Category: Language-Exceptions
Superclass: Error
I am raised when one invokes a method with an invalid receiver or argument.

Method category index

signaling (class)
accessing (instance)

signaling (class)

signalOn: value
Answer an exception reporting the parameter as invalid.

signalOn: value reason: reason

Answer an exception reporting `value' as invalid, for the given reason.

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accessing (instance)

description
Answer a textual description of the exception.

messageText

Answer an exception's message text.

value

Answer the object that was found to be invalid.

value: anObject

Set the object that was found to be invalid.

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