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$AssertFunction

$AssertFunction
specifies a function to apply to assertions that fail.
You can change the behavior when an assertion fails by assigning to $AssertFunction. This function throws an exception when an assertion fails:
Here the exception thrown by the assertion function is caught:
You can change the behavior when an assertion fails by assigning to $AssertFunction. This function throws an exception when an assertion fails:
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In[2]:=
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Here the exception thrown by the assertion function is caught:
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Out[3]=
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New in 8