Boolean is the superclass of True and False which are the concrete realizations. In code True and False are represented by the literal values true and false.
the exclusive or of the receiver and another Boolean.
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.
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.
true if the receiver is true and aBoolean is true.
true if either the receiver is true or aBoolean is true.
true unless both the operands are true (Sheffer stroke)
true if the receiver is false, and false if the receiver is true.
If the receiver is true, answer the evaluation of the trueFunc. If the receiver is false, answer the evaluation of the falseFunc.
1 if the receiver is true, and 0 if the receiver is false.
The receiver. The same message is understood by SimpleNumber and can be used to convert it to boolean.
turn on/off warnings if a keyword argument is not found