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Haskell (/ ˈ h æ s k əl /) is a general-purpose, statically-typed, purely functional programming language with type inference and lazy evaluation. [26] [27] 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 ...
List comprehension. A list comprehension is a syntactic construct available in some programming languages for creating a list based on existing lists. It follows the form of the mathematical set-builder notation ( set comprehension) as distinct from the use of map and filter functions.
Playground Access PHP Ruby/Rails Python/Django SQL Other dbfiddle : Free No No No Yes Db2, Firebird, MariaDB, MySQL, Node.js, Oracle, Postgres, SQL Server, SQLite, YugabyteDB
Scala at Wikibooks. Scala ( / ˈskɑːlɑː / SKAH-lah) [7] [8] is a strong statically typed high-level general-purpose programming language that supports both object-oriented programming and functional programming. Designed to be concise, [9] many of Scala's design decisions are intended to address criticisms of Java. [6]
The Glasgow Haskell Compiler ( GHC) is a native or machine code compiler for the functional programming language Haskell. [4] It provides a cross-platform software environment for writing and testing Haskell code and supports many extensions, libraries, and optimisations that streamline the process of generating and executing code.
Haskell allows indentation to be used to indicate the beginning of a new declaration. For example, in a where clause: product xs = prod xs 1 where prod [] a = a prod (x:xs) a = prod xs (a*x) The two equations for the nested function prod are aligned vertically, which allows the semi-colon separator to be omitted.
Perl, Ruby, Smalltalk, Haskell, [4] JavaScript. Influenced. Perl, [5] Haskell, [5] AntLang. Raku is a member of the Perl family of programming languages. [6] Formerly known as Perl 6, it was renamed in October 2019. [7] [8] Raku introduces elements of many modern and historical languages.
Programming languages can succeed or fail based on the breadth and quality of their library collection. [3] The Haskell Platform aims to unify Haskell development tools into a single package, consisting of a compiler, compiling tools and many standard libraries, therefore making it easier to develop and deploy full-featured Haskell-driven ...