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monad

The monad package provides generics and generic operators for monadic classes. These are:

• fmap(), bind() and join() S7 generic functions.
• %>>% and %>-% pipe operators for fmap() and bind() respectively.

Implementations of the generics are provided for:

• The list built-in type via purrr. See ?List.
• The maybe S3 class from maybe. See ?Maybe.

Implementing classes must provide fmap() and either bind() or join(). Method implementations must satisfy the ?"functor-laws" and ?"monad-laws".

The concepts are modelled directly after the Monad typeclass in the functional programming language Haskell. Operator names and calling conventions have been adapted to fit R.

Installation

Install the current release from CRAN:

install.packages("monad")

Or the development version from GitHub:

# install.packages("pak")
pak::pak("mikmart/monad")

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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