Haskell High Performance Programming

Control and utility libraries

The libraries in this subsection are as follows:

• conduit, io-streams, and pipes: General streaming libraries, that avoid problems with lazy IO
• lens: Solving the "nested record update" problem in a "batteries included" fashion
• convertible: Conversions between types using a single function without information loss
• basic-prelude, classy-prelude: Prelude alternatives that encourage best practices in modern Haskell
• chunked-data: Class abstractions to different builders, zipping, and reading and writing to files and handles

Streaming libraries are generally aimed at countering problems with lazy IO. Refer to Chapter 6, I/O and Streaming, for an in-depth discussion about problems with lazy IO and Haskell streaming libraries.