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社会化海量数据采集爬虫框架搭建 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...些限制防止机器人爬虫系统爬取数据，一般一个账号爬取不了多久就会被检测出来被禁止访问了。那是不是我们就不能爬取这些网站的数据呢？肯定不是这样的，只要社会化网站不关闭网页访问，正常人能够访问的数据，我们也...
淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...于请求的先后，靠后的请求自然也没有库存了，也根本到不了最后的下单步骤，所以真正的并发写就非常有限了。其实这种设计思路目前也非常普遍，如支付宝的“咻一咻”已及微信的摇一摇。
除了在前端通过答题在用户端进...
What is the difference between ManualResetEvent and AutoResetEvent in .NET?
... they execute and wait (WaitOne()). Think about these guys are soccer team players and if one player says I will wait until manager calls me, and others will wait until manager tells them to continue (Set())
public class AutoResetEventSample
{
private AutoResetEvent autoReset = new AutoResetEve...
Prevent HTML5 video from being downloaded (right-click saved)?
...ings in a context menu than just Save As.
You could also use custom video player libraries. Most of them implement video players that customize the context menu to your liking. So you don't get the default browser context menu. And if ever they do serve a menu item similar to Save As, you can disab...
站长投放广告绝对不做的事:Google Adsense和百度联盟广告违规分析 - 更多技...
...投放（特殊内容包括但不限于翻页按钮、导航链接、视频播放窗口、在线小游戏加载）
2、可以看出，百度禁止所谓的“与正文混排”的投放广告模式，并不是像网上所流传的那样禁止将广告放在文章内页与文字“混搭”，而...
Live-stream video from one android phone to another over WiFi
... playback functionality in your app, using off-the-shelf streaming app and player is a reasonable choice.
If you do need them to be in your app, however, you will have to look into MediaRecorder API (for the server/camera app) and MediaPlayer (for client/player app).
Quick sample code for the se...
What does “pending” mean for request in Chrome Developer Window?
...lems with pending request for mp3 files.
I had a list of mp3 files and one player to play them. If I picked a file that had already been downloaded, Chrome would block the request and show "pending request" in the network tab of the developer tools.
All versions of Chrome seem to be affected.
Here...
Getting the index of the returned max or min item using max()/min() on a list
...) . In other words, I need to know which move produced the max (at a first player's turn) or min (second player) value.
23 ...
How to embed a SWF file in an HTML page?
...nd standards-friendly method to embed Flash content.
It also offers Flash player version detection. If the user does not have the version of Flash required or has JavaScript disabled, they will see an alternate content. You can also use this library to trigger a Flash player upgrade. Once the user ...
String formatting in Python 3
...0%}".format(self.goals / self.shots) # '20%'
"self: {!s}".format(self) # 'Player: Bob'
"self: {!r}".format(self) # '<__main__.Player instance at 0x00BF7260>'
"games: {:>3}".format(player1.games) # 'games: 123'
"games: {:>3}".format(player2.games) # 'games: 4'
"games: {:0>3}".for...