The transformers package
A portable library of functor and monad transformers, inspired by the paper "Functional Programming with Overloading and Higher-Order Polymorphism", by Mark P Jones, in Advanced School of Functional Programming, 1995 (http://web.cecs.pdx.edu/~mpj/pubs/springschool.html).
This package contains:
the monad transformer class (in Control.Monad.Trans.Class) and IO monad class (in Control.Monad.IO.Class)
concrete functor and monad transformers, each with associated operations and functions to lift operations associated with other transformers.
The package can be used on its own in portable Haskell code, in which case operations need to be manually lifted through transformer stacks (see Control.Monad.Trans.Class for some examples). Alternatively, it can be used with the non-portable monad classes in the mtl or monads-tf packages, which automatically lift operations introduced by monad transformers through other transformers.
Properties
| Versions | 0.0.0.0, 0.0.1.0, 0.1.0.0, 0.1.0.1, 0.1.1.0, 0.1.3.0, 0.1.4.0, 0.2.0.0, 0.2.1.0, 0.2.2.0, 0.2.2.1, 0.3.0.0, 0.4.0.0, 0.4.1.0 (info) |
|---|---|
| Dependencies | base (>=1.0 && <2), special-functors (==1.0.*) or base (>=2 && <6) |
| License | BSD3 |
| Author | Andy Gill, Ross Paterson |
| Maintainer | Ross Paterson <ross@soi.city.ac.uk> |
| Category | Control |
| Source repository | head: darcs get http://code.haskell.org/~ross/transformers |
| Upload date | Tue May 6 23:52:16 UTC 2014 |
| Uploaded by | RossPaterson |
| Distributions | Debian:0.3.0.0, Fedora:0.3.0.0, FreeBSD:0.3.0.0, NixOS:0.4.1.0 |
| Downloads | 130239 total (18128 in last 30 days) |
Modules
- Control
- Applicative
- Monad
- IO
- Control.Monad.Signatures
- Trans
- Data
[Index]
Flags
| Name | Description | Default |
|---|---|---|
| applicativeinbase | Use the current base package, including Applicative and other Functor classes. | Enabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- transformers-0.4.1.0.tar.gz [browse] (Cabal source package)
- Package description (included in the package)
Maintainers' corner
For package maintainers and hackage trustees