Functional PHP. (2017)

• Record Type: Book
• Other Names: Crettenand, Gilles
• Contents: Cover; Copyright; Credits; About the Author; About the Reviewer; www.PacktPub.com; Customer Feedback; Table of Contents; Preface; Chapter 1: Functions as First Class Citizens in PHP; Before we begin; Coding standards; Autoloading and Composer; Functions and methods; PHP 7 scalar type hints; Anonymous functions; Closures; Closures inside of classes; Using objects as functions; The Closure class; Higher-order functions; What is a callable?; Summary; Chapter 2: Pure Functions, Referential Transparency, and Immutability; Two sets of input and output; Pure functions; What about encapsulation? Spotting side causesSpotting side effects; What about object methods?; Closing words; Immutability; Why does immutability matter?; Data sharing; Using constants; An RFC is on its way; Value objects; Libraries for immutable collections; Laravel Collection; Immutable.php; Referential transparency; Non-strictness or lazy evaluation; Performance; Code readability; Infinite lists or streams; Code optimization; Memoization; PHP in all that?; Summary; Chapter 3: Functional Basis in PHP; General advice; Making all inputs explicit; Avoiding temporary variables; Smaller functions Parameter order mattersThe map function; The filter function; The fold or reduce function; The map and filter functions using fold; Folding left and right; The MapReduce model; Convolution or zip; Recursion; Recursion and loops; Exceptions; PHP 7 and exceptions; Alternatives to exceptions; Logging/displaying error message; Error codes; Default value/null; Error handler; The Option/Maybe and Either types; Lifting functions; The Either type; Libraries; The functional-php library; How to use the functions; General helpers; Extending PHP functions; Working with predicates; Invoking functions Manipulating dataWrapping up; The php-option library; Laravel collections; Working with Laravel's Collections; The immutable-php library; Using immutable.php; Other libraries; The Underscore.php library; Saber; Rawr; PHP Functional; Functional; PHP functional programming Utils; Non-standard PHP library; Summary; Chapter 4: Composing Functions; Composing functions; Partial application; Currying; Currying functions in PHP; Parameter order matters a lot!; Using composition to solve real issues; Summary; Chapter 5: Functors, Applicatives, and Monads; Functors; Identity function; Functor laws Identity functorClosing words; Applicative functors; The applicative abstraction; Applicative laws; Map; Identity; Homomorphism; Interchange; Composition; Verifying that the laws hold; Using applicatives; Monoids; Identity law; Associativity law; Verifying that the laws hold; What are monoids useful for?; A monoid implementation; Our first monoids; Using monoids; Monads; Monad laws; Left identity; Right identity; Associativity; Validating our monads; Why monads?; Another take on monads; A quick monad example; Further reading; Summary; Chapter 6: Real-Life Monads; Monadic helper methods
• Publisher Details: Birmingham : Packt Publishing
• Publication Date: 2017
• Extent: 1 online resource (342 pages)
• Subjects: 006.8; COMPUTERS -- Programming Languages -- PHP; COMPUTERS -- Programming Languages -- General; COMPUTERS -- Web -- General; Electronic books; Electronic books
• Languages: English
• ISBNs: 9781785886911
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
• Access Usage: Restricted: Printing from this resource is governed by The Legal Deposit Libraries (Non-Print Works) Regulations (UK) and UK copyright law currently in force.