Evaluate the receiver; when #error: is called, pass to aBlock the receiver
and the parameter, and answer the result of evaluating aBlock. If another
exception is raised, it is passed to an outer handler; if no exception is
raised, the result of evaluating the receiver is returned.
on: anException do: aBlock
Evaluate the receiver; when anException is signaled, evaluate aBlock
passing a Signal describing the exception. Answer either the result of
evaluating the receiver or the parameter of a Signal>>#return:
on: e1 do: b1 on: e2 do: b2
Evaluate the receiver; when e1 or e2 are signaled, evaluate respectively
b1 or b2, passing a Signal describing the exception. Answer either the
result of evaluating the receiver or the argument of a Signal>>#return:
on: e1 do: b1 on: e2 do: b2 on: e3 do: b3
Evaluate the receiver; when e1, e2 or e3 are signaled, evaluate
respectively b1, b2 or b3, passing a Signal describing the exception.
Answer either the result of evaluating the receiver or the parameter of a
Signal>>#return:
on: e1 do: b1 on: e2 do: b2 on: e3 do: b3 on: e4 do: b4
Evaluate the receiver; when e1, e2, e3 or e4 are signaled, evaluate
respectively b1, b2, b3 or b4, passing a Signal describing the exception.
Answer either the result of evaluating the receiver or the parameter of a
Signal>>#return:
on: e1 do: b1 on: e2 do: b2 on: e3 do: b3 on: e4 do: b4 on: e5 do: b5
Evaluate the receiver; when e1, e2, e3, e4 or e5 are signaled, evaluate
respectively b1, b2, b3, b4 or b5, passing a Signal describing the exception.
Answer either the result of evaluating the receiver or the parameter of a
Signal>>#return: