Clojure Protocols & expression problem

[retard]

Wed, 28 Apr 2010 16:44:07 +0000, BCS wrote:

> Hello bearophile,
> 
> 
>> By the way, you can see an example of the expression problem here,
> 
> Could you elaborate on what exactly the expression problem is?

Learning the use of a search engine would help you greatly in your life:

=> http://www.google.fi/search?q=expression+problem

=> http://en.wikipedia.org/wiki/Expression_Problem

Some academic discussion can also be found:

=> http://lambda-the-ultimate.org/node/2232

But you've probably all (at least nick) blocked the domain since it 
contains too much academic nonsense coming from the ivory towers.