The indextype package
This package deals with types that can roughly be "indexed" at compile time by an integer.
For example, tuples and be indexed by their nth elements, and functions by their nth argument.
A number of type functions allow one to extract these subtypes, i.e. the type of the 2nd element of a given tuple.
Furthermore, constraints are defined which allow one to easily constrain types to these index types,
e.g. a constraint that says "
t is a 3 tuple".
Control.IndexT has more detail.
|Versions||0.1.0.0, 0.2.0.0, 0.2.1.0, 0.2.2.0, 0.2.3.0, 0.3.0.0, 0.3.0.1 (info)|
|Dependencies||base (>=4.9 && <4.11) [details]|
|Copyright||Clinton Mead (2017)|
|Source repository||head: git clone https://github.com/clintonmead/indextype.git|
|Uploaded||Thu Oct 19 03:10:50 UTC 2017 by clinton|
|Downloads||237 total (139 in the last 30 days)|
|Rating||0.0 (0 ratings) [clear rating]|
|Status||Docs available [build log]
Last success reported on 2017-10-19 [all 1 reports]
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