Fergus' hack (was Re: [mercury-users] polymorphism)

[Fergus Henderson]

Bart Demoen wrote:
> 
> an impressive hack [...]
> I hope it is not recommended seriously

Why not? 

Is it really that difficult to fathom?
I thought it was reasonably straight-forward, myself.

P.S. I'd call it an "idiom", rather than a "hack"...

-- 
Fergus Henderson <fjh at cs.mu.oz.au>   |  "I have always known that the pursuit
WWW: <http://www.cs.mu.oz.au/~fjh>   |  of excellence is a lethal habit"
PGP: finger fjh at 128.250.37.3         |     -- the last words of T. S. Garp.