Web Reference: Instead of checking every possible failure manually, Ruby lets you rescue exceptions, handle them gracefully, and keep your application stable. This tutorial walks through Ruby exceptions step by step, with clear explanations and practical code examples. The exception is matched to the rescue section starting at the top, and matches only once. If an ArgumentError is raised in the begin section, it will not be handled in the StandardError section. Let's add some exception handling code and see how it helps. We enclose the code that could raise an exception in a begin / end block and use rescue clauses to tell Ruby the types of exceptions we want to handle.
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