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Pipes-Safe

pipes-safe builds upon the pipes library to provide exception safety and resource management.

Quick start

• Install the Haskell Platform
• cabal install pipes-safe

The official tutorial is on Hackage.

Features

• Resource Safety: Guarantee finalization using finally, bracket, and more

• Exception Safety: Even against asynchronous exceptions!

• Laziness: Only acquire resources when you need them

• Promptness: Finalize resources early when you are done with them

• Native Exception Handling: Catch and resume from exceptions inside pipes

• No Buy-in: Mix resource-safe pipes with unmanaged pipes using hoist

Outline

Use pipes-safe for production code where you need deterministic and prompt release of resources in the fact of exceptions or premature pipe termination. pipes-safe lets you safely acquire resources and handle exceptions within pipelines.

Development Status

pipes-safe is mostly stable. Research into prompter finalization alternatives will take place in a separate library.

Community Resources

Use the same resources as the core pipes library to learn more, contribute, or request help:

• Haskell wiki page

• Mailing list (Google Group)

How to contribute

• Build derived libraries

• Write pipes-safe tutorials

License (BSD 3-clause)

Copyright (c) 2013 Gabriel Gonzalez All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

• Neither the name of Gabriel Gonzalez nor the names of other contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.