Hoogle Search
Within LTS Haskell 24.34 (ghc-9.10.3)
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List shuffling and sampling List shuffling and sampling with optimal asymptotic time and space complexity using the imperative Fisher–Yates algorithm.
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transform literate source code to Markdown This package provides a library as well as a command-line utility that transforms literate source code to Markdown. Please see the README on GitHub at https://github.com/ExtremaIS/literatex-haskell#readme.
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Load environment variables from a file. Parse a .env file and load any declared variables into the current process's environment. This allows for a .env file to specify development-friendly defaults for configuration values normally set in the deployment environment.
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Support for precise error locations in source files (Template Haskell version) This module provides a Template Haskell based mechanism to tag failures with the location of the failure call. The location message includes the file name, line and column numbers.
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Michael and Scott lock-free queues. Michael and Scott queues are described in their PODC 1996 paper: http://dl.acm.org/citation.cfm?id=248052.248106 These are single-ended concurrent queues based on a singlly linked list and using atomic CAS instructions to swap the tail pointers. As a well-known efficient algorithm they became the basis for Java's ConcurrentLinkedQueue.
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Structured logging solution (base package) A library that provides a way to record structured log messages. Use this package in conjunction with 'log-elasticsearch' or 'log-postgres', depending on which back end you need.
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Logstash client library for Haskell Please see the README on GitHub at https://github.com/mbg/logstash#readme
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LPeg – Parsing Expression Grammars For Lua This package contains the C sources of LPeg, as well as some tiny Haskell helper to load the package. http://www.inf.puc-rio.br/~roberto/lpeg/
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a simple, pure LRU cache This package contains a simple, pure LRU cache, implemented in terms of Data.Map. It also contains a mutable IO wrapper providing atomic updates to an LRU cache.
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Trek through your code forest and make logs This is a logging facility. Yes, there are many, and this is the one with a beard, wearing flannel and boots, that gets the job done. It's not the fanciest, it doesn't have a cargo-van full of features. This logger is designed to be straightforward to use, provide a good set of standard features, and be useable across a broad set of code.
- Logging itself is a monadic activity. This activity is most often performed in a monad stack with a MonadIO context to allow writing to files.
- The specific logging action implementations are managed separately from the actions of logging messages in the target code. This allows logging to be configurable and the manner of logging to be specified at startup time without requiring changes in the code from which log messages are being generated.
- The logging implementation code can use contravariant functors to adjust existing logging.
- Main code will typically retrieve the logging actions from a Reader context in your monad stack. That said, Log actions are not tied to an enclosing Monad. There are helpers to support a Monad which can store Log actions, but Log actions can also be explicitly passed and used.
- The prettyprinter package is used for formatting.