C++ coroutine and lambda’s lifetime

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We rarely need to worry about lambda’s lifetime more than any other objects in C++ until we are dealing with coroutine at the same time. folly’s wiki has a good example of why we need to be careful about lambda’s lifetime – https://github.com/facebook/folly/blob/main/folly/experimental/coro/README.md#lambdas. The tl;dr is that when you have a lambda that returns a coroutine handle, we need to make…

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