113 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	866
2	The Open-Closed Principle - Part 1 - The Original Version	460
3	Folding Cheat Sheet #6 - Left and right folds and tail recursion	401
4	The Expression Problem Part 2	401
5	N-Queens Combinatorial Puzzle meets Cats	398
6	Folding Cheat Sheet #1 - Folding over recursively defined data structures for natural numbers and lists	388
7	Tagless Final Encoding - Algebras and Interpreters and also Programs	371
8	Kleisli Composition	346
9	Monad Laws Must Be Checked	345
10	The Functional Programming Triad of map, filter and fold	332
11	Drawing Heighway’s Dragon - Part 1 - Recursive Function Rewrite - From Imperative Style in Pascal 64 To Functional Style in Scala 3	328
12	From Subtype Polymorphism To Typeclass-based Ad hoc Polymorphism - An Example	317
13	Folding Cheat Sheet #7 - The three duality theorems of fold	307
14	Algebraic Data Types for Data Oriented Programming - From Haskell and Scala to Java	304
15	Fibonacci Function Gallery - Part 2	300
16	Compositionality and Category Theory	293
17	A Sighting of filterA in Typelevel Rite of Passage	291
18	Hand Rolled Applicative User Validation Code Kata	288
19	The Nature of Complexity in John Ousterhout’s Philosophy of Software Design	288
20	Folding Cheat Sheet #3 - The universal property of fold	286
21	Functional Core and Imperative Shell - Game of Life Example - Haskell and Scala	284
22	Fibonacci Function Gallery - Part 1	282
23	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 1	279
24	Lambda Expressions and Java 8 - Lambda Calculus, Lambda Expressions, Syntactic Sugar, First Class Functions	279
25	Folding Cheat Sheet #2 - Programmatic and mathematical definitions of right fold and left fold	272
26	The Debt Metaphor - Ward Cunningham in his 2009 YouTube video	269
27	Function Applicative for Great Good of Leap Year Function	262
28	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	261
29	Folding Cheat Sheet #8 - Folding with monoids	256
30	Sum and Product Types - The Fruit Salad & Fruit Snack Example	253
31	Applicative Functor - Part 1	249
32	Scala Left Fold Parallelisation - Three Approaches	246
33	Kleisli composition, flatMap, join, map, unit - implementation and interrelation - V2 updated for Scala 3	244
34	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 1	235
35	List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	231
36	Nat, List and Option Monoids - From scratch - Combining and Folding - An example	230
37	Definitions of Functional Programming	222
38	Folding Cheat Sheet #9 - List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	221
39	The Sieve of Eratosthenes - Part 2 - Genuine versus Unfaithful Sieve	216
40	The Functional Programming Triad of Folding, Scanning and Iteration - A first example in Scala and Haskell	211
41	The Open-Closed Principle - Part 2 - The Contemporary Version - An Introduction	206
42	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Java	202
43	The Expression Problem Part 1	200
44	The Uniform Access Principle	193
45	A sighting of traverseFilter and foldMap in Practical FP in Scala	187
46	Drawing Heighway’s Dragon - Part 2 - Recursive Function Simplification - From 2^n Recursive Invocations To n Tail-Recursive Invocations Exploiting Self-Similarity	184
47	Side by Side - Scala and Java Adaptations of Martin Fowler’s Javascript Refactoring Example	181
48	Computer Graphics in Java and Scala - Part 1	181
49	Quicksort - a whistle-stop tour of the algorithm in five languages and four paradigms	181
50	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Scala	181
51	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 3	180
52	Sierpinski Triangle - Polyglot FP for Fun and Profit - Haskell and Scala	177
53	Applicative Functor - Part 3	177
54	Functor Laws	174
55	The Monad Fact Series	173
56	From Scala Monadic Effects to Unison Algebraic Effects	171
57	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 2	170
58	Computer Graphics in Java and Scala - Part 1b	170
59	Point-free or Die - Tacit Programming in Haskell	167
60	A sighting of sequence function in Practical FP in Scala	167
61	The aggregate function - from sequential and parallel folds to parallel aggregation	166
62	Folding Cheat Sheet #5 - Folding a list right and left using Cons and Nil results in the identity and reverse functions	165
63	Scala 3 enum for a terser Option Monad Algebraic Data Type	164
64	Monad Fact #3	164
65	Monad Fact #1	163
66	Monad Fact #4	163
67	Fusing Transformations of Strict Scala Collections with Views	162
68	Monad Fact #2	160
69	A sighting of traverse_ in Practical FP in Scala	160
70	Folding Unfolded - Part 1	157
71	The Sieve of Eratosthenes - Part 1	156
72	Monad Fact #6	156
73	‘go-to’ general-purpose sequential collections - from Java To Scala	154
74	Left and Right Folds - Comparison of a mathematical definition and a programmatic one	153
75	Folding Unfolded - Part 2	152
76	Applicative Functor - Part 2	151
77	Folding Unfolded - Part 4	148
78	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 2	147
79	Game of Life - Polyglot FP - Haskell and Scala - Part 3	145
80	Folding Unfolded - Part 5	142
81	Functional Effects - Part 2	141
82	Sequence and Traverse - Part 1	140
83	Folding Unfolded - Part 3	139
84	Monad as Functor with pair of Natural Transformations	139
85	Arrive at monads by going from composition of pure functions to composition of effectful functions	139
86	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 4	138
87	Writer Monad for logging execution of functions	138
88	Game of Life - Polyglot FP - Haskell and Scala - Part 1	135
89	Sequence and Traverse - Part 3	134
90	State Monad	134
91	Game of Life - Polyglot FP - Haskell and Scala - Part 2	132
92	Monoids - Part 1 - With examples using Scalaz and Cats	132
93	Function Applicative for Great Good of Palindrome Checker Function	130
94	Natural Transformations	129
95	Monad Fact #5	126
96	Monoids - Part 2 - With examples using Scalaz and Cats	125
97	Drawing Heighway’s Dragon - Part 3 - Simplification Through Separation of Concerns - Rotation Without Matrix Multiplication	125
98	Sequence and Traverse - Part 2	124
99	Functional Effects - Part 1	119
100	ApplicativeError functions handling and recovering from errors: A mnemonic to recall their signatures from their names	116
101	Folding Cheat Sheet Series Titles	113
102	Drawing Heighway’s Dragon - Part 4 - Interactive and Animated Dragon Creation	112
103	Addendum to `Monads do not Compose`	109
104	Test Doubles - Terminology, Definitions and Illustrations - with Examples - Part 1	106
105	Ad hoc Polymorphism using Type Classes and Cats	103
106	Monad Transformers - Part 1	96
107	Functor Composition	91
108	Monads do not Compose	86
109	Year when lambda functions were introduced in various languages	84
110	Symmetry in the interrelation of flatMap/foldMap/traverse and flatten/fold/sequence	83
111	Function Composition - forward composition versus backward composition	78
112	De Morgan's Laws are Monoid Homomorphisms	71
113	Non-strict functions, bottom, and Scala by-name parameters	26