Safe Haskell	Trustworthy
Language	Haskell2010

Universum

Contents

Reexports from base and from modules in this repo
Lenses

Description

Main module that reexports all functionality allowed to use without importing any other modules. Just add next lines to your module to replace default Prelude with better one.

{-# LANGUAGE NoImplicitPrelude #-}

import Universum

This documentation section contains description of internal module structure to help navigate between modules, search for interesting functionalities and understand where you need to put your new changes.

Functions and types are distributed across multiple modules and grouped by meaning or theme. Name of the module should give you hints regarding what this module contains. Some themes contain a great amount of both reexported functions and functions of our own. To make it easier to understand these huge chunks of functions, all reexported stuff is moved into separate module with name Universum.SomeTheme.Reexport and our own functions and types are in Universum.SomeTheme.SomeName. For example, see modules Universum.Container.Class and Universum.Container.Reexport.

Below is a short description of what you can find under different modules:

Universum.Applicative: reexports from Control.Applicative and some general-purpose applicative combinators.
Universum.Base: different general types and type classes from base package (Int, Num, Generic, etc.) not exported by other modules.
Universum.Bool: Bool data type with different predicates and combinators.
Universum.Container: Foldable replacement, types from containers and unordered-containers and vector packages.
Universum.Debug: trace-like debugging functions with compile-time warnings (so you don't forget to remove them)
Universum.DeepSeq: reexports from Control.DeepSeq module and functions to evaluate expressions to weak-head normal form or normal form.
Universum.Exception: reexports Control.Exception.Safe from safe-exceptions package, bug as better error, Exc pattern synonym for convenient pattern-matching on exceptions.
Universum.Function: almost everything from Data.Function module.
Universum.Functor: reexports from Data.Functor, Data.Bifunctor, other useful Functor combinators.
Universum.Lifted: lifted to MonadIO functions to work with console, files, IORefs, MVars, etc.
Universum.List: big chunk of Data.List, NonEmpty type and functions for this type (head, tail, last, init).
Universum.Monad: monad transormers, combinators for Maybe and Either.
Universum.Monoid: reexports from Data.Monoid and Data.Semigroup.
Universum.Nub: better versions of nub function for list.
Universum.Print: polymorphic putStrLn function and functions to print Text.
Universum.String: reexports from text and bytestring packages with conversion functions between different textual types.
Universum.TypeOps: convenient and fancy type-level operators.
Universum.Unsafe: unsafe functions (produce error). Not exported by Universum module by default.
Universum.VarArg: variadic composition operator ....