**Boolean**

**superclass: Object**

Boolean is an abstract class whose instances represent a logical value.

Boolean is the superclass of True and False which are the concrete realizations.

**xor(aBoolean)**

Answers the exclusive or of the receiver and another Boolean.

**and(function)**

**and: function**

If the receiver is true then answer the evaluation of function.

If the receiver is false then function is not evaluated and the message answers false.

**or(function)**

**or: function**

If the receiver is false then answer the evaluation of function.

If the receiver is true then function is not evaluated and the message answers true.

**&& aBoolean**

Answers true if the receiver is true and aBoolean is true.

**|| aBoolean**

Answers true if either the receiver is true or aBoolean is true.

**not**

Answers true if the receiver is false, and false if the receiver is true.

**if( trueFunc, falseFunc )**

If the receiver is true, answer the evaluation of the trueFunc. If the receiver is false, answer the evaluation of the falseFunc.

**binaryValue**

Answer 1 if the receiver is true, and 0 if the receiver is false.