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...操作任何数据库。可以订单数够后，停止秒杀，然后批量写数据库。而且秒杀的商品不多。火车票这个不是像秒杀那么简单的，春运时间，几乎所有的票都是热门票，而且几乎是全国人民都来了，而且还有转车业务，多条线的库...
How can I create a “Please Wait, Loading…” animation using jQuery?
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Along with what Jonathan and Samir suggested (both excellent answers btw!), jQuery has some built in events that it'll fire for you when making an ajax request.
There's the ajaxStart event
Show a loading message whenever an AJAX request starts (and none is already active...
Measuring text width to be drawn on Canvas ( Android )
...he methods measureText() and getTextPath()+computeBounds() and build up an Excel with all text attributes for fixed size font that can be found under https://github.com/ArminJo/android-blue-display/blob/master/TextWidth.xlsx .
There you will find also simple formulas for other text attributes like a...
What does Expression.Quote() do that Expression.Constant() can’t already do?
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This question has already received an excellent answer. I'd additionally like to point to a resource that can prove helpful with questions about expression trees:
There is was a CodePlex project by Microsoft called Dynamic Language Runtime. Its documentation inc...
What Are Some Good .NET Profilers?
...ures of ANTS and Scitech .NET Memory Profiler
Real-time analysis feature
Excellent how-to videos on their web sites
Easy to use
Reasonably performant (obviously slower than without the profiler attached, but not so much you become frustrated)
Show instances of leaking objects
Basically they both d...
T-SQL split string
... sqlservercentral.com/articles/Tally+Table/72993 is far better. Some other excellent set based options can be found here. sqlperformance.com/2012/07/t-sql-queries/split-strings
– Sean Lange
Apr 26 '18 at 18:45
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Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...目录映射到本地虚拟磁盘的功能。
远程服务端是用Python写的，主要是将远程主机上的目录文件传给客戶端，在这里就不细说了。
Dokan客户端则由Delphi开发，其参考代码来自网络上的Delphi例子，比如Mirror Driver。
本篇文章主要是...
2 column div layout: right column with fixed width, left fluid
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Excellent answer! Here's a working example on Codepen: codepen.io/martinkrulltott/pen/yNxezM
– Martin
Jul 21 '15 at 1:40
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What is the difference between a route and resource in New Router API?
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Excellent summary of an excellent post. But the last quote you include doesn't make sense: That namespace will have an " which [...]. What does the " mean? Is it just a placeholder for Route | Controller | View?
...
How to import CSV file data into a PostgreSQL table?
... Each person has his own solution but what I usually do is open the CSV in Excel, copy the headers, paste special with transposition on a different worksheet, place the corresponding data type on the next column then just copy and paste that to a text editor together with the appropriate SQL table c...