all options
[  bookworm  ] [  trixie  ] [  sid  ]
[ Source: haskell-ghc-typelits-knownnat  ]

Package: libghc-ghc-typelits-knownnat-dev (0.7.9-1 and others)

Links for libghc-ghc-typelits-knownnat-dev

Screenshot

Debian Resources:

Download Source Package haskell-ghc-typelits-knownnat:

Maintainers:

External Resources:

Similar packages:

Derive KnownNat constraints from other KnownNat constraints

A type checker plugin for GHC that can derive "complex" KnownNat constraints from other simple/variable KnownNat constraints. i.e. without this plugin, you must have both a KnownNat n and a KnownNat (n+2) constraint in the type signature of the following function:

f :: forall n . (KnownNat n, KnownNat (n+2)) => Proxy n -> Integer f _ = natVal (Proxy :: Proxy n) + natVal (Proxy :: Proxy (n+2))

Using the plugin you can omit the KnownNat (n+2) constraint:

f :: forall n . KnownNat n => Proxy n -> Integer f _ = natVal (Proxy :: Proxy n) + natVal (Proxy :: Proxy (n+2))

The plugin can derive KnownNat constraints for types consisting of: 

 * Type variables, when there is a corresponding KnownNat constraint


 * Type-level naturals


 * Applications of the arithmetic expression: +,-,*,^


 * Type functions, when there is either:

1. a matching given KnownNat constraint; or

2. a corresponding KnownNat<N> instance for the type function

To use the plugin, add the

OPTIONS_GHC -fplugin GHC.TypeLits.KnownNat.Solver

Pragma to the header of your file.

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

Other Packages Related to libghc-ghc-typelits-knownnat-dev

  • depends
  • recommends
  • suggests
  • enhances

Download libghc-ghc-typelits-knownnat-dev

Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 0.7.9-1+b1 98.1 kB948.0 kB [list of files]
amd64 0.7.9-1+b2 68.5 kB489.0 kB [list of files]
arm64 0.7.9-1+b2 68.5 kB620.0 kB [list of files]
armel 0.7.9-1+b3 69.1 kB547.0 kB [list of files]
armhf 0.7.9-1+b3 68.0 kB538.0 kB [list of files]
hppa (unofficial port) 0.7.9-1+b4 128.5 kB978.0 kB [list of files]
i386 0.7.9-1+b2 103.3 kB639.0 kB [list of files]
ia64 (unofficial port) 0.7.9-1+b2 106.9 kB1,835.0 kB [list of files]
m68k (unofficial port) 0.7.9-1 99.8 kB710.0 kB [list of files]
mips64el 0.7.9-1+b2 90.4 kB930.0 kB [list of files]
ppc64 (unofficial port) 0.7.9-1+b2 86.8 kB965.0 kB [list of files]
ppc64el 0.7.9-1+b2 89.3 kB852.0 kB [list of files]
riscv64 0.7.9-1+b2 98.8 kB965.0 kB [list of files]
s390x 0.7.9-1+b2 85.4 kB886.0 kB [list of files]
sparc64 (unofficial port) 0.7.9-1+b1 106.2 kB1,308.0 kB [list of files]