capnp alternatives and similar packages
Based on the "Data" category.
Alternatively, view capnp alternatives based on common mentions on social networks and blogs.
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lens
Lenses, Folds, and Traversals - Join us on web.libera.chat #haskell-lens -
semantic-source
Parsing, analyzing, and comparing source code across many languages -
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code-builder
Packages for defining APIs, running them, generating client code and documentation. -
text
Haskell library for space- and time-efficient operations over Unicode text. -
compendium-client
Mu (μ) is a purely functional framework for building micro services. -
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cassava
A CSV parsing and encoding library optimized for ease of use and high performance -
holmes
A reference library for constraint-solving with propagators and CDCL. -
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primitive
This package provides various primitive memory-related operations. -
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resource-pool
A high-performance striped resource pooling implementation for Haskell -
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discrimination
Fast linear time sorting and discrimination for a large class of data types -
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dependent-map
Dependently-typed finite maps (partial dependent products) -
dependent-sum
Dependent sums and supporting typeclasses for comparing and displaying them -
IORefCAS
A collection of different packages for CAS based data structures. -
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streaming
An optimized general monad transformer for streaming applications, with a simple prelude of functions -
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orgmode-parse
Attoparsec parser combinators for parsing org-mode structured text! -
reflection
Reifies arbitrary Haskell terms into types that can be reflected back into terms -
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scientific
Arbitrary-precision floating-point numbers represented using scientific notation
Collect and Analyze Billions of Data Points in Real Time
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README
A Haskell library for the Cap'N Proto Cerialization and RPC protocol.
Getting Started
There is a module Capnp.Tutorial which contains an introduction
to the library; users are strongly encouraged to read this first, as
the reference documentation can be bewildering without that context.
Status
Serialization support works, with some limitations:
- Generated schema currently ignore type parameters (#29).
- We do not support defining custom default values for fields of pointer type; see (#28).
- We currently do not correctly handle decoding lists of structs from non-composite lists (#27). This means that, contrary to the protocol evolution rules, it is not safe to change a field from type List(T) (where T is any non-struct type) to a list of a struct type.
Level 1 RPC support is implemented and usable, though there are a couple gaps in the API. It should be considered alpha quality for now. Specific things to be aware of:
- The implementation is not robust against resource exhaustion attacks; for now users are strongly discouraged from using it to do RPC with untrusted peers.
- While most of the machinery for it is in place, the API does not currently expose a way to do field projection on remote promises. As a consequence, actually pipelining method calls is not currently possible, so the library is currently best suited to environments which are already low-latency.
The API is considered unstable. It will likely see changes, for the sake of polish, consistency, etc. as well as to improve performance and accommodate more features as we add them.