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to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
Hugs deviates from the Haskell 98 specification [2] in several minor ways. [3] For example, Hugs does not support mutually recursive modules. A list of differences exists. [4] The Hugs prompt is a Haskell read–eval–print loop (REPL). It accepts expressions for evaluation, but not module, type, or function definitions.
The Glasgow Haskell Compiler (GHC) is a native or machine code compiler for the functional programming language Haskell. [5] 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.
Gofer (Good for equational reasoning) is an implementation of the programming language Haskell intended for educational purposes and supporting a language based on version 1.2 of the Haskell report. It was replaced by Hugs. [1] Its syntax is closer to the earlier commercial language Miranda than the subsequently
The "Curry" in "Currying" is a reference to logician Haskell Curry, who used the concept extensively, but Moses Schönfinkel had the idea six years before Curry. [10] The alternative name "Schönfinkelisation" has been proposed. [15] In the mathematical context, the principle can be traced back to work in 1893 by Frege. [4] [5]
In Haskell this is the foldl' (note the apostrophe, pronounced 'prime') function in the Data.List library (one needs to be aware of the fact though that forcing a value built with a lazy data constructor won't force its constituents automatically by itself). Combined with tail recursion, such folds approach the efficiency of loops, ensuring ...
This extension was specified in an addendum to Haskell 98 and was in practice universally used. The foreign function interface (FFI) allows bindings to other programming languages. Only bindings to C are specified in the Report, but the design allows for other language bindings.
In the § More complex examples section above, calc is used in two senses, showing that there is a Haskell type class namespace and also a namespace for values: a Haskell type class for calc. The domain and range can be explicitly denoted in a Haskell type class. a Haskell value, formula, or expression for calc.