Popularity
1.1
Declining
Activity
0.0
Stable
1
1
0
Monthly Downloads: 2
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
tangle alternatives and similar packages
Based on the "Monads" category.
Alternatively, view tangle alternatives based on common mentions on social networks and blogs.
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colorful-monoids
colorful-monoids: Styled console text output using ANSI escape sequences -
safer-file-handles-text
Extends safer-file-handles with Text operations -
safer-file-handles-bytestring
Extends safer-file-handles with ByteString operations
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README
tangle
This package implements an abstraction of record construction where each field may depend on other fields.
evalTangleT :: TangleT t m a -- ^ computation
-> t (TangleT t m) -- ^ collection of tangles
-> t Maybe -- ^ initial fields (usually all Nothing)
-> m a
hitch
:: Monad m
=> (forall h. Lens' (t h) (h a)) -- ^ the lens of the field
-> TangleT t m a
A computation tangle is a higher-kinded record of Tangle t m. Each field can fetch other fields by using hitch; the result is memoised so the computation is performed only once for each field. Recursive hitch is not supported.
See examples/weight.hs for an example.