Question: or or `or` or Or or OrProp

 

is(k::OrProp(even, odd)) assuming k::integer;
                             false

is(k::Or(posint, nonposint)) assuming k::integer; # a synonym for OrProp
                             false

is(`or`(k::posint, k::negint, k = 0)) assuming k::integer;
                             false

Not including the infix or because that would fail for k=0 for different reasons.

 

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