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The following tools were used to implement the calculator
- Gofer is a small, freely available interpreted language which is
closely related to Haskell 1.1, written by Mark P. Jones.
- HUGS is the Nottingham and Yale Haskell User's (Gofer) System. It is
an interpreted version of Haskell 1.4, the successor of Gofer, and
freely available for personal or educational purposes from
- Glasgow Haskell Compiler:
- The Glasgow Haskell Compiler (GHC) is a compiler for Haskell
1.4. Available with the Glasgow Haskell Compiler is a profiling
system and the parsing tool ``Happy''. The Glasgow Haskell Compiler
is freely available from
http://www.dcs.gla.ac.uk/fp/software/ghc/. The binaries
produced by the GHC are significantly faster than the same code
executing within HUGS, although the compilation process can be
extremely time consuming.
- Happy is a parser generator similar to the unix Tool
automatically generates code to parse a specified language.
- Alex is a
lex like package for generating Haskell scanners. It
is available from http://www.cs.ucc.ie/ dornan/alex.html, and
its release is covered by a GNU public licence.