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README
Quiver
Copyright © 2015 Patryk Zadarnowski «[email protected]».
All rights reserved.
Quiver is a powerful stream processing library for combinatorial and monadic representation of computations over both inductive and coinductive data streams.
It is similar to Gabriel Gonzalez's pipes and Michael Snoyman's conduit, but generalises both with support for functor-based computations and a clean support for finite (i.e., inductive) data streams, both upstream and downstream of the computation being defined.
The underlying data structure, P
, is almost identical
to the Proxy
data structure of the Pipes
library,
except that the Consume
and Produce
constructors
(corresponding, respectively, to Request
and Response
in the Pipes' Proxy
data type) include an additional
argument which explicitly captures the processor's
behaviour in the event of input stream depletion
(for Consume
) or output decoupling (for Produce
).
This simple mechanism subsumes Conduit's need for
elaborate unconsumed-input tracking mechanisms,
and allows us to provide a mathematically-clean
framework for processing of finite data streams.
This library is currently very young, and users should expect significant changes to the Quiver core combinators as the underlying theory is developed and the interface stabilises asymptotically to the future version 1.0.