feb 2005 Posts: 397 Location: Gothenburg, Sweden
Hi!

By reusing an older utility function by Ulf Wiger, I've written a parse transform that looks for function calls with "don't care" arguments (which are illegal Erlang!) and replaces them with a functional expression currying the original on the missing arguments.

So if you write
Code:
    my:ff(2, _, erl, _, ang)

it will be transformed to
Code:
    fun(V1, V2) -> my:ff(2, V1, erl, V2, ang) end


This idea of "currying on steroids" is borrowed from Nemerle (www.nemerle.org)

Warning: The implementation has a funny gensym() implementation, so I'd not use it "as is" in a production environment.

Enjoy!
/Vlad


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