If you want to contribute to Matterhorn but are new to Haskell, it will be important to make sure that you have comfort with a number of Haskell concepts in order to contribute successfully. Here are general Haskell topics that it will be important to have comfort with:
- Haddock syntax
- Let vs. Where
- Record types (
Foo { field1 :: Ty, field2 :: Ty, ... }) - Monads (IO, Maybe, list, Either, State, Reader), "do" notation, combinators ">>=" and ">>"
- Monad Transformers (StateT, MaybeT, ErrorT, ReaderT)
Control.Monad- Type class instance derivation via
deriving - Applicative functor operations (
fmap,<$>,<*>,pure) - Collection types (Data.Map, Data.HashMap, Data.Set, Data.Sequence)
- File I/O (System.IO)
- Argument parsing
- Error-handling
- Exceptions: https://hackage.haskell.org/package/base-4.12.0.0/docs/Control-Exception.html
- General strategies for handling errors: http://book.realworldhaskell.org/read/error-handling.html
- Concurrent programming:
- Lenses: https://hackage.haskell.org/package/lens-tutorial-1.0.4/docs/Control-Lens-Tutorial.html
- Working with processes: http://hackage.haskell.org/package/process-1.6.8.2/docs/System-Process.html
- Data.Text: higher-performance and more general alternative to the built-in String type from the Prelude: http://hackage.haskell.org/package/text
- Type classes: the creation of new type classes and instances
- Vty library for building terminal applications: http://hackage.haskell.org/package/vty
- Brick library for building terminal applications (higher-level, built on top of Vty): https://github.com/jtdaugherty/brick