lojix/logic/src/main/com/thesett/aima/logic/fol/OpSymbol.java
public boolean isInfix()
    {
        return ((associativity == Associativity.XFY) || (associativity == Associativity.YFX) ||
            (associativity == Associativity.XFX));
    }
public boolean isInfix()
    {
        return ((associativity == Associativity.XFY) || (associativity == Associativity.YFX) ||
            (associativity == Associativity.XFX));
    }
Reports whether this operator is an infix operator.

@return <tt>true <tt>if this operator is an infix operator.