Document forced unwrapping#2732
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Extend the optionals guide with forced unwrapping for `!.` and `![...]`, including how mixed `?` and `!` chains behave and when a failed unwrap raises `ValueError`. The optional chaining section now shows a chained method call, clarifies that the whole chain stays optional, and explains that separate handling is only needed once the result leaves the chain.
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Extend the optionals guide with forced unwrapping for
!.and![...], including how mixed?and!chains behave and when a failed unwrap raisesValueError. The optional chaining section now shows a chained method call, clarifies that the whole chain stays optional, and explains that separate handling is only needed once the result leaves the chain.