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docs: Add note about undefer

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Vincent Ambo 2017-10-22 17:40:29 +02:00
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@ -43,7 +43,8 @@ You can run the examples with `cargo run --example defer`, etc.
* `Drop` is not guaranteed to run in case of panics or program aborts, if you * `Drop` is not guaranteed to run in case of panics or program aborts, if you
need support for that check out [scopeguard](https://github.com/bluss/scopeguard) need support for that check out [scopeguard](https://github.com/bluss/scopeguard)
* `undefer` could be implemented safely by, for example, carrying a boolean that
by default causes execution to happen but can be flipped to disable it
## Further reading: ## Further reading: