Git annex hackage series#The committee's efforts resulted in a series of language definitions (1.0, 1.1, 1.2, 1.3, 1.4). The first version of Haskell ("Haskell 1.0") was defined in 1990. Other notable changes in early versions were the approach to the `seq` function, which creates a data dependency between values, and it used in lazy languages to avoid excessive memory consumption with it moving from a type class to a standard function to make refactoring more practical. Along with "do notation", which provide syntactic sugar for the Monad type class, this gave Haskell an effect system which maintained referential transparency and was convenient. In version 1.3, monadic IO was introduced, along with the generalisation of type classes to higher kinds (type constructors). In early versions of Haskell up until and including version 1.2, user interaction and IO (input and output) were handled by both streams based and continuation based mechanisms which were widely considered unsatisfactory. Type classes, which enable type-safe operator overloading, were first proposed by Philip Wadler and Stephen Blott address the ad-hoc handling of equality types and arithmetic overloading in languages at the time. Haskell was developed by a committee, attempting to bring together off the shelf solutions where possible. The committee's purpose was to consolidate existing functional languages into a common one to serve as a basis for future research in functional-language design. At the conference on Functional Programming Languages and Computer Architecture (FPCA '87) in Portland, Oregon, there was a strong consensus that a committee be formed to define an open standard for such languages. Miranda was the most widely used, but it was proprietary software. By 1987, more than a dozen non- strict, purely functional programming languages existed. in 1985, interest in lazy functional languages grew. Git annex hackage software#įollowing the release of Miranda by Research Software Ltd. Git annex hackage code#As of May 2021, Haskell was the 28th most popular programming language by Google searches for tutorials, and made up less than 1% of active users on the GitHub source code repository. Haskell is used in academia and industry. The last formal specification of the language was made in July 2010, while the development of GHC continues to expand Haskell via language extensions. Haskell's semantics are historically based on those of the Miranda programming language, which served to focus the efforts of the initial Haskell working group. It is named after logician Haskell Curry. Haskell's main implementation is the Glasgow Haskell Compiler (GHC). Designed for teaching, research and industrial applications, Haskell has pioneered a number of programming language features such as type classes, which enable type-safe operator overloading, and monadic IO. Haskell ( / ˈ h æ s k əl/ ) is a general-purpose, statically-typed, purely functional programming language with type inference and lazy evaluation. Clean, FP, Gofer, Hope and Hope +, Id, ISWIM, KRC, Lisp, Miranda, ML and Standard ML, Orwell, SASL, Scheme, SISAL Īgda, Bluespec, C++11/ Concepts, C#/ LINQ, CAL, Cayenne, Clean, Clojure, CoffeeScript, Curry, Elm, Epigram, Escher, F#, Hack, Idris, Isabelle, Java/ Generics, LiveScript, Mercury, Ωmega, PureScript, Python, Raku, Rust, Scala, Swift, Visual Basic 9.0
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