[Haskell-cafe] Handling exceptions or gracefully releasing resources

[Thiago Negri]

`Control.Exception.bracket` is a nice function to acquire and release a
resource in a small context.

But, how should I handle resources that are hold for a long time?

Should I put `Control.Exception.finally` on every single line of my
finalizers?
What exceptions may occur on an IO operation?
Every IO function has the risk of throwing an exception?

Thanks,
Thiago.
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