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package time

A time library Time, clocks and calendars
package vector

Efficient Arrays . An efficient implementation of Int-indexed arrays (both mutable and immutable), with a powerful loop optimisation framework . . It is structured as follows: . [Data.Vector] Boxed vectors of arbitrary types. . [Data.Vector.Unboxed] Unboxed vectors with an adaptive representation based on data type families. . [Data.Vector.Storable] Unboxed vectors of Storable types. . [Data.Vector.Primitive] Unboxed vectors of primitive types as defined by the primitive package. Data.Vector.Unboxed is more flexible at no performance cost. . [Data.Vector.Generic] Generic interface to the vector types. . There is also a (draft) tutorial on common uses of vector. . * http://haskell.org/haskellwiki/Numeric_Haskell:_A_Vector_Tutorial
package aeson

Fast JSON parsing and encoding A JSON parsing and encoding library optimized for ease of use and high performance. To get started, see the documentation for the Data.Aeson module below. (A note on naming: in Greek mythology, Aeson was the father of Jason.)
package directory

Platform-agnostic library for filesystem operations This library provides a basic set of operations for manipulating files and directories in a portable way.
package template-haskell

Support library for Template Haskell This package provides modules containing facilities for manipulating Haskell source code using Template Haskell. See http://www.haskell.org/haskellwiki/Template_Haskell for more information.
package filepath

Library for manipulating FilePaths in a cross platform way. This package provides functionality for manipulating FilePath values, and is shipped with GHC. It provides two variants for filepaths:
1. legacy filepaths: type FilePath = String
2. operating system abstracted filepaths (OsPath): internally unpinned ShortByteString (platform-dependent encoding)
It is recommended to use OsPath when possible, because it is more correct. For each variant there are three main modules:
- System.FilePath.Posix / System.OsPath.Posix manipulates POSIX/Linux style FilePath values (with / as the path separator).
- System.FilePath.Windows / System.OsPath.Windows manipulates Windows style FilePath values (with either \ or / as the path separator, and deals with drives).
- System.FilePath / System.OsPath for dealing with current platform-specific filepaths
For more powerful string manipulation of OsPath, you can use the os-string package (OsPath is a type synonym for OsString). An introduction into the new API can be found in this blog post. Code examples for the new API can be found here.
package tasty-hunit

HUnit support for the Tasty test framework. HUnit support for the Tasty test framework. Note that this package does not depend on HUnit but implements the relevant subset of its API. The name is a legacy of the early versions of tasty-hunit and of test-framework-hunit, which did depend on HUnit.
package unordered-containers

Efficient hashing-based container types Efficient hashing-based container types. The containers have been optimized for performance critical use, both in terms of large data quantities and high speed. The declared cost of each operation is either worst-case or amortized, but remains valid even if structures are shared. Security This package currently provides no defenses against hash collision attacks such as HashDoS. Users who need to store input from untrusted sources are advised to use Data.Map or Data.Set from the containers package instead.
package HUnit

A unit testing framework for Haskell HUnit is a unit testing framework for Haskell, inspired by the JUnit tool for Java, see: http://www.junit.org.
package tasty-quickcheck

QuickCheck support for the Tasty test framework. QuickCheck support for the Tasty test framework.

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