EnumSet: added methods union(), intersect(), diff() and symDiff() #66
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see #62
These methods create a clone of
$this
and change the bitset to not depend on implementation details of extended classes.EnumSet::union(EnumSet ...$others) : EnumSet
EnumSet::intersect(EnumSet ...$others) : EnumSet
EnumSet::diff(EnumSet ...$others) : EnumSet
EnumSet::symDiff(EnumSet ...$others) : EnumSet