« first day (161 days earlier)      last day (3042 days later) » 

18:09
@Suever Great work on clarifying what's truthy and what's falsy here! This can be used in the future as a canonical answer
2
A couple of comments: all values are non-zero could perhaps be replaced by it doesn't contain any zero value. That way the empty case is covered
Removing a final A is not possible if the array may be empty. [] is falsy, but []A gives T and thus is truthy
Also, this is perhaps too much detail, but for complex values the real part is considered (as in old Matlab versions). So 2j is falsy
... Or maybe a clearer wording would be if it is non-empty and all its values are non-zero
 
4 hours later…
21:51
Pushed:
g (logical) now accepts complex input (and uses its absolute value)

« first day (161 days earlier)      last day (3042 days later) »