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字符串指针变量与字符数组的区别 - C/C++ - 清泛网 - 专注C/C++及内核技术

...和运算。但是两者是有区别的。在使用时应注意以下几个问题: 1. 字符串指针变量本身是一个变量,用于存放字符串的首地址。而字符串本身是存放在以该首地址为首的一块连续的内存空间中并以‘’作为串的结束。...
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[解决]MySql提示:The server quit without updating PID file(…)失败 - 数...

...系统默认,不知道为什么不能自动扩容!以后在处理这个问题!如图所示: [root@rekfan ~]# df 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/mapper/vg_rekfan-lv_root 51606140 47734848 1249852 100% / tmpfs ...
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如何诊断CDN故障 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...,所以诊断起来有点麻烦,必须想想招儿。 首当其冲的问题是如何确认CDN有哪些节点? 幸运的是通过阿里测提供的服务,我们能拿到这个IP列表,当然这个IP列表不可能百分百完整,不过应该包含了大部分的节点,有兴趣的可...
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xunsearch主键重复、搜索结果重复 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...te提交会忽略(验证的结果)。 至于想彻底解决重复的问题,还是得从xunsearch后端c/c++源码研究起,也许是未考虑到的bug,官方论坛有人反馈但无结果。 清泛网追记: xunsearch 1.4.14 版本存在此问题,从 1.4.15 版本起已解决该...
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术

...问0x4的内存地址,不crash才怪。于是,你一定会有如下的问题: 1)为什么不是 13行if语句出错?f.a被初始化为空了嘛,用空指针访问成员变量为什么不crash? 2)为什么会访问到了0x4的地址?靠,4是怎么出来的? 3)代码中的...
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Bill Gross超火爆演讲: 创业成功唯一最关键因素 - 资讯 - 清泛网 - 专注C/C++及内核技术

...业组织这么伟大,为什么他们中绝大部分都会失败?这个问题,是我想知道的,我希望找出真正能影响它们成功的关键性因素,而且,我想尝试用一种系统化的方式研究,以避免我一些直觉性的东西,以及因为过去经历我曾操盘...
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Invalid argument supplied for foreach()

... This is the only thing that worked for me. For some reason, PHP didn't believe that the multidimensional array I built was actually an array of arrays. – Justin Jul 29 '15 at 20:21 ...
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How are parameters sent in an HTTP POST request?

...ith easy access to the readily decoded values (like $_REQUEST or $_POST in PHP, or cgi.FieldStorage(), flask.request.form in Python). Now let's digress a bit, which may help understand the difference ;) The difference between GET and POST requests are largely semantic. They are also "used" diffe...
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How to make MySQL handle UTF-8 properly

...r should be in UTF-8 (see my.cnf). remember any languages you use (such as PHP) must be UTF-8 as well. Some versions of PHP will use their own MySQL client library, which may not be UTF-8 aware. If you do want to migrate existing data remember to backup first! Lots of weird choping of data can hap...
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How do I send a cross-domain POST request via JavaScript?

...u accomplish the cross domain POST from from.com/1.html to to.com/postHere.php (using PHP as an example). Note: you only need to set Access-Control-Allow-Origin for NON OPTIONS requests - this example always sets all headers for a smaller code snippet. In postHere.php setup the following: switch ...