Ed,
I'm afraid you misread his code. [ call ] 2all? takes an array and a
sequence of predicates, and checks if the corresponding elements of
the array satisfy the quotation.
So it's equivalent to
first3 [ integer? ] [ string? ] [ string? ] tri* and and
Your code is equivalent to
[ integer? ] [ string? ] [ string? ] tri and and
Which is always false since integer /\ string = empty-set :-P
We don't have a macro for Phil's idiom yet. Something somewhat similar
comes up in extra/usa-cities:
7 firstn {
[ string>number ]
[ ]
[ string>state ]
[ string>number ]
[ string>number ]
[ string>number ]
[ string>number ]
} spread city boa
Not sure if its worth having an abstraction, but its something to keep
in the back of your mind.
Slava
On Sat, Jul 19, 2008 at 5:26 PM, Eduardo Cavazos <[EMAIL PROTECTED]> wrote:
> Phil,
>
> This version works for me:
>
> PREDICATE: s>po-clause < array
> { [ integer? ] [ string? ] [ string? ] } 1&& ;
>
> Ed
>
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