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App Inventor 2 手机AI伴侣进行测试时，为啥进度条卡在10%就一直不动？ - A...
...以体验试试{:8_378:}。原理详见：https://bbs.tsingfun.com/forum.php?mod=viewthread&tid=1411
What is the purpose and uniqueness SHTML?
... you don't have to repeat code as much. Changing one included file updates all of your pages at once. You just put it in your HTML page as per normal.
It's embedded in a standard XML comment, and looks like this:
<!--#include virtual="top.shtml" -->
It's been largely superseded by other m...
Practical non-image based CAPTCHA approaches?
...quite a good idea and is exactly the same as doing it in JavaScript. Good Call.
@AviD: I'm aware that this method is prone to direct attacks as I've mentioned on my blog. However, it will defend against your average spam bot which blindly submits rubbish to any form it can find.
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Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
shell> ldd /path/to/nginx
libluajit-<VERSION>.so => not found
此类问题通常使用ldconfig命令就能解决：
shell> echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf
shell> ldconfig
再试着启动Nginx看看，应该就OK了。
应用
我们先用一个简单的程序...
How can I post data as form data instead of a request payload?
In the code below, the AngularJS $http method calls the URL, and submits the xsrf object as a "Request Payload" (as described in the Chrome debugger network tab). The jQuery $.ajax method does the same call, but submits xsrf as "Form Data".
...
Grep for literal strings
...le, as part of a line in a seperate log file. The search text can contain all sorts of regex special characters, e.g., []().*^$-\ .
...
Writing a git post-receive hook to deal with a specific branch
...oks pushes to Assembla.
What i need is to push only one branch (master, ideally) when someone pushes changes to that branch on our server, and ignore pushes to other branches. Is it possible to select the branch from a bare repo and push only that branch to Assembla?
...
“hello, world” 起源及其他 - 创意 - 清泛网 - 专注C/C++及内核技术
...章（我的hello world）、环境搭建成功后的第一个测试…
问题的提出
相传古时候有个退休的程序员，在家闲来无事，决定修习书法之道。第一日，备好笔墨纸砚，便挥毫写下一行大字：“hello, world”。
学过编程语言的人都笑了...
c/c++ volatile和mutable关键字 - C/C++ - 清泛网 - 专注C/C++及内核技术
...automatic variables)
3) 多线程应用中被几个任务共享的变量
问题：
1)一个参数既可以是const还可以是volatile吗？解释为什么。
2); 一个指针可以是volatile 吗？解释为什么。
3); 下面的函数有什么错误：
int square(volatile int *ptr)
{
...
WhatsApp比微信好在哪里？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...免费”，而“增值服务”收费，但是这种商业模式带来的问题是，一个越来越庞大臃肿的应用，一个越来越脱离其核心功能的应用。
总结
可见，WhatsApp成功的一大因素就是“专注”，坚持其工具属性，因为是付费应用，因此就...