The sousit package

[Tags: bsd3, library]

Haskell library for Sources, Sinks and Transformers. The data is pushed from the source through the transfomers into the sink. The sink or a transfomer can decide at any time to end the transfer (see Iteratees). The transformers are very reusable since they can not depend on side effects, so they can be used with files as well as with simple lists.

Allows you to build pipelines such as:

>>> listSource [1..10] $$ T.map(+1) =$= T.buffer 3 0 (+) =$ listSink [9,18,27,11]

its possible to mix various type of sources and sinks, such as in:

>>> fileSourceLine \"myfile.txt\" $$ T.drop 1 =$= T.map (++ "!") =$ listSink [\"Hello Mario!\", \"How're you doing?!\"]

For more documentation see <https://github.com/msiegenthaler/SouSiT>.


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Properties

Versions0.3, 0.4
Change logNone available
Dependenciesbase (>4 && <5), bytestring, cereal, mtl, resourcet, stm, transformers [details]
LicenseBSD3
Copyright(c) 2012 Mario Siegenthaler
AuthorMario Siegenthaler
Maintainermsiegenthaler@inventsoft.ch
CategoryControl
Home pagehttps://github.com/msiegenthaler/SouSiT
Source repositoryhead: git clone git://github.com/msiegenthaler/SouSiT.git
UploadedSat Sep 15 20:40:18 UTC 2012 by MarioSiegenthaler
DistributionsNixOS:0.4
Downloads328 total (15 in last 30 days)
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StatusDocs uploaded by user
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Readme for sousit-0.3

SouSiT

Haskell library for Sources, Sinks and Transformers. The data is pushed from the source through the transfomers into the sink. The sink or a transfomer can decide at any time to end the transfer (see Iteratees). The transformers are very reusable since they can not depend on side effects, so they can be used with files as well as with simple lists.

Allows you to build pipelines such as:

ghci> listSource [1..10] $$ T.map(+1) =$= T.buffer 3 0 (+) =$ listSink
[9,18,27,11]

its possible to mix various type of sources and sinks, such as in:

ghci> fileSourceLine "myfile.txt" $$ T.drop 1 =$= T.map (++ "!") =$ listSink
["Hello Mario!", "How're you doing?!"]

Available Sources

More types of sources can be added by users of the library. Consider using actionSource or bracketActionSource as a help if you do so.

Available Sinks

More types of sinks can be added by users of the library. Consider using either actionSink or the monadic sink interface if implementing your own sinks.

Monadic Sink

You can write sink in monad style

Example that reads the first input, then skips the next three values and then reads two values and terminates. It outputs a tuple with the three values read.

mySink = do v1 <- input
            skip 3
            v2 <- input
            v3 <- input
            return (v1, v2, v3)