Lightning Talk: Into the Lambdaverse - Weird C++ Lambda Shenanigans
summary
Explains why modifying a captured variable sometimes fails: lambda's operator() is const unless mutable is used, but init-captures introduce an implicit auto variable whose deduced type (and constness) determines the captured member, so a const original can yield a const capture. Shows the surprising fix of writing n = n to force a mutable copy, cites post-C++23 rule changes about parentheses, and traces behavior back to the standard's wording about no extra copy.
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