Hugs 98 (March2005) review

Hugs 98 is a functional programming system based on Haskell 98, the de facto standard for non-strict functional programming languages

License: BSD License File size: 4106K Developer: Mark P Jones, Alastair Reid and the Yale Haskell G

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Hugs 98 is a functional programming system based on Haskell 98, the de facto standard for non-strict functional programming languages. Hugs 98 provides an almost complete implementation of Haskell 98, including:

Lazy evaluation, higher order functions, and pattern matching.
A wide range of built-in types, from characters to bignums, and lists to functions, with comprehensive facilities for defining new datatypes and type synonyms.
An advanced polymorphic type system with type and constructor class overloading.
All of the features of the Haskell 98 expression and pattern syntax including lambda, case, conditional and let expressions, list comprehensions, do-notation, operator sections, and wildcard, irrefutable and `as' patterns.
An implementation of the Haskell 98 primitives for monadic I/O, with support for simple interactive programs, access to text files, handle-based I/O, and exception handling.
An almost complete implementation of the Haskell module system. Hugs 98 also supports a number of advanced and experimental extensions including multi-parameter classes, extensible records, rank-2 polymorphism, existentials, scoped type variables, and restricted type synonyms.