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Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...器上尤其明显:
当回调耗时较长时,反应迟钝.
在多核的系统上无能为力
如果你发觉你陷入了这种困扰,可以替代的方法是建立一个boost::asio::io_service::run()的线程池.然而这样就允许回调函数并发执行.所以,当回调函数需要访问...
How to return a string value from a Bash function
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On a mac ($ bash --version GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin14) Copyright (C) 2007 Free Software Foundation, Inc.), it is correct that a matching global variable is initialized, but when I try to side-effect...
Is Python strongly typed?
...elf that offers such protection, as anyone who ever coded on, say, Classic Mac OS or Win16 can tell you.
Traditional Lisp allowed similar kinds of hackery; on some platforms, double-word floats and cons cells were the same type, and you could just pass one to a function expecting the other and it w...
Why aren't variable-length arrays part of the C++ standard?
...atically be freed when the stack unwinds.
Quick note: As mentioned in the Mac OS X man page for alloca(3), "The alloca() function is machine and compiler dependent; its use is dis-couraged." Just so you know.
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How serious is this new ASP.NET security vulnerability and how can I workaround it?
...tion: Padding is invalid and cannot be removed and Validation of viewstate MAC failed
The way to track the attacker is to check the padding is invalid. With a simple procedure you can track them down and block them - they need some thousands of call on your page to find the key !
Update 1.
I have...
How should you build your database from source control?
...community wiki
3 revs, 2 users 96%Mac
add a comment
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Is R's apply family more than syntactic sugar?
... and R version... and in an absolute sense CPU. I just ran with 2.15.2 on Mac and got sapply 50% slower than for and lapply twice as fast.
– John
Jan 13 '13 at 0:08
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Java 8: performance of Streams vs Collections
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}
return Math.sqrt(input);
}
I change the code a bit, ran on my mac book pro which has 8 cores, I got a reasonable result:
Collections: Elapsed time: 1522036826 ns (1.522037 seconds)
Streams: Elapsed time: 4315833719 ns (4.315834 seconds)
Parallel streams: Elapsed time: 2611...
What's the difference between a catalog and a schema in a relational database?
...stgres.
Cluster = A Postgres Installation
When you install Postgres on a machine, that installation is called a cluster. ‘Cluster’ here is not meant in the hardware sense of multiple computers working together. In Postgres, cluster refers to the fact that you can have multiple unrelated databa...
How to remove/delete a large file from commit history in Git repository?
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Mac instructions and some other info appear in the original linked post
– nruth
Mar 5 '18 at 18:55
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