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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
... functions by themselves need to lock the mutex, then recursive mutex is a win-win.
For any other case (solving just bad coding, using it even in different objects) is clearly wrong!
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Is there an equivalent of 'which' on the Windows command line?
...e path), I would like to be able to find the full path to a program on the Windows command line, given just its name.
26 An...
What exactly are DLL files, and how do they work?
...ere are 2 types of libraries. Static libraries and dynamic libraries. In windows the file extensions are as follows: Static libraries (.lib) and dynamic libraries (.dll). The main difference is that static libraries are linked to the executable at compile time; whereas dynamic linked libraries ar...
How do you run CMD.exe under the Local System Account?
...ning Vista and I would like to manually complete the same operations as my Windows Service. Since the Windows Service is running under the Local System Account, I would like to emulate this same behavior. Basically, I would like to run CMD.EXE under the Local System Account.
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When should I use Inline vs. External Javascript?
...y dominate transfer time by factor 20 or more, which is now your amortized window for server-side processing of the <dynamic> portion.
It takes about 50ms for the browser (chrome, rest maybe 20% slower) to process inline jquery + signalr + angular + ng animate + ng touch + ng routes + lodash....
How to detect Safari, Chrome, IE, Firefox and Opera browser?
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Only use the browser detection method if it's truly necessary, such as showing browser-specific instructions to install an extension. Use feature detection when possible.
Demo: https://jsfiddle.net/6spj1059/
// Opera 8.0+
var isOpera = (!!window.opr && !!opr.addons) || !!window.opera ||...
java get file size efficiently
...gth. If we try to get rid of these things then for one call I get the following times in microseconds:
file sum___19.0, per Iteration___19.0
raf sum___16.0, per Iteration___16.0
channel sum__273.0, per Iteration__273.0
For 100 runs and 10000 iterations I get:
file sum__1767629.0, per...
Join vs. sub-query
...version-specific and query-specific.
Historically, explicit joins usually win, hence the established wisdom that joins are better, but optimisers are getting better all the time, and so I prefer to write queries first in a logically coherent way, and then restructure if performance constraints warr...
如何建立一套适合自己的高胜算交易系统 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个交易系统很明确。不谈交易之前的分析策略，从交易一开始，交易系统最终要牢牢把握的就是三点(一个买点与二个卖点——止益目标点与风险控制点)，从而在不明确的市场中以概率的方式获胜(截短扬长)从而获取总的利润。
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What is the optimal algorithm for the game 2048?
... in action or read the source.
Currently, the program achieves about a 90% win rate running in javascript in the browser on my laptop given about 100 milliseconds of thinking time per move, so while not perfect (yet!) it performs pretty well.
Since the game is a discrete state space, perfect informa...