Name the World
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Naming conventions for any programming languages. (but based on PHP during the talk) Presented at CodeMania01 Bangkok University Room 421 Building 4 27 June 2015
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Name the World
- 1. Saranya Siripuekpong SPECIAL TOPIC Name the world Naming convention! for any programming languages! 27 June 2015
- 2. รันยาคือใคร 27 June 2015 WHO AM I? 2@rzranya
- 3. ที่ทำงานปัจจุบัน 27 June 2015 WHO AM I? 3@rzranya
- 4. Saranya Siripuekpong หัวข้อวันนี้ Name the world Naming convention! for any programming languages! Based on PHP! 27 June 2015
- 5. Review 27 June 2015 5@rzranya
- 6. PHP Variable name rules 27 June 2015 Review 6@rzranya
- 7. PHP Variable name rules ! ! [a-zA-Z_x7f-xff][a-zA-Z0-9_x7f-xff]*! 27 June 2015 Review source: php.net! 7@rzranya
- 8. PHP Variable name rules • A variable starts with the $ sign, followed by the name of the variable! • A variable name must start with a letter or the underscore character! • A variable name cannot start with a number! • A variable name can only contain alpha- numeric characters and underscores (A-z, 0-9, and _ )! • Variable names are case-sensitive ($age and $AGE are two different variables)! 27 June 2015 Review source: w3schools.com! 8@rzranya
- 9. PHP Reserved words: Keywords __halt_compiler()! abstract! and! array()! as! break! callable! case! catch! class! clone! const! continue! declare! default! die()! do! echo! else! elseif! empty()! enddeclare! endfor! endforeach! endif! endswitch! endwhile! eval()! exit()! extends! final! finally! for! foreach! function! global! goto! if! implements! include! include_once! instanceof! insteadof! interface! isset()! list()! namespace! new! or! print! private! protected! public! require! require_once! return! static! switch! throw! trait! try! unset()! use! var! while! xor! yield! 27 June 2015 Review 9@rzranya
- 10. PHP Reserved words: Predefined 27 June 2015 Review • __CLASS__! • __DIR__! • __FILE__! • __FUNCTION__! • __LINE__! • __METHOD__! • __NAMESPACE__! • __TRAIT__! source: php.net! 10@rzranya
- 11. PHP Reserved words: Other • int! • float! • bool! • string! • true! • false! • null! • resource! • object! • mixed! • numeric! 27 June 2015 Review source: php.net! 11@rzranya
- 12. PHP Function calculateMe() vs Calculateme()! 27 June 2015 Review 12@rzranya
- 13. Naming in PHP • Case sensitive! – variables! – constants! – array keys! – class properties! – class constants! • Case insensitive! – functions! – class constructors! – class methods! – keywords and constructs (if, else, null, foreach, echo etc.)! 27 June 2015 Review source: the-echoplex.net! 13@rzranya
- 14. Naming in JAVA • Classes! • Methods! • Variables! • Constants! 27 June 2015 Review 14@rzranya
- 15. Letter case styles • UPPERCASE! • lowercase! • camelCase! • PascalCase! • train-case! • snake_case! • StUdLyCaPs! • Acronyms treatment: ALL CAPS! 27 June 2015 Review 15@rzranya
- 16. Reserved words in JAVA abstract continue for new switch assert default goto package synchronized boolean do if private this break double implements protected throw byte else import public throws case enum instanceof return transient catch extends int short try char final interface static void class finally long strictfp volatile const float native super while 27 June 2015 Review source: oracle.com! 16@rzranya
- 17. JavaScript • $ /! • _! • ClassesName! • methodName! • GLOBAL_VARIABLE! 27 June 2015 Review 17@rzranya
- 18. SQL Reserved words • ANSI SQL 92! • ANSI SQL 99! • ANSI SQL 2003! • MySQL 3.23.x! • MySQL 4.x! • MySQL 5.x! • PostGreSQL 8.1! • MS SQL Server 2000! • MS ODBC! • Oracle 10.2! 27 June 2015 Review source: drupal.org! 18@rzranya
- 19. What we need to name? • Variables! • Types, Class! • Function, Method! • File, Directory! • Namespace, Library! • Server, Device! • Project !?! 27 June 2015 Review 19@rzranya
- 20. PHP Naming Conventions 27 June 2015 20@rzranya
- 21. 27 June 2015 PHP Naming Conventions 21@rzranya
- 22. 27 June 2015 PHP Naming Conventions source: wordpress.com! 22@rzranya
- 23. • Use camelCase, not underscores, for variable, function and method names, arguments;! • Use underscores for option names and parameter names;! • Use namespaces for all classes;! • Prefix abstract classes with Abstract. Please note some early XX classes do not follow this convention and have not been renamed for backward compatibility reasons. However all new abstract classes must follow this naming convention;! • Suffix interfaces with Interface;! • Suffix traits with Trait;! • Suffix exceptions with Exception;! • Use alphanumeric characters and underscores for file names;! 27 June 2015 PHP Naming Conventions 23@rzranya
- 24. • Use camelCase, not underscores, for variable, function and method names, arguments;! • Use underscores for option names and parameter names;! • Use namespaces for all classes;! • Prefix abstract classes with Abstract. Please note some early XX classes do not follow this convention and have not been renamed for backward compatibility reasons. However all new abstract classes must follow this naming convention;! • Suffix interfaces with Interface;! • Suffix traits with Trait;! • Suffix exceptions with Exception;! • Use alphanumeric characters and underscores for file names;! 27 June 2015 PHP Naming Conventions source: symfony.com! 24@rzranya
- 25. • Both database tables and columns are named in lower case.! • Words in a name should be separated using underscores (e.g. product_order).! • For table names, you may use either singular or plural names, but not both. For simplicity, we recommend using singular names.! • Table names may be prefixed with a common token such as tbl_. This is especially useful when the tables of an application coexist in the same database with the tables of another application. The two sets of tables can be readily separate by using different table name prefixes.! 27 June 2015 PHP Naming Conventions 25@rzranya
- 26. • Both database tables and columns are named in lower case.! • Words in a name should be separated using underscores (e.g. product_order).! • For table names, you may use either singular or plural names, but not both. For simplicity, we recommend using singular names.! • Table names may be prefixed with a common token such as tbl_. This is especially useful when the tables of an application coexist in the same database with the tables of another application. The two sets of tables can be readily separate by using different table name prefixes.! 27 June 2015 PHP Naming Conventions source: yiiframework.com! 26@rzranya
- 27. Frameworks & CMS Conventions ! PHP Project Classes Methods Properties Functions Variables ! ! Akelos Framework PascalCase camelCase camelCase lower_case lower_case ! CakePHP Framework PascalCase camelCase camelCase camelCase camelCase ! CodeIgniter Framework Proper_Case lower_case lower_case lower_case lower_case ! Concrete5 CMS PascalCase camelCase camelCase lower_case lower_case ! Doctrine ORM PascalCase camelCase camelCase camelCase camelCase ! Drupal CMS PascalCase camelCase camelCase lower_case lower_case ! Joomla CMS PascalCase camelCase camelCase camelCase camelCase ! modx CMS PascalCase camelCase camelCase camelCase lower_case ! Pear Framework PascalCase camelCase camelCase ! Prado Framework PascalCase camelCase Pascal/camel lower_case ! SimplePie RSS PascalCase lower_case lower_case lower_case lower_case ! Symfony Framework PascalCase camelCase camelCase camelCase camelCase ! WordPress CMS lower_case lower_case ! Zend Framework PascalCase camelCase camelCase camelCase camelCase ! ! 27 June 2015 PHP Naming Conventions source: Jason Holland, 2012.! 27@rzranya
- 28. Frameworks & CMS Conventions • ClassName – PascalCase! • methodName – camelCase ! • propertyName – camelCase ! • regular_function_name – snake_case! • $variable_name – snake_case ! 27 June 2015 @rzranya 28 PHP Naming Conventions source: Jason Holland, 2012.!
- 29. INCORRECT:! function fileproperties() ! !// not descriptive and needs underscore separator! function fileProperties() ! !// not descriptive and uses CamelCase! function getfileproperties() ! !// Better! But still missing underscore separator! function getFileProperties() ! !// uses CamelCase! function get_the_file_properties_from_the_file() !// wordy! ! CORRECT:! function get_file_properties() !// descriptive, underscore separator, and all ! ! ! ! ! ! ! !// lowercase letters! ! INCORRECT:! $j = 'foo'; ! !// single letter variables should only be used in for() loops! $Str! ! ! !// contains uppercase letters! $bufferedText ! !// uses CamelCasing, and could be shortened without losing semantic meaning! $groupid ! ! !// multiple words, needs underscore separator! $name_of_last_city_used // too long! ! CORRECT:! for ($j = 0; $j < 10; $j++)! $str! $buffer! $group_id! $last_city! 27 June 2015 PHP Naming Conventions source: ellislab.com! 29@rzranya
- 30. Global Naming Convention 27 June 2015 30@rzranya
- 31. 27 June 2015 Naming Conventions: Example credit: facebook.com! 31@rzranya
- 32. 27 June 2015 Naming Conventions: Example 32@rzranya
- 33. General Naming Conventions 1. Length! 2. Letter case or delimiter! 3. Notation! 27 June 2015 Naming Conventions 33@rzranya
- 34. โปรแกรมนี้ทำอะไร? ! ! function calc($t, $w) {! !$p = $t * $w * 0.97;! !return $p;! }! 27 June 2015 Naming Conventions 34@rzranya
- 35. โปรแกรมนี้ทำอะไร? ! ! define(‘WH_TAX_RATE’, 0.03);! ! function calculate_payout($hour, $rate) {! !return $hour * $rate * (1 – WH_TAX_RATE);! }! 27 June 2015 Naming Conventions 35@rzranya
- 36. โปรแกรมนี้ทำอะไร? 27 June 2015 Naming Conventions 36@rzranya
- 37. โปรแกรมนี้ทำอะไร? 27 June 2015 Naming Conventions 37@rzranya
- 38. Naming Strategy 27 June 2015 38@rzranya
- 39. Naming Strategy DO! • Variables !what it contains (noun)! • Class ! !how you call it in general (noun)! • Constant !type of usage&value (nominal phrase)! • Function !what it does (verb)! 27 June 2015 Naming Strategy 39@rzranya
- 40. Naming Strategy DO! • File ! !what it applies to the program (noun)! • Folder !type of files it contains || part name (noun)! • Table! !Object or action it records ! ! ! !(noun / verb / noun & verb)! • Field! !what it contains (noun)! • FK! ! !what it refers to (and may be how)! 27 June 2015 Naming Strategy 40@rzranya
- 41. Naming Strategy DO! Short and meaningful! ! Avoid programming keywords! ! English! 27 June 2015 Naming Strategy 41@rzranya
- 42. Naming Strategy Don’t! Too long! ! 1 character name! ! Karaoke! 27 June 2015 Naming Strategy 42@rzranya
- 43. Naming Strategy 1. Examine it as object! 2. Write full description! i. What is is?! ii. What it does?! 3. Find n. , v. or extract to phrase! 4. Check its distinctness! 27 June 2015 Naming Strategy 43@rzranya
- 44. Example 27 June 2015 44@rzranya
- 51. จัดห้องสำหรับงาน Code Mania 27 June 2015 Example 51@rzranya
- 52. ถามได้นะ 27 June 2015 52@rzranya
- 53. please make them … Short and meaningful ! !NOT ! !Too long! ! Noun, Verb, or Phrase ! !NOT ! !1 character name! ! ! ! ! ! ! ! ! ! ! !(except temporary or ! ! ! ! ! ! ! ! ! ! ! !throwaway)! ! English ! ! ! ! ! !NOT ! !Karaoke! ! Distinctive ! ! ! ! !NOT ! !Ambiguous! 27 June 2015 When you name the world, 53@rzranya
- 54. จบแล้ว 27 June 2015 54@rzranya