Пакунок: libghc-enumerator-dev (0.4.19-1 and others)

[ Source: haskell-enumerator  ]

high-performance left-fold enumerators

This package provides a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.

Typical buffer–based incremental I/O is based around a single loop, which reads data from some source (such as a socket or file), transforms it, and generates one or more outputs (such as a line count, HTTP responses, or modified file). Although efficient and safe, these loops are all single–purpose; it is difficult or impossible to compose buffer–based processing loops.

Haskell's concept of "lazy I/O" allows pure code to operate on data from an external source. However, lazy I/O has several shortcomings. Most notably, resources such as memory and file handles can be retained for arbitrarily long periods of time, causing unpredictable performance and error conditions.

Enumerators are an efficient, predictable, and safe alternative to lazy I/O. Discovered by Oleg Kiselyov, they allow large datasets to be processed in near–constant space by pure code. Although somewhat more complex to write, using enumerators instead of lazy I/O produces more correct programs.

This library contains an enumerator implementation for Haskell, designed to be both simple and efficient. Three core types are defined, along with numerous helper functions:

Iteratee: Data sinks, analogous to left folds. Iteratees consume a sequence of input values, and generate a single output value. Many iteratees are designed to perform side effects (such as printing to stdout), so they can also be used as monad transformers.

Enumerator: Data sources, which generate input sequences. Typical enumerators read from a file handle, socket, random number generator, or other external stream. To operate, enumerators are passed an iteratee, and provide that iteratee with input until either the iteratee has completed its computation, or EOF.

Enumeratee: Data transformers, which operate as both enumerators and iteratees. Enumeratees read from an outer enumerator, and provide the transformed data to an inner iteratee.

Інші пакунки пов'язані з libghc-enumerator-dev

• dep: libc6 (>= 2.13-28)

  Вбудовуванні бібліотеки GNU Сі — спільні бібліотеки
  also a virtual package provided by libc6-udeb

• dep: libffi5 (>= 3.0.9)

  Бібліотека інтерфейсу до сторонніх функцій — виконавчі файли

• dep: libgcc1 (>= 1:4.4.0)

  Допоміжна бібліотека GCC

• dep: libghc-base-dev-4.5.0.0-d93df

  virtual package provided by ghc

• dep: libghc-bytestring-dev-0.9.2.1-e17f0

  virtual package provided by ghc

• dep: libghc-containers-dev-0.4.2.1-7c545

  virtual package provided by ghc

• dep: libghc-text-dev-0.11.2.0-05a46

  virtual package provided by libghc-text-dev

• dep: libghc-transformers-dev-0.3.0.0-e8222

  virtual package provided by libghc-transformers-dev

• dep: libgmp10

  Арифметична бібліотека багатоточності

• sug: libghc-enumerator-doc

  high-performance left-fold enumerators; documentation

• sug: libghc-enumerator-prof

  high-performance left-fold enumerators; profiling libraries

Завантажити libghc-enumerator-dev

Завантаження для всіх доступних архітектур

Архітектура	Версія	Розмір пакунка	Розмір після встановлення	Файли
armhf	0.4.19-1+b1	721.0 kB	3,239.0 kB	[список файлів]