I was playing around with predicates today.
It seems that when I attempt to run a default constructor directly on a
predicate type, I get a macro expansion error.
I quickly grepped through the codebase in basis and extras, and couldn't
find an instance where a constructor was used off a predicate class.
Can I assume that predicate types are not intended to be instantiated
directly? Or am I assuming that erroneously?
TUPLE: rectangle width height ;
PREDICATE: square < rectangle [ width>> ] [ height>> ] bi = ;
C: <rectangle> rectangle
C: <square> square
3 3 <rectangle>
--> 12
3 3 <square>
--> The word <square> cannot be executed because it failed to compile
Macro expansion of “boa” threw an error
The error was:
Assertion failed
got 0
expect 1
[Traceback]
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