Hello Zephir

Introduction to zephir lang.

Transcript

1. Hello Zephir DevCom Yangon 2014
2. Hello I am Nyan Lynn Htut Software Engineer @
3. Contact ➢ https://twitter.com/NyanLynnHtut ➢ https://github.com/nyanlynnhtut ➢ https://www.facebook.com/nyanlynnhtut
4. What is Zephir • Open Source Project • High-Level/Domain specific language
5. The name Zephir is a contraction of the words Zend Engine/PHP/Intermediate (Pronounce is zaefire)
6. Purpose • Easy to creation and maintainability for PHP Extension • Easy to contribute Phalcon PHP Framework
7. What is Phalcon • The fastest PHP Framework • Full stack framework for PHP 5 written as a C-extension
8. Image from http://phalconphp.com/
9. Relation of Phalcon and Zephir
10. Hello World • Code in Zephir must be placed in classes • Intended to create object-oriented libraries/frameworks • Namespace is required
11. Hello World Code with Zephir
12. Hello World to C
13. Main features Type system dynamic/static Memory safety pointers or direct memory management aren’t allowed Compilation model ahead of time Memory model task-local garbage collection
14. Compilation vs Interpretation • Compilation usually slows the development time • Need to compile before running your code • Interpretation reduce the performance in favor of productivity
15. Statically Typed • A variable is bound to a particular type for its lifetime • Its type can’t be changed • Eg : C, C++
16. Dynamically Typed • Type is bound to the value, not the variable • A variable might refer to a value of a type • Eg: PHP, JavaScript
17. Compilation Scheme
18. Compilation Scheme • Zephir compile and optimize to native code (C Language) • A compiler optimize and compile to machine code (gcc/clang/vc++)
19. Code Protection • You can hide the code to user and customer. • You can hide the code to other programmer
20. How to use
21. <?php $filter = new MyLibrary\Filter(); echo $filter->alpha(“#hello&54”); // Result is “hello”
22. Taste /* Variables declaration */ var myData; int total = 10, length; string name = “Zephir Language”;
23. Taste // Assign value to variable let length = 5; // Create array let myDate = [1, 2, 3, 4];
24. Taste of “Fetch” • ‘Fetch’ is an operator that reduce a common operation in PHP into a single instruction <?php if ( isset($myArray[$key])) { echo $myArray[$key]; } if fetch value, myArray[key] { echo value; }
25. Taste of “Typeof” • This operator check variable type. ‘Typeof’ could works like comparison operator if (typeof str == "string") { echo str; }
26. Type Hints // Tell the compiler that "o" // is an instance of class MyClass let o = <MyClass> this->_myObject; o->myMethod();
27. Return Type Hints • Methods in classes and interfaces can have return type hints namespace App; class MyClass { public function getSomeData() -> string { // This method must be return string value } public function getApp() -> <App\MyInterface> { // This method must be return object // does implement App\MyInterface } }
28. Read-Only Parameters • Parameters marked with this attribute cannot be modified inside the method namespace App; class MyClass { // "a" is read-only public function getSomeData(const string a) { // this will throw a compiler exception let a = "hello"; } }
29. Getter/Setter shortcuts • Like in C#, you can use get/set/toString shortcuts in Zephir namespace App; class MyClass { protected myProperty { set, get, toString }; }
30. How to start Type in terminal zephir init devcom
31. Project Skeleton devcom/ devcom/ ext/ config.json Your source codes within this directory
32. Resources • http://zephir-lang.com • https://github.com/phalcon/zephir/ • https://twitter.com/zephirlang • http://phalconphp.com/ • https://github.com/phalcon/cphalcon • https://twitter.com/phalconphp
33. Current Zephir Version 0.5.5 Alpha
34. Questions?
35. Thanks