[erlang-questions] Bug ?!

Richard Carlsson <>
Wed Oct 4 10:33:12 CEST 2006


Richard A. O'Keefe wrote:
> Ever since I met them, I have *loved* n+k patterns in Haskell.

I agree that they are very cute. Probably too cute.
For a detailed discussion by the Haskell nomenklatura:
   http://www.cs.chalmers.se/~rjmh/Haskell/Messages/Decision.cgi?id=203
(Although at least part of their problem has to do with typing.)

> But also, when working with binary, ternary, and quaternary trees,
> I have wanted to do this:
> 
>     f(1) -> ...;
>     f(2*K+0) -> ...;
>     f(2*K+1) -> ....

It is really very pretty. One almost wants to pick it up and cuddle it. 
But it's probably the kind of feature that is catering too much for a 
special case while at the same time not really being useful all that 
often in real code.

     /Richard




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