Haskell Learning Path

This note links the Haskell examples in a suggested order from first project structure through intermediate language and application patterns.

1. Suggested Order

05-haskell/: a small Cabal library, executable, test suite, and dev shell
06-haskell-shellfor/: a Haskell package set override and a shellFor-based dev shell
07-haskell-deps/: external Haskell libraries through Cabal build-depends
08-haskell-adt/: algebraic data types, records, and pattern matching
09-haskell-newtype/: newtype, smart constructors, and validation
10-haskell-effects/: ReaderT, Except, and constrained application logic
11-haskell-typeclasses/: custom type classes and per-type instances
12-haskell-parser-combinators/: parser combinators with Megaparsec

05-haskell/: how a Cabal package becomes a flake package, app, dev shell, and check
06-haskell-shellfor/: when a Haskell-specific dev shell is more useful than a generic shell
07-haskell-deps/: why Cabal stays the source of truth for package dependencies
08-haskell-adt/: how to model a problem with constructors before writing behavior
09-haskell-newtype/: how to move validation to the boundary and protect the domain model
10-haskell-effects/: how to separate configuration, logic, and failures
11-haskell-typeclasses/: how to abstract shared behavior across several types
12-haskell-parser-combinators/: how to build a small language from reusable parser pieces