114 Decks Ordered By PDF Download Count - Highest First - Chse one - invert order

#	Title	Downloads
1	Direct Style Effect Systems - The Print[A] Example - A Comprehension Aid	946
2	The Expression Problem Part 2	540
3	The Open-Closed Principle - Part 1 - The Original Version	527
4	Folding Cheat Sheet #6 - Left and right folds and tail recursion	460
5	N-Queens Combinatorial Puzzle meets Cats	457
6	Kleisli Composition	424
7	Folding Cheat Sheet #1 - Folding over recursively defined data structures for natural numbers and lists	419
8	Monad Laws Must Be Checked	408
9	Tagless Final Encoding - Algebras and Interpreters and also Programs	408
10	The Functional Programming Triad of map, filter and fold	355
11	Fibonacci Function Gallery - Part 2	347
12	Drawing Heighway’s Dragon - Part 1 - Recursive Function Rewrite - From Imperative Style in Pascal 64 To Functional Style in Scala 3	345
13	The Nature of Complexity in John Ousterhout’s Philosophy of Software Design	344
14	From Subtype Polymorphism To Typeclass-based Ad hoc Polymorphism - An Example	344
15	Functional Core and Imperative Shell - Game of Life Example - Haskell and Scala	342
16	Folding Cheat Sheet #7 - The three duality theorems of fold	334
17	The Debt Metaphor - Ward Cunningham in his 2009 YouTube video	328
18	Algebraic Data Types for Data Oriented Programming - From Haskell and Scala to Java	326
19	Compositionality and Category Theory	322
20	Lambda Expressions and Java 8 - Lambda Calculus, Lambda Expressions, Syntactic Sugar, First Class Functions	319
21	Hand Rolled Applicative User Validation Code Kata	315
22	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 1	314
23	A Sighting of filterA in Typelevel Rite of Passage	313
24	Folding Cheat Sheet #3 - The universal property of fold	307
25	List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	304
26	Fibonacci Function Gallery - Part 1	302
27	Folding Cheat Sheet #2 - Programmatic and mathematical definitions of right fold and left fold	301
28	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 1	299
29	Function Applicative for Great Good of Leap Year Function	294
30	Kleisli composition, flatMap, join, map, unit - implementation and interrelation - V2 updated for Scala 3	282
31	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	281
32	Folding Cheat Sheet #8 - Folding with monoids	281
33	Sum and Product Types - The Fruit Salad & Fruit Snack Example	280
34	Applicative Functor - Part 1	273
35	Scala Left Fold Parallelisation - Three Approaches	273
36	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 1	268
37	The Functional Programming Triad of Folding, Scanning and Iteration - A first example in Scala and Haskell	268
38	Nat, List and Option Monoids - From scratch - Combining and Folding - An example	254
39	Folding Cheat Sheet #9 - List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	252
40	The Uniform Access Principle	244
41	Definitions of Functional Programming	241
42	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Java	232
43	The Sieve of Eratosthenes - Part 2 - Genuine versus Unfaithful Sieve	231
44	The Open-Closed Principle - Part 2 - The Contemporary Version - An Introduction	229
45	Drawing Heighway’s Dragon - Part 2 - Recursive Function Simplification - From 2^n Recursive Invocations To n Tail-Recursive Invocations Exploiting Self-Similarity	228
46	The Expression Problem Part 1	216
47	Quicksort - a whistle-stop tour of the algorithm in five languages and four paradigms	213
48	A sighting of traverseFilter and foldMap in Practical FP in Scala	207
49	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 3	205
50	From Scala Monadic Effects to Unison Algebraic Effects	204
51	Monad Fact #3	202
52	Side by Side - Scala and Java Adaptations of Martin Fowler’s Javascript Refactoring Example	201
53	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Scala	201
54	Applicative Functor - Part 3	200
55	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 2	200
56	The Monad Fact Series	199
57	Functor Laws	198
58	Computer Graphics in Java and Scala - Part 1	197
59	Test Doubles - Terminology, Definitions and Illustrations - with Examples - Part 1	196
60	Scala 3 enum for a terser Option Monad Algebraic Data Type	196
61	Computer Graphics in Java and Scala - Part 1b	195
62	Point-free or Die - Tacit Programming in Haskell	192
63	Sierpinski Triangle - Polyglot FP for Fun and Profit - Haskell and Scala	191
64	Monad Fact #1	189
65	A sighting of sequence function in Practical FP in Scala	187
66	Monad Fact #2	184
67	Monad Fact #4	183
68	The aggregate function - from sequential and parallel folds to parallel aggregation	183
69	Folding Cheat Sheet #5 - Folding a list right and left using Cons and Nil results in the identity and reverse functions	183
70	Fusing Transformations of Strict Scala Collections with Views	182
71	Folding Unfolded - Part 1	182
72	Drawing Heighway’s Dragon - Part 3 - Simplification Through Separation of Concerns - Rotation Without Matrix Multiplication	181
73	A sighting of traverse_ in Practical FP in Scala	179
74	Folding Unfolded - Part 2	175
75	Left and Right Folds - Comparison of a mathematical definition and a programmatic one	175
76	Monad Fact #6	175
77	Game of Life - Polyglot FP - Haskell and Scala - Part 3	174
78	The Sieve of Eratosthenes - Part 1	173
79	‘go-to’ general-purpose sequential collections - from Java To Scala	172
80	Folding Unfolded - Part 4	170
81	Applicative Functor - Part 2	167
82	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 2	166
83	Monad as Functor with pair of Natural Transformations	166
84	Writer Monad for logging execution of functions	162
85	Game of Life - Polyglot FP - Haskell and Scala - Part 1	161
86	Functional Effects - Part 2	161
87	Sequence and Traverse - Part 3	161
88	Folding Unfolded - Part 3	161
89	Folding Unfolded - Part 5	160
90	Sequence and Traverse - Part 1	158
91	Monoids - Part 1 - With examples using Scalaz and Cats	158
92	Arrive at monads by going from composition of pure functions to composition of effectful functions	157
93	State Monad	156
94	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 4	155
95	Function Applicative for Great Good of Palindrome Checker Function	151
96	Monoids - Part 2 - With examples using Scalaz and Cats	151
97	Game of Life - Polyglot FP - Haskell and Scala - Part 2	148
98	Natural Transformations	147
99	Functional Effects - Part 1	146
100	Sequence and Traverse - Part 2	146
101	ApplicativeError functions handling and recovering from errors: A mnemonic to recall their signatures from their names	144
102	Monad Fact #5	141
103	Drawing Heighway’s Dragon - Part 4 - Interactive and Animated Dragon Creation	140
104	Folding Cheat Sheet Series Titles	135
105	Monad Transformers - Part 1	129
106	Addendum to `Monads do not Compose`	125
107	Ad hoc Polymorphism using Type Classes and Cats	120
108	Functor Composition	109
109	Monads do not Compose	108
110	Year when lambda functions were introduced in various languages	104
111	Symmetry in the interrelation of flatMap/foldMap/traverse and flatten/fold/sequence	101
112	Function Composition - forward composition versus backward composition	98
113	De Morgan's Laws are Monoid Homomorphisms	94
114	Non-strict functions, bottom, and Scala by-name parameters	51