115 Decks Ordered By PDF Download Count - Lowest First - Chse one - invert order

#	Title	Downloads
1	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 2	29
2	Non-strict functions, bottom, and Scala by-name parameters	51
3	De Morgan's Laws are Monoid Homomorphisms	94
4	Function Composition - forward composition versus backward composition	98
5	Symmetry in the interrelation of flatMap/foldMap/traverse and flatten/fold/sequence	101
6	Year when lambda functions were introduced in various languages	104
7	Monads do not Compose	109
8	Functor Composition	110
9	Ad hoc Polymorphism using Type Classes and Cats	120
10	Addendum to `Monads do not Compose`	125
11	Monad Transformers - Part 1	131
12	Folding Cheat Sheet Series Titles	136
13	Drawing Heighway’s Dragon - Part 4 - Interactive and Animated Dragon Creation	140
14	Monad Fact #5	141
15	ApplicativeError functions handling and recovering from errors: A mnemonic to recall their signatures from their names	144
16	Sequence and Traverse - Part 2	146
17	Functional Effects - Part 1	147
18	Game of Life - Polyglot FP - Haskell and Scala - Part 2	148
19	Natural Transformations	148
20	Function Applicative for Great Good of Palindrome Checker Function	151
21	Monoids - Part 2 - With examples using Scalaz and Cats	151
22	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 4	155
23	Arrive at monads by going from composition of pure functions to composition of effectful functions	157
24	State Monad	157
25	Sequence and Traverse - Part 1	158
26	Monoids - Part 1 - With examples using Scalaz and Cats	159
27	Functional Effects - Part 2	161
28	Folding Unfolded - Part 3	161
29	Folding Unfolded - Part 5	161
30	Sequence and Traverse - Part 3	161
31	Writer Monad for logging execution of functions	162
32	Game of Life - Polyglot FP - Haskell and Scala - Part 1	163
33	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 2	166
34	Applicative Functor - Part 2	167
35	Monad as Functor with pair of Natural Transformations	168
36	Folding Unfolded - Part 4	170
37	‘go-to’ general-purpose sequential collections - from Java To Scala	173
38	The Sieve of Eratosthenes - Part 1	173
39	Game of Life - Polyglot FP - Haskell and Scala - Part 3	174
40	Left and Right Folds - Comparison of a mathematical definition and a programmatic one	175
41	Monad Fact #6	176
42	Folding Unfolded - Part 2	177
43	A sighting of traverse_ in Practical FP in Scala	181
44	Drawing Heighway’s Dragon - Part 3 - Simplification Through Separation of Concerns - Rotation Without Matrix Multiplication	182
45	Folding Unfolded - Part 1	182
46	Fusing Transformations of Strict Scala Collections with Views	183
47	Monad Fact #4	183
48	The aggregate function - from sequential and parallel folds to parallel aggregation	183
49	Monad Fact #2	184
50	Folding Cheat Sheet #5 - Folding a list right and left using Cons and Nil results in the identity and reverse functions	184
51	A sighting of sequence function in Practical FP in Scala	189
52	Sierpinski Triangle - Polyglot FP for Fun and Profit - Haskell and Scala	191
53	Point-free or Die - Tacit Programming in Haskell	192
54	Monad Fact #1	192
55	Computer Graphics in Java and Scala - Part 1b	196
56	Computer Graphics in Java and Scala - Part 1	198
57	Scala 3 enum for a terser Option Monad Algebraic Data Type	198
58	Functor Laws	199
59	The Monad Fact Series	199
60	Test Doubles - Terminology, Definitions and Illustrations - with Examples - Part 1	200
61	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 2	201
62	Applicative Functor - Part 3	201
63	Side by Side - Scala and Java Adaptations of Martin Fowler’s Javascript Refactoring Example	201
64	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Scala	201
65	Monad Fact #3	204
66	From Scala Monadic Effects to Unison Algebraic Effects	204
67	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 3	205
68	A sighting of traverseFilter and foldMap in Practical FP in Scala	207
69	Quicksort - a whistle-stop tour of the algorithm in five languages and four paradigms	214
70	The Expression Problem Part 1	216
71	The Open-Closed Principle - Part 2 - The Contemporary Version - An Introduction	230
72	Drawing Heighway’s Dragon - Part 2 - Recursive Function Simplification - From 2^n Recursive Invocations To n Tail-Recursive Invocations Exploiting Self-Similarity	231
73	The Sieve of Eratosthenes - Part 2 - Genuine versus Unfaithful Sieve	231
74	Refactoring: A First Example - Martin Fowler’s First Example of Refactoring, Adapted to Java	233
75	Definitions of Functional Programming	241
76	The Uniform Access Principle	245
77	Folding Cheat Sheet #9 - List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	253
78	Nat, List and Option Monoids - From scratch - Combining and Folding - An example	256
79	The Functional Programming Triad of Folding, Scanning and Iteration - A first example in Scala and Haskell	268
80	Scala 3 by Example - Algebraic Data Types for Domain Driven Design - Part 1	269
81	Scala Left Fold Parallelisation - Three Approaches	273
82	Applicative Functor - Part 1	274
83	Sum and Product Types - The Fruit Salad & Fruit Snack Example	281
84	Folding Cheat Sheet #8 - Folding with monoids	282
85	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	283
86	Kleisli composition, flatMap, join, map, unit - implementation and interrelation - V2 updated for Scala 3	284
87	Function Applicative for Great Good of Leap Year Function	296
88	Folding Cheat Sheet #2 - Programmatic and mathematical definitions of right fold and left fold	302
89	Fibonacci Function Gallery - Part 1	303
90	List Unfolding - 'unfold' as the Computational Dual of 'fold', and how 'unfold' relates to 'iterate'	306
91	Combinatorial Interview Problems with Backtracking Solutions - from Procedural to Functional Programming - Part 1	306
92	Folding Cheat Sheet #3 - The universal property of fold	307
93	A Sighting of filterA in Typelevel Rite of Passage	315
94	Hand Rolled Applicative User Validation Code Kata	315
95	N-Queens Combinatorial Problem - Polyglot FP for Fun and Profit – Haskell and Scala - Part 1	316
96	Lambda Expressions and Java 8 - Lambda Calculus, Lambda Expressions, Syntactic Sugar, First Class Functions	321
97	Compositionality and Category Theory	322
98	Algebraic Data Types for Data Oriented Programming - From Haskell and Scala to Java	328
99	The Debt Metaphor - Ward Cunningham in his 2009 YouTube video	334
100	Folding Cheat Sheet #7 - The three duality theorems of fold	335
101	Functional Core and Imperative Shell - Game of Life Example - Haskell and Scala	342
102	From Subtype Polymorphism To Typeclass-based Ad hoc Polymorphism - An Example	344
103	Drawing Heighway’s Dragon - Part 1 - Recursive Function Rewrite - From Imperative Style in Pascal 64 To Functional Style in Scala 3	345
104	The Nature of Complexity in John Ousterhout’s Philosophy of Software Design	347
105	Fibonacci Function Gallery - Part 2	349
106	The Functional Programming Triad of map, filter and fold	355
107	Monad Laws Must Be Checked	408
108	Tagless Final Encoding - Algebras and Interpreters and also Programs	409
109	Folding Cheat Sheet #1 - Folding over recursively defined data structures for natural numbers and lists	420
110	Kleisli Composition	431
111	N-Queens Combinatorial Puzzle meets Cats	458
112	Folding Cheat Sheet #6 - Left and right folds and tail recursion	463
113	The Open-Closed Principle - Part 1 - The Original Version	529
114	The Expression Problem Part 2	548
115	Direct Style Effect Systems - The Print[A] Example - A Comprehension Aid	951