[mercury-users] false function

[Michael Day]

> I understand what the function would be used for, I'm just not convinced
> the situation arises frequently enough to justify adding something to
> the library.

Right, it's simple enough to define in your own code when you want it,
anyway.

> It's not much harder to write your function as
> 
> f(X) = Y :-
> 	     if bar(X) then Y = ...
> 	else if baz(Z) then Y = ...
> 	else                false.

Cute when they all fit on one line like that, but they don't. Simple code
with fewer redundant variables is easier to cut/paste/regex :)

Michael

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