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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...很多优化注意事项，但是看过这些文章后大多数存在一个问题就是只给出啥啥啥不能用，啥啥啥该咋用等，却很少有较为系统的进行真正性能案例分析的，大多数都是嘴上喊喊或者死记住规则而已（当然了，这话我自己听着都有...
在线服务的黑天鹅 - 资讯 - 清泛网 - 专注C/C++及内核技术
...利用周日休息一下，但是一醒来就收到消息说某服务有些问题。于是赶紧连线了一堆正在处理事件的工程师，等拿到初步的原因分析之后，已经4小时之后了。
“墨菲定律”，一位工程师说，“前几天觉得这个地方有些隐患，已...
惨不忍睹：说一说你最穷的时候是什么样子 - 创意 - 清泛网 - 专注C/C++及内核技术
...话说，一分钱难倒英雄汉，有的时候没钱真的很难。那么问题来了，...
每个人的一生中都会和金钱打交道，每个人也都会遇到囊中羞涩的时候。俗话说，一分钱难倒英雄汉，有的时候没钱真的很难。那么问题来了，你最穷...
PHP foreach change original array values
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In PHP, passing by reference (&) is ... controversial. I recommend not using it unless you know why you need it and test the results.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if (...
Facebook share link without JavaScript
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You could use
<a href="https://www.facebook.com/sharer/sharer.php?u=#url" target="_blank">Share</a>
Currently there is no sharing option without passing current url as a parameter. You can use an indirect way to achieve this.
Create a server side page for example: "/sharer....
PHP calculate age
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This works fine.
<?php
//date in mm/dd/yyyy format; or it can be in other formats as well
$birthDate = "12/17/1983";
//explode the date to get month, day and year
$birthDate = explode("/", $birthDate);
//get age from date or birthdate...
How to check that an object is empty in PHP?
How to find if an object is empty or not in PHP.
11 Answers
11
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第一个Hello,OS World操作系统 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...0
其中，主要的步骤代码中都有详尽的注释，如有任何问题，请移步至论坛《深入OS》板块发帖讨论。
编译执行过程：
打开dos窗口，进入源码所在目录，执行命令nasm boot.asm -o pfos.img：
同目录下生成一个"pfos.img"软盘映...
How do I create a simple 'Hello World' module in Magento?
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First and foremost, I highly recommend you buy the PDF/E-Book from PHP Architect. It's US$20, but is the only straightforward "Here's how Magento works" resource I've been able to find. I've also started writing Magento tutorials at my own website.
Second, if you have a choice, and aren't a...
Parsing a string into a boolean value in PHP
Today I was playing with PHP, and I discovered that the string values "true" and "false" are not correctly parsed to boolean in a condition, for example considering the following function:
...