interval-functor alternatives and similar packages
Based on the "Data" category.
Alternatively, view interval-functor alternatives based on common mentions on social networks and blogs.
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README
interval-functor
[
](LICENSE)
This is a Haskell package defining an Interval datatype parameterized by the type of endpoints and the type of their coordinates. For example, it can represent a simple one-dimensional range:
import Data.Functor.Identity
import Data.Functor.Interval
zeroInterval :: Num a => Interval Identity a
zeroInterval = point 0
or a multi-dimensional region:
import Data.Functor.Interval
import Linear.V3 -- from the linear package
unitCube :: Num a => Interval V3 a
unitCube = (-1)...1
Development
Development currently assumes a Mac with ghc 8.10 & cabal 3.0. You can install them directly, or use ghcup. It should be possible to develop on other platforms and compilers, but I probably haven’t tried them myself.
cabal build --enable-tests # initial build
script/repl # load the library and tests in ghci
Once the repl has loaded, you can run the tests with :main.
λ :main
Configuration exists for ghcide, which can be integrated into many editors.
Advantages
interval-functor separates the representation of the coordinates of an interval from the representation of the space the coordinates occur in. This makes it particularly suitable for consistent treatment of multi-dimensional intervals; operations like e.g. union extend naturally to multi-dimensional spaces.
It is also thoroughly property tested and documented.
*Note that all licence references and agreements mentioned in the interval-functor README section above
are relevant to that project's source code only.