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

#	Title	Views
1	Non-strict functions, bottom, and Scala by-name parameters	428
2	Imperative Bowling Kata - 20 Years On - Delegating Menial Tasks to Github Copilot Chat - using Scala in IntelliJ IDEA	474
3	Symmetry in the interrelation of flatMap/foldMap/traverse and flatten/fold/sequence	533
4	Year when lambda functions were introduced in various languages	533
5	De Morgan's Laws are Monoid Homomorphisms	551
6	Monad as Functor with pair of Natural Transformations	555
7	Addendum to `Monads do not Compose`	565
8	Monad Transformers - Part 1	566
9	Functor Composition	586
10	Monads do not Compose	600
11	Function Composition - forward composition versus backward composition	606
12	Writer Monad for logging execution of functions	711
13	Ad hoc Polymorphism using Type Classes and Cats	716
14	Monoids - Part 2 - With examples using Scalaz and Cats	734
15	Sequence and Traverse - Part 2	738
16	State Monad	748
17	Natural Transformations	752
18	Sequence and Traverse - Part 3	759
19	Functional Effects - Part 2	761
20	Monoids - Part 1 - With examples using Scalaz and Cats	766
21	Sequence and Traverse - Part 1	766
22	Left and Right Folds - Comparison of a mathematical definition and a programmatic one	780
23	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 2	787
24	Functional Effects - Part 1	801
25	Game of Life - Polyglot FP - Haskell and Scala - Part 2	801
26	Folding Cheat Sheet Series Titles	808
27	Monad Fact #2	831
28	Game of Life - Polyglot FP - Haskell and Scala - Part 3	837
29	The aggregate function - from sequential and parallel folds to parallel aggregation	850
30	Monad Fact #5	851
31	Folding Unfolded - Part 4	854
32	Functor Laws	855
33	Function Applicative for Great Good of Palindrome Checker Function	859
34	Monad Fact #3	859
35	Folding Unfolded - Part 3	860
36	Folding Unfolded - Part 5	865
37	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 1	866
38	Fusing Transformations of Strict Scala Collections with Views	867
39	Arrive at monads by going from composition of pure functions to composition of effectful functions	869
40	Applicative Functor - Part 3	870
41	Monad Fact #6	870
42	A sighting of traverseFilter and foldMap in Practical FP in Scala	876
43	The Uniform Access Principle	877
44	The Functional Programming Triad of Folding, Scanning and Iteration - A first example in Scala and Haskell	884
45	‘go-to’ general-purpose sequential collections - from Java To Scala	893
46	Side by Side - Scala and Java Adaptations of Martin Fowler’s Javascript Refactoring Example	904
47	Sum and Product Types - The Fruit Salad & Fruit Snack Example	907
48	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 4	910
49	The Debt Metaphor - Ward Cunningham in his 2009 YouTube video	914
50	Quicksort - a whistle-stop tour of the algorithm in five languages and four paradigms	916
51	A sighting of sequence function in Practical FP in Scala	924
52	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 2	931
53	The Monad Fact Series	933
54	Sierpinski Triangle - Polyglot FP for Fun and Profit - Haskell and Scala	934
55	Monad Fact #4	936
56	Applicative Functor - Part 1	960
57	A sighting of traverse_ in Practical FP in Scala	961
58	Monad Fact #1	977
59	Folding Unfolded - Part 2	985
60	Folding Unfolded - Part 1	1001
61	Scala 3 enum for a terser Option Monad Algebraic Data Type	1015
62	Game of Life - Polyglot FP - Haskell and Scala - Part 1	1021
63	The Sieve of Eratosthenes - Part 1	1026
64	Computer Graphics in Java and Scala - Part 1b	1027
65	Kleisli Composition	1029
66	Nat, List and Option Monoids - From scratch - Combining and Folding - An example	1034
67	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 3	1047
68	Applicative Functor - Part 2	1055
69	Definitions of Functional Programming	1072
70	From Scala Monadic Effects to Unison Algebraic Effects	1075
71	Folding Cheat Sheet #5 - Folding a list right and left using Cons and Nil results in the identity and reverse functions	1080
72	Kleisli composition, flatMap, join, map, unit - implementation and interrelation - V2 updated for Scala 3	1081
73	Functional Core and Imperative Shell - Game of Life Example - Haskell and Scala	1087
74	Test Doubles - Terminology, Definitions and Illustrations - with Examples - Part 1	1103
75	Drawing Heighway’s Dragon - Part 2 - Recursive Function Simplification - From 2^n Recursive Invocations To n Tail-Recursive Invocations Exploiting Self-Similarity	1108
76	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Scala	1116
77	The Sieve of Eratosthenes - Part 2 - Genuine versus Unfaithful Sieve	1139
78	Computer Graphics in Java and Scala - Part 1	1155
79	Algebraic Data Types for Data Oriented Programming - From Haskell and Scala to Java	1166
80	Drawing Heighway’s Dragon - Part 3 - Simplification Through Separation of Concerns - Rotation Without Matrix Multiplication	1181
81	The Expression Problem Part 2	1202
82	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 1	1214
83	AI Concepts - MCP Neurons	1223
84	Imperative Bowling Kata - 20 Years On - Delegating Menial Tasks to AI Coding Tool 'Claude Code'	1242
85	The Expression Problem Part 1	1247
86	Scala Left Fold Parallelisation - Three Approaches	1292
87	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Java	1355
88	Drawing Heighway’s Dragon - Part 4 - Interactive and Animated Dragon Creation	1371
89	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 2	1400
90	The Nature of Complexity in John Ousterhout’s Philosophy of Software Design	1502
91	Folding Cheat Sheet #9 - List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	1561
92	Compositionality and Category Theory	1581
93	From Subtype Polymorphism To Typeclass-based Ad hoc Polymorphism - An Example	1697
94	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	1730
95	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 1	1761
96	Hand Rolled Applicative User Validation Code Kata	1862
97	Point-free or Die - Tacit Programming in Haskell	1913
98	ApplicativeError functions handling and recovering from errors: A mnemonic to recall their signatures from their names	1948
99	Tagless Final Encoding - Algebras and Interpreters and also Programs	1991
100	A Sighting of filterA in Typelevel Rite of Passage	2015
101	Folding Cheat Sheet #8 - Folding with monoids	2114
102	The Open-Closed Principle - Part 2 - The Contemporary Version - An Introduction	2152
103	Folding Cheat Sheet #3 - The universal property of fold	2303
104	Folding Cheat Sheet #2 - Programmatic and mathematical definitions of right fold and left fold	2324
105	Fibonacci Function Gallery - Part 1	2416
106	Function Applicative for Great Good of Leap Year Function	2423
107	The Functional Programming Triad of map, filter and fold	2438
108	Drawing Heighway’s Dragon - Part 1 - Recursive Function Rewrite - From Imperative Style in Pascal 64 To Functional Style in Scala 3	2438
109	Folding Cheat Sheet #7 - The three duality theorems of fold	2511
110	List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	2659
111	Fibonacci Function Gallery - Part 2	2741
112	Lambda Expressions and Java 8 - Lambda Calculus, Lambda Expressions, Syntactic Sugar, First Class Functions	3046
113	Monad Laws Must Be Checked	3341
114	Folding Cheat Sheet #1 - Folding over recursively defined data structures for natural numbers and lists	3448
115	Folding Cheat Sheet #6 - Left and right folds and tail recursion	3841
116	The Open-Closed Principle - Part 1 - The Original Version	4004
117	N-Queens Combinatorial Puzzle meets Cats	4208
118	Direct Style Effect Systems - The Print[A] Example - A Comprehension Aid	9323