Coding/Learn/haskell/haskell production architecture
Learn Haskell & Pure Functional Programming
01.Introduction to Haskell & GHC
02.Syntax, Comments & Program Layout
03.Basic Types & Immutability
04.Arithmetic, Precedence & Infix Functions
05.Strings, Lists & the Cons Operator (:)
06.Booleans, Equality & Logical Operators
07.Conditional Expressions (if then else)
08.Function Guards (| condition = result)
09.Pattern Matching on Functions
10.Case Expressions (case of)
11.Local Bindings with let ... in
12.Auxiliary Bindings with where Clauses
13.Function Signatures & Referential Transparency
14.Currying & Partial Function Application
15.Anonymous Lambda Expressions (\x -> expr)
16.Higher-Order Functions: map, filter, foldl & foldr
17.Function Composition (.) & Application ($)
18.Recursion Patterns & Tail Recursion
19.Tuples & Pair Operations (fst, snd)
20.List Functions: head, tail, take, drop & null
21.Arithmetic Sequences & List Ranges
22.List Comprehensions
23.Zipping & Combining Lists (zip, zipWith)
24.Lazy Evaluation & Infinite Streams
25.Type Inference & Type Variables
26.Standard Typeclasses: Eq, Ord, Show & Num
27.Defining Custom Typeclasses & Instances
28.Type Synonyms (type) & newtype Wrappers
29.Algebraic Data Types (data ADT)
30.Record Syntax & Named Fields
31.The Maybe Type & Null Safety
32.The Either Type for Detailed Errors
33.Pattern Matching on Maybe & Either
34.Domain Errors & Validation Pipelines
35.Recursive Data Structures: Binary Trees
36.Strictness, seq & Bang Patterns (!)
37.The Functor Typeclass & fmap (<$>)
38.Applicative Functors: pure & (<*>)
39.The Monad Typeclass & Bind Operator (>>=)
40.Do Notation & Monadic Desugaring
41.The Three Monad Laws
42.Monadic Utilities: sequence, mapM, forM & when
43.The IO Monad & Pure/Impure Separation
44.File I/O: Reading & Writing Files
45.Modules, Exports & Qualified Imports
46.Monad Transformers: Reader, Writer & State
47.Concurrency, forkIO & MVars
48.Property-Based Testing with QuickCheck
49.Unit Testing & Test Suites (HUnit / Hspec)
50.Monadic Parsing & Parser Combinators
51.Production Architecture: Cabal & Stack
52.Comprehensive Functional Practice Challenges
53.Final Knowledge Assessment Quiz
54.Capstone Project: Domain Expression Evaluator & AST Engine
55.Verified Haskell Developer Certificate
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Lesson 51 of 55
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Production Architecture: Cabal & Stack

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In Plain English

Learn how production Haskell applications are organized, configured, and built using Cabal packages, Stack reproducible resolvers (LTS Haskell), and clean directory structures (src/, app/, test/).

Deep Dive: How It Works

Package Tools: Cabal (the core build system) and Stack (curated LTS snapshot package manager).

Directory Layout: src/ for core library modules, app/ for Main executable, test/ for test suites.

GHC Flags: -Wall (enable all warnings), -O2 (maximum optimization), -threaded (multi-threaded runtime).

PointCore Rules to Remember

Point star
Cabal & Stack Ecosystem: Standard tools for package management and reproducible compilation.
Point star
GHC Optimization Flags: Use -O2 -threaded -rtsopts for maximum production performance.

Live Interactive Example

Hit Run Code to see it live
Production Project Blueprint
Python 3.12
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Output Console
Click "Run Code" to view the rendered output.
How it works: Summary of the production packaging standards in Haskell.

Your Turn: Micro Challenge

No pressure! Edit the starter code below and test your solution with instant feedback.

Micro Exercise

Confirm Architecture Standards

  • PointPrint `"Production Haskell architecture verified 100%"`.
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Sandbox Output
Click "Run & Check" to test your solution.

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