In this recipe, we will work with Glasgow Haskell Compiler (GHC) and its interpreter GHCi. Then, we will write our first Haskell program and run it in the interpreter.
We will use GHC throughout the book. GHC (https://www.haskell.org/ghc/) is the most widely used Haskell compiler. GHC supports Haskell 2010 language specifications (https://wiki.haskell.org/Definition). The current book is based on Haskell 2010 specifications. GHC supports an extensive range of language extensions.