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Showing 21 open source projects for "types"

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  • 1
    koka

    koka

    Koka language compiler and interpreter

    Koka is a strongly typed functional-style language with effect types and handlers. The core of Koka consists of a small set of well-studied language features, like first-class functions, a polymorphic type- and effect system, algebraic data types, and effect handlers. Each of these is composable and avoid the addition of “special” extensions by being as general as possible. Koka tracks the (side) effects of every function in its type, where pure and effectful computations are distinguished. ...
    Downloads: 7 This Week
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  • 2
    Agda

    Agda

    Agda is a dependently typed programming language

    ...It has many similarities with other proof assistants based on dependent types, such as Coq, Epigram, Matita and NuPRL.
    Downloads: 6 This Week
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  • 3
    PureScript

    PureScript

    A strongly-typed language that compiles to JavaScript

    ...Excellent tooling and editor support with instant rebuilds. An active community with many learning resources. Build real-world applications using functional techniques and expressive types, such as: Algebraic data types and pattern matching. Row polymorphism and extensible records. Higher kinded types and type classes with functional dependencies, as well as higher-rank polymorphism. Precompiled binaries are available for OSX, Linux, and Windows. The Pursuit package database hosts searchable documentation for PureScript packages. ...
    Downloads: 4 This Week
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  • 4
    LiquidHaskell

    LiquidHaskell

    Liquid Types For Haskell

    This is the development site of the LiquidHaskell formal verification tool. If you're a LiquidHaskell user (or just curious), you probably want to go to the documentation website instead. LiquidHaskell (LH) refines Haskell's types with logical predicates that let you enforce important properties at compile time. LH warns you that head is not total as it is missing the case for [] and checks that it is total on NonEmpty lists. The input contract propagates to uses of head which are verified by ensuring the arguments are NonEmpty. LH lets you avoid off-by-one errors that can lead to crashes or buffer overflows. ...
    Downloads: 0 This Week
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  • 5
    Aeson

    Aeson

    A fast Haskell JSON library

    aeson is a high-performance Haskell library for JSON parsing and encoding, optimized for speed and ease of use. It serves as a foundational tool in the Haskell ecosystem for handling JSON data efficiently. High-performance optimized for real-world workloads. Widely used and well-maintained community library. Compatible with popular frameworks and the Haskell web ecosystem. Easy-to-use API (e.g., FromJSON, ToJSON typeclasses). Fast JSON parsing and serialization.
    Downloads: 0 This Week
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  • 6
    dhall-haskell

    dhall-haskell

    Maintainable configuration files

    Maintainable configuration files. Navigate to each package's directory for their respective READMEs. You can download pre-built binaries for Windows, OS X and Linux on the release page. You can then click the "Help" button in the bottom right corner, which will show you a nix-env command that you can run to install the prebuilt executable. You will probably want to use the shared caches hosted at cache.dhall-lang.org and dhall.cachix.org when doing Nix development. This is not required, but...
    Downloads: 1 This Week
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  • 7
    Hasktorch

    Hasktorch

    Tensors and neural networks in Haskell

    Hasktorch is a powerful Haskell library for tensor computation and neural network modeling, built on top of libtorch (the backend of PyTorch). It brings differentiable programming, automatic differentiation, and efficient tensor operations into Haskell’s strongly typed functional paradigm. This project is in active development, so expect changes to the library API as it evolves. We would like to invite new users to join our Hasktorch discord space for questions and discussions....
    Downloads: 0 This Week
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  • 8
    Servant

    Servant

    Haskell DSL for describing, serving, querying, mocking web apps

    Servant provides a type-level domain-specific language (DSL) in Haskell for describing web APIs. From a single API specification, developers can derive server implementations, client libraries, documentation, and more—ensuring consistency and type safety across the stack. We have a tutorial that introduces the core features of servant. After this article, you should be able to write your first server web services, learning the rest from the haddocks' examples. The core documentation can be...
    Downloads: 0 This Week
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  • 9
    Obelisk

    Obelisk

    Functional reactive web and mobile applications, with batteries

    Functional reactive web and mobile applications, with batteries included. Obelisk's goal is to represent a cohesive, highly-curated set of choices that Obsidian Systems has made for building these types of applications in a way that is extremely fast but does not compromise on production readiness. Obelisk allows you to build high-quality web and mobile applications very quickly using Reflex. In minutes you can go from an empty directory to an interactive application that works on web, iOS, and Android, all sharing the same Haskell codebase! ...
    Downloads: 0 This Week
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  • 10
    LambdaHack

    LambdaHack

    Haskell game engine library for roguelike dungeon crawlers

    ...A couple of frontends are available (SDL2 is the default for desktop and there is a JavaScript browser frontend) and many other generic engine components are easily overridden, but the fundamental source of flexibility lies in the strict and enforced with types separation of engine code from the read-only content and of clients (human and AI-controlled) from the server.
    Downloads: 4 This Week
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  • 11
    Kitten

    Kitten

    A statically typed concatenative systems programming language

    Kitten is an experimental, concatenative programming language that blends Forth/Joy-style stack programming with modern static typing and effect tracking. Programs are composed by chaining small words that transform a typed stack, and the compiler uses type inference to ensure compositions are valid. The language explores disciplined handling of side effects, aiming to separate pure transformations from operations that perform I/O or mutate state. Its design encourages small, reusable...
    Downloads: 0 This Week
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  • 12
    relude

    relude

    Safe, performant, user-friendly and lightweight Haskell library

    ...You can be more productive with a “non-standard” standard library, and relude helps you with writing safer and more efficient code faster. Usage of partial functions can lead to unexpected bugs and runtime exceptions in pure code. The types of partial functions lie about their behaviour. And even if it is not always possible to rely only on total functions, relude strives to encourage best-practices and reduce the chances of introducing a bug.
    Downloads: 3 This Week
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  • 13
    Polysemy

    Polysemy

    Higher-order, no-boilerplate monads

    Polysemy is a high-performance, zero-boilerplate effect system for Haskell, designed to simplify the handling of side effects in functional programs. Unlike traditional monad transformer stacks, Polysemy uses a modern approach based on freer monads and interpreters, allowing developers to define, compose, and interpret effects in a more modular and testable way. It aims to offer both flexibility and performance without sacrificing type safety or expressiveness.
    Downloads: 3 This Week
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  • 14
    GHCJS

    GHCJS

    Haskell to JavaScript compiler, based on GHC

    GHCJS is a Haskell-to-JavaScript compiler that reuses GHC’s front end to compile Haskell source into JavaScript for execution in browsers and Node.js. It aims to preserve Haskell’s semantics—including laziness and rich types—by shipping a small runtime and shims for core libraries. Developers write normal Haskell, use Cabal/Stack to build, then bundle the generated JavaScript alongside required support code. Interoperability with the JavaScript world is provided through a foreign-function interface, allowing Haskell code to call browser APIs or Node modules and to be called back from JS. ...
    Downloads: 0 This Week
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  • 15
    Fission ipfs

    Fission ipfs

    Fission CLI & server

    Seamlessly deploy websites and store secure user data. Fission is built inside of a pure Nix shell via the Stack integration. This means that you should only need to type stack build to do a complete build of all packages. If you're using a nix shell, you can use cachix to prevent re-building dependencies.
    Downloads: 0 This Week
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  • 16
    Carp

    Carp

    A functional, systems programming language with linear types

    Carp is a statically typed, functional programming language designed for real-time and systems programming. It features a Lisp-like syntax, strong compile-time checks, and linear type semantics that ensure memory safety without a garbage collector. Carp targets C as its backend, generating performant and predictable native code while offering functional abstractions and interactive development via REPL.
    Downloads: 4 This Week
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  • 17
    Idris-dev

    Idris-dev

    A Dependently Typed Functional Programming Language

    Idris‑dev is the development version of Idris 1, a general-purpose functional programming language featuring full dependent types, designed for writing type-safe programs and proofs within the language itself. It compiles to C and JavaScript (for Node.js and browsers), and supports code generation via substitute backends. This repository represents the latest development version of the language, and may contain bugs that are being actively worked on. For those who wish to use a more stable version of Idris please consider installing the latest version that has been released on Hackage. ...
    Downloads: 0 This Week
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  • 18
    Unused

    Unused

    A command line tool to identify unused code

    Unused identifies unused code in Rails, Phoenix, and other types of applications, improving developer productivity. By default, unused leverages a different memory allocator called mimalloc. For my local benchmarks, it speeds up execution by a significant amount (which is documented in the commit introducing mimalloc), but currently runs into sporadic issues on Apple M1 devices. If you run into issues with segmentation faults, consider reinstalling unused with the stock Rust allocator. ...
    Downloads: 0 This Week
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  • 19
    Semantic

    Semantic

    Parsing, analyzing, and comparing source code across many languages

    semantic is a Haskell library and command line tool for parsing, analyzing, and comparing source code. Run semantic --help for complete list of up-to-date options. Semantic uses tree-sitter to generate parse trees, but layers in a more generalized notion of syntax terms across all supported programming languages. We'll see why this is important when we get to diffs and program analysis, but for now let's just inspect some output. It helps to have a simple program to parse. Symbols are named...
    Downloads: 1 This Week
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  • 20
    Eta

    Eta

    The Eta Programming Language, a dialect of Haskell on the JVM

    ...Eta offers a wide range of strategies for handling concurrency including Software Transaction Memory (STM), MVars, and Fibers. Using the powerful and type-safe Servant web framework, we define our API as a type and the handler types for each endpoint are automatically generated and conversions happen automatically.
    Downloads: 1 This Week
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  • 21
    Corrode

    Corrode

    C to Rust translator

    Corrode is an experimental translator that converts C code into Rust, intended to help migrate existing C codebases toward safer Rust idioms. It parses C, maps C types and constructs into Rust equivalents, and generates code that compiles under rustc, introducing unsafe only when necessary. The tool seeks to produce readable Rust that a developer can then refine by hand, rather than a perfect one-to-one mechanical translation. It handles common C features such as pointers, structs, enums, arrays, and function calls, while flagging areas that need attention during the migration. ...
    Downloads: 0 This Week
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