1.170 SystemExceptions.MustBeBoolean
Defined in namespace Smalltalk.SystemExceptions
Superclass: SystemExceptions.WrongClass
Category: Language-Exceptions
I am raised when one invokes a boolean method on a non-boolean.
1.170.1 SystemExceptions.MustBeBoolean class: signaling
(class)
1.170.1 SystemExceptions.MustBeBoolean class: signaling
signalOn: anObject
Signal a new exception, with the bad value in question being anObject.
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