Re: Glib::IO->add_watch not uninstalling

On 25/02/07, Torsten Schoenfeld <kaffeetisch gmx de> wrote:
* and & return the elements that are in both sets -- evaluating this in
a bool context works because an empty set turns into false and a
non-empty set turns into true.  Note that * and & are commutative:

  a * b == b * a.

>=, on the other hand, specifically tests if the first set contains the
second set -- so >= is not commutative.



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