Pascal Jasmin wrote:
> a version that works with boxes and strings...
...
> (is there a way to factor out the @:] ...?)
Where b is a Boolean list and x0 and x1 are
lists of the same length,
b{"_1 x0,.x1
will select atoms from x0 where b is 0 and from x1
where b is 1.
I've often wished that 0 (in the context of * and +)
and 1 (in the context of *) would retain their
normal identities in the context of literals and
boxes. This would require literal and a box value
be identified to hold the value of 0 but would allow
Boolean masks to be used in those context. But I
think I'm the only person crazy enough to imagine that
this would be a good idea, and even I am not sure what
a zero box should look like.
--
Raul
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