Ein wenig Theorie über Naming @ PHPUGMRN V/2016

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NAMING A LITTLE THEORY ABOUT

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HELLO AGAIN FRANK KLEINE ▸ Software Architect at 1&1 Internet ▸ @bovigo Taken at dotGo 2016 in Paris on October 10, 2016 by Nicolas Ravelli

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EXAMPLE Code snippet: Laravel Capsule for buildung SQL queries by @SenseException

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EXAMPLE CONTAINER? Code snippet: Laravel Capsule for buildung SQL queries by @SenseException

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EXAMPLE CONTAINER? MANAGER? Code snippet: Laravel Capsule for buildung SQL queries by @SenseException

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EXAMPLE WTF? CONTAINER? MANAGER? Code snippet: Laravel Capsule for buildung SQL queries by @SenseException

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A COMMON FALLACY IS TO ASSUME AUTHORS OF INCOMPREHENSIBLE CODE WILL SOMEHOW BE ABLE TO EXPRESS THEMSELVES LUCIDLY AND CLEARLY IN COMMENTS. Kevlin Henney COMMENTS https://twitter.com/KevlinHenney/status/381021802941906944

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THERE ARE ONLY TWO HARD THINGS IN COMPUTER SCIENCE: CACHE INVALIDATION AND NAMING THINGS. Phil Karlton NAMING IS HARD http://martinfowler.com/bliki/TwoHardThings.html

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THERE ARE TWO PROBLEMS IN COMPUTER SCIENCE: THERE’S ONLY ONE JOKE, AND IT ISN’T FUNNY. Peter Hilton IS IT? From: Why naming things is hard

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IF NAMES BE NOT CORRECT, LANGUAGE IS NOT IN ACCORDANCE WITH THE TRUTH OF THINGS. Confucius IMPORTANCE From: The Analects of Confucius

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DEFINITION WIKIPEDIA ABOUT PRODUCT NAMING Naming is the discipline of deciding what a product will be called, and is very similar in concept and approach to the process of deciding on a name for a company or organization. Product naming is considered a critical part of the branding process, which includes all of the marketing activities that affect the brand image, such as positioning and the design of logo, packaging and the product itself. The process involved in product naming can take months or years to complete. Some key steps include specifying the objectives of the branding, developing the product name itself, evaluating names through target market testing and focus groups, choosing a ﬁnal product name, and ﬁnally identifying it as a trademark for protection. https://en.wikipedia.org/wiki/Product_naming

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PRODUCT THE CODE IS YOUR PRODUCT API classes & interfaces & methods functions constants & variables

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NAMES AND ATTRIBUTES MUST BE ACCOMMODATED TO THE ESSENCE OF THINGS, AND NOT THE ESSENCE TO THE NAMES, SINCE THINGS COME FIRST AND NAMES AFTERWARDS. Galileo Galilei INITIAL NAMES From: Discoveries and Opinions of Galileo

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KEY STEPS Learn and understand the domain Rename things Use a thesaurus Rename things Learn and understand the domain Rename things

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NAMES ARE NOT ALWAYS WHAT THEY SEEM. Mark Twain ITERATE From: Following the Equator: A Journey Around the World

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THE 7 STAGES OF NAMING From: Good naming is a process, not a single step, by Arlo Belshee

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MEASURE ARE DOMAIN KEYWORDS RECOGNIZABLE?

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VFSSTREAM

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No content

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BOVIGO/ASSERT

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BITEXPERT/DISCO

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TOWARDS DOMAIN KEYWORDS $portfolioIdsByTraderId = …; … if (isset($portfolioIdsByTraderId[$trader->getId()][$portfolioId])) {…} Adapted from: 97 Things Every Programmer Should Know, Chapter: Code in the Language of the Domain by Dan North

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BE PRECISE ELIMINATE UNNECESSARY NOISE SubscriptionsService ConnectionFailureException RequestInterface getVvalue()

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STRUCTURE SUPPORT BY The World's First Hyperboloid Lattice Diagrid Structure in Polibino, Lipetsk Oblast. Inside view. Image by Sergei Arssenev, CC-SA-BY-3.0

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SOMETIMES, THE ELEGANT IMPLEMENTATION IS JUST A FUNCTION. NOT A METHOD. NOT A CLASS. NOT A FRAMEWORK. JUST A FUNCTION. John Carmack NAMING AND STRUCTURES http://www.azquotes.com/quote/1022779

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PHP & FUNCTIONS E_TOO_MANY_CLASSES ▸ Don’t undervalue functions ▸ Put them in namespaces, but group them in a ﬁle ▸ Autoload the ﬁle with Composer "autoload": { "files": ["src/functions.php"] }

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FUNCTION USAGE namespace my\example; use function bovigo\assert\assert; use function bovigo\assert\predicate\isOfSize; class KinderSurpriseTest extends \PHPUnit_Framework_TestCase { /** @test */ public function isThreeThingsInOne() { $valueForUser = KinderSurprise(); assert($valueForUser, isOfSize(3)); } } bovigo/assert

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STILL ROOM FOR IMPROVEMENT namespace my\example; use function bovigo\assert\assert; use function bovigo\assert\predicate\isOfSize; class KinderSurpriseTest extends \PHPUnit_Framework_TestCase { /** @test */ public function isThreeThingsInOne() { $valueForUser = KinderSurprise(); assert($valueForUser, isOfSize(3)); } } bovigo/assert

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NO UNNECESSARY NOISE namespace my\example; use function bovigo\assert\assert; use function bovigo\assert\predicate\isOfSize; class KinderSurprise {Test extends \PHPUnit_Framework_TestCase /** @test */ public function isThreeThingsInOne() { $valueForUser = KinderSurprise(); assert($valueForUser, isOfSize(3)); } } bovigo/assert

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BUT WHAT ABOUT NAMING CONVENTIONS? you NAMING CONVENTIONS

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IF YOU HAVE NAMING CONVENTIONS, FOLLOW THEM. BUT CHANGE THEM IF THEY LEAD TO INFERIOR NAMING. me NAMING CONVENTIONS