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1.167 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.

1.167.1 SystemExceptions.MustBeBoolean class: signaling  (class)


1.167.1 SystemExceptions.MustBeBoolean class: signaling

signalOn: anObject
Signal a new exception, with the bad value in question being anObject.



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