兴奋、强类型版的PHP语言
Hack 是 Facebook 推出的一款新的编程语言。 Hack 是由Facebook开发的,同时结合了动态类型语言(如C语言)和静态类型语言(如PHP语言)两种特点的一种编程语言。通常在使用静态类型语言编程 时,开发者会在程序被运行前就知道错误发生的位置。而在更为当前
Hack 是 Facebook 推出的一款新的编程语言。
Hack 是由Facebook开发的,同时结合了动态类型语言(如C语言)和静态类型语言(如PHP语言)两种特点的一种编程语言。通常在使用静态类型语言编程 时,开发者会在程序被运行前就知道错误发生的位置。而在更为当前的编程环境里,动态类型语言会一直运行到直至程序出错崩溃。
特性:
- 该语言将能使代码的编写和测试更加高效快速,能够在程序运行前捕获到其中的错误;
- 同时结合了动态类型语言(如PHP语言)和静态类型语言(如C语言)两种特点;
- Hack对代码本身的运行速度并没有实质影响;
- 基于hhvm(hiphop vm)运行
我不知道我的系统环境如何,用下面的步骤就装好了
hhvm --<span>version HipHop VM </span><span>2.5</span>.<span>0</span>-dev+<span>2014.03</span>.<span>20</span><span> (rel) Compiler: heads</span>/master-<span>0</span>-<span>gc4b6a793b0d6bc28e63c29151ca0a5c12bbbf856 Repo schema: 0e601f9f2c514001cbe38f215a281d34f36a9a9c</span>
Installing Boost 1.49
Similarly, HHVM requires Boost 1.49, but Ubuntu 12.04 only ships with 1.48. To get a more recent version, follow these steps:
<span>sudo</span> add-apt-repository ppa:mapnik/<span>boost </span><span>sudo</span> apt-<span>get update </span><span>sudo</span> apt-get <span>install</span> libboost1.<span>49</span>-dev libboost-regex1.<span>49</span>-<span>dev \ libboost</span>-system1.<span>49</span>-dev libboost-program-options1.<span>49</span>-<span>dev \ libboost</span>-filesystem1.<span>49</span>-dev libboost-thread1.<span>49</span>-dev
<br>
For Ubuntu 12.04:
<span>wget</span> -O - http:<span>//</span><span>dl.hhvm.com/conf/hhvm.gpg.key | sudo apt-key add -</span> <span>echo</span> deb http:<span>//</span><span>dl.hhvm.com/ubuntu precise main | sudo tee /etc/apt/sources.list.d/hhvm.list</span> <span>sudo</span> apt-<span>get update </span><span>sudo</span> apt-get <span>install</span> hhvm-nightly
<code><span>装好后,创建一个文件如 first.hack,代码如下:<br><br></span></code>
<span>hh </span><span>//</span><span> Hack functions are annotated with types.</span> <span>function</span> my_negation(bool <span>$x</span>):<span> bool { </span><span>return</span> !<span>$x</span><span>; } </span><span>//</span><span> FIXME: annotate this function parameter // and return with the type 'int'.</span> <span>function</span> add_one(int <span>$x</span>):<span> int { </span><span>return</span> <span>$x</span>+1<span>; } </span><span>echo</span> add_one(5);
<code><span>在命令行运行<br><br></span></code>
hhvm first.hack
<code><span> </span></code>
安装指南
1. https://github.com/facebook/hhvm/wiki/Building-and-installing-HHVM-on-Ubuntu-12.04
2. http://zendframework.info/tag/hhvm-2/

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