2015-02-24 10:30:12 +00:00
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---
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title: All About Exceptions
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author: Michael Snoyman <michael@fpcomplete.com>
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description: All of the necessary information to understand exceptions
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first-written: 2015-02-24
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last-updated: 2015-02-24
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last-reviewed: 2015-02-24
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---
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Should cover:
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* Throwing exceptions
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* Catching exceptions
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* Exceptions in pure code
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* Difference between `throw` and `throwIO`
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* Async exceptions
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* Catching all exceptions
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* http://www.yesodweb.com/blog/2014/05/exceptions-cont-monads
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* https://www.fpcomplete.com/user/snoyberg/general-haskell/exceptions/exceptions-and-monad-transformers
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* https://www.fpcomplete.com/user/snoyberg/general-haskell/exceptions/catching-all-exceptions
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* Exceptions problems. Can't wrap. Can't have two exceptions. No idea how exception was thrown.
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* [Wrap exceptions to provide context](http://stackoverflow.com/questions/27346380/how-to-wrap-exceptions-to-provide-context)
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* [General dislike of exceptions](http://www.reddit.com/r/haskell/comments/2ety9f/new_blog_post_dealing_with_asynchronous/ck3fkbp)
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2015-02-24 10:47:31 +00:00
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* enclosed-exceptions
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2015-03-04 07:31:07 +00:00
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* Examples of code-conversion between all possible error styles
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* unexceptionalio and errors libraries
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