applicative-numbers

Applicative-based numeric instances http://haskell.org/haskellwiki/applicative-numbers

Latest on Hackage:0.1.3

This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.

BSD3 licensed by Conal Elliott
Maintained by conal@conal.net

Any applicative functor can be given numeric instances in a boilerplate way. The applicative-numbers package provides an include file that makes it a snap to define these instances. See Data.Numeric.Function for an example.

Project wiki page: http://haskell.org/haskellwiki/applicative-numbers

Copyright 2009-2013 Conal Elliott; BSD3 license.

Instances of Num classes for applicative functors. To be #include'd after defining APPLICATIVE as the applicative functor name and CONSTRAINTS as a list of constraints, which must carry its own trailing comma if non-empty. The APPLICATIVE symbol gets #undef'd at the end of the include file, so that multiple includes are convenient.

For instance,

#define INSTANCE_Ord
#define INSTANCE_Enum

#define APPLICATIVE Vec2
#include "ApplicativeNumeric-inc.hs"

#define APPLICATIVE Vec3
#include "ApplicativeNumeric-inc.hs"

#define APPLICATIVE Vec4
#include "ApplicativeNumeric-inc.hs"

You'll also have to import pure and liftA2 from Control.Applicative and specify the FlexibleContexts language extension (due to an implementation hack).

Some instances are generated only if a corresponding CPP symbol is defined: INSTANCE_Eq, INSTANCE_Ord, INSTANCE_Show, INSTANCE_Enum

Depends on:
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