118 Decks Ordered By View Count - Highest First - Chse one - invert order

#	Title	Views
1	Direct Style Effect Systems - The Print[A] Example - A Comprehension Aid	9637
2	N-Queens Combinatorial Puzzle meets Cats	4405
3	The Open-Closed Principle - Part 1 - The Original Version	4201
4	Folding Cheat Sheet #6 - Left and right folds and tail recursion	4071
5	Monad Laws Must Be Checked	3516
6	Folding Cheat Sheet #1 - Folding over recursively defined data structures for natural numbers and lists	3509
7	Lambda Expressions and Java 8 - Lambda Calculus, Lambda Expressions, Syntactic Sugar, First Class Functions	3232
8	Fibonacci Function Gallery - Part 2	2792
9	List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	2727
10	Folding Cheat Sheet #7 - The three duality theorems of fold	2572
11	The Functional Programming Triad of map, filter and fold	2498
12	Drawing Heighway’s Dragon - Part 1 - Recursive Function Rewrite - From Imperative Style in Pascal 64 To Functional Style in Scala 3	2495
13	Function Applicative for Great Good of Leap Year Function	2491
14	Fibonacci Function Gallery - Part 1	2479
15	Folding Cheat Sheet #2 - Programmatic and mathematical definitions of right fold and left fold	2376
16	Folding Cheat Sheet #3 - The universal property of fold	2346
17	The Open-Closed Principle - Part 2 - The Contemporary Version - An Introduction	2209
18	Folding Cheat Sheet #8 - Folding with monoids	2162
19	A Sighting of filterA in Typelevel Rite of Passage	2068
20	Tagless Final Encoding - Algebras and Interpreters and also Programs	2064
21	ApplicativeError functions handling and recovering from errors: A mnemonic to recall their signatures from their names	2013
22	Point-free or Die - Tacit Programming in Haskell	1969
23	Hand Rolled Applicative User Validation Code Kata	1927
24	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 1	1863
25	Folding Cheat Sheet #4 - For functions that can be defined both as a right fold and as a left fold, one may be more efficient than the other	1779
26	From Subtype Polymorphism To Typeclass-based Ad hoc Polymorphism - An Example	1753
27	Compositionality and Category Theory	1627
28	Folding Cheat Sheet #9 - List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	1604
29	The Nature of Complexity in John Ousterhout’s Philosophy of Software Design	1553
30	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 2	1463
31	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Java	1448
32	Drawing Heighway’s Dragon - Part 4 - Interactive and Animated Dragon Creation	1425
33	The Expression Problem Part 2	1365
34	Scala Left Fold Parallelisation - Three Approaches	1344
35	AI Concepts - MCP Neurons	1322
36	Imperative Bowling Kata - 20 Years On - Delegating Menial Tasks to AI Coding Tool 'Claude Code'	1310
37	The Expression Problem Part 1	1293
38	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 1	1287
39	Drawing Heighway’s Dragon - Part 3 - Simplification Through Separation of Concerns - Rotation Without Matrix Multiplication	1238
40	Computer Graphics in Java and Scala - Part 1	1226
41	Algebraic Data Types for Data Oriented Programming - From Haskell and Scala to Java	1225
42	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Scala	1193
43	The Sieve of Eratosthenes - Part 2 - Genuine versus Unfaithful Sieve	1186
44	Drawing Heighway’s Dragon - Part 2 - Recursive Function Simplification - From 2^n Recursive Invocations To n Tail-Recursive Invocations Exploiting Self-Similarity	1172
45	Test Doubles - Terminology, Definitions and Illustrations - with Examples - Part 1	1160
46	From Scala Monadic Effects to Unison Algebraic Effects	1139
47	Functional Core and Imperative Shell - Game of Life Example - Haskell and Scala	1139
48	Kleisli composition, flatMap, join, map, unit - implementation and interrelation - V2 updated for Scala 3	1128
49	Folding Cheat Sheet #5 - Folding a list right and left using Cons and Nil results in the identity and reverse functions	1126
50	Applicative Functor - Part 2	1117
51	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 3	1115
52	Definitions of Functional Programming	1113
53	Scala 3 enum for a terser Option Monad Algebraic Data Type	1106
54	Computer Graphics in Java and Scala - Part 1b	1103
55	Game of Life - Polyglot FP - Haskell and Scala - Part 1	1090
56	Nat, List and Option Monoids - From scratch - Combining and Folding - An example	1087
57	Kleisli Composition	1074
58	The Sieve of Eratosthenes - Part 1	1072
59	Folding Unfolded - Part 1	1058
60	Folding Unfolded - Part 2	1049
61	Applicative Functor - Part 1	1017
62	Monad Fact #1	1015
63	A sighting of traverse_ in Practical FP in Scala	1000
64	The Monad Fact Series	990
65	Sierpinski Triangle - Polyglot FP for Fun and Profit - Haskell and Scala	988
66	Monad Fact #4	973
67	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 2	971
68	The Debt Metaphor - Ward Cunningham in his 2009 YouTube video	963
69	A sighting of sequence function in Practical FP in Scala	963
70	Quicksort - a whistle-stop tour of the algorithm in five languages and four paradigms	953
71	Sum and Product Types - The Fruit Salad & Fruit Snack Example	945
72	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 4	945
73	Side by Side - Scala and Java Adaptations of Martin Fowler’s Javascript Refactoring Example	944
74	‘go-to’ general-purpose sequential collections - from Java To Scala	936
75	The Functional Programming Triad of Folding, Scanning and Iteration - A first example in Scala and Haskell	934
76	A sighting of traverseFilter and foldMap in Practical FP in Scala	928
77	Folding Unfolded - Part 5	927
78	The Uniform Access Principle	921
79	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 1	915
80	Applicative Functor - Part 3	912
81	Arrive at monads by going from composition of pure functions to composition of effectful functions	911
82	Monad Fact #6	905
83	Fusing Transformations of Strict Scala Collections with Views	903
84	Monad Fact #3	903
85	Function Applicative for Great Good of Palindrome Checker Function	902
86	Folding Unfolded - Part 3	901
87	The aggregate function - from sequential and parallel folds to parallel aggregation	894
88	Functor Laws	893
89	Monad Fact #5	892
90	Folding Unfolded - Part 4	890
91	Game of Life - Polyglot FP - Haskell and Scala - Part 3	872
92	Monad Fact #2	866
93	Folding Cheat Sheet Series Titles	859
94	Game of Life - Polyglot FP - Haskell and Scala - Part 2	849
95	Functional Effects - Part 1	842
96	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 2	830
97	Left and Right Folds - Comparison of a mathematical definition and a programmatic one	817
98	Monoids - Part 1 - With examples using Scalaz and Cats	807
99	Sequence and Traverse - Part 1	805
100	Functional Effects - Part 2	797
101	Sequence and Traverse - Part 3	796
102	Natural Transformations	796
103	State Monad	788
104	Monoids - Part 2 - With examples using Scalaz and Cats	781
105	Sequence and Traverse - Part 2	780
106	Ad hoc Polymorphism using Type Classes and Cats	761
107	Writer Monad for logging execution of functions	756
108	Imperative Bowling Kata - 20 Years On - Delegating Menial Tasks to Github Copilot Chat - using Scala in IntelliJ IDEA	676
109	Monads do not Compose	642
110	Function Composition - forward composition versus backward composition	642
111	Functor Composition	625
112	Monad Transformers - Part 1	609
113	Addendum to `Monads do not Compose`	602
114	Monad as Functor with pair of Natural Transformations	598
115	De Morgan's Laws are Monoid Homomorphisms	593
116	Year when lambda functions were introduced in various languages	573
117	Symmetry in the interrelation of flatMap/foldMap/traverse and flatten/fold/sequence	573
118	Non-strict functions, bottom, and Scala by-name parameters	469