testArgFromFooX
Tests the query
?- arg(1,foo(a,b),X).Content copied to clipboard
succeeds on a solver initialized with default built-ins and with and empty theory, producing 1 solution which binds variable X to a.
Tests the query
?- arg(1,foo(a,b),X).succeeds on a solver initialized with default built-ins and with and empty theory, producing 1 solution which binds variable X to a.