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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
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Using GHC 7.0.3, gcc 4.4.6, Linux 2.6.29 on an x86_64 Core2 Duo (2.5GHz) machine, compiling using ghc -O2 -fllvm -fforce-recomp for Haskell and gcc -O3 -lm for C.
Your C routine runs in 8.4 seconds (faster than your run probably because ...
Swift Beta performance: sorting arrays
...quicksort_c(l, a + n - l);
}
Both work:
var a_swift:CInt[] = [0,5,2,8,1234,-1,2]
var a_c:CInt[] = [0,5,2,8,1234,-1,2]
quicksort_swift(&a_swift, 0, a_swift.count)
quicksort_c(&a_c, CInt(a_c.count))
// [-1, 0, 2, 2, 5, 8, 1234]
// [-1, 0, 2, 2, 5, 8, 1234]
Both are called in the same pr...
How can I read SMS messages from the device programmatically in Android?
...d Feb 16 '15 at 11:49
18446744073709551615
14k22 gold badges7676 silver badges110110 bronze badges
answered Feb 29 '12 at 6:27
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Why aren't variable-length arrays part of the C++ standard?
...
jchamp
17433 silver badges1111 bronze badges
answered Dec 11 '09 at 10:28
Johannes Schaub - litbJohannes Schaub...
Find the nth occurrence of substring in a string
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3
Thanks, I like your one liner. I don't think it's the most instantly readable thing in the world, but it's not much worse then most others b...
How do function pointers in C work?
...have a pointer to the function, let's use it:
int sum = (*functionPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to ...
How to find out what type of a Mat object is with Mat::type() in OpenCV
...e CV_16U: r = "16U"; break;
case CV_16S: r = "16S"; break;
case CV_32S: r = "32S"; break;
case CV_32F: r = "32F"; break;
case CV_64F: r = "64F"; break;
default: r = "User"; break;
}
r += "C";
r += (chans+'0');
return r;
}
If M is a var of type Mat you can call it ...
ios程序员和android程序员的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...序员依旧冷冷的回答，因为我特么要开发的游戏需要支持3寸，3.2寸，3.5寸，3.7寸，3.8寸，3.9寸，4寸，4.1寸，4.2 寸，4.3寸，4.5寸，4.7寸，4.8寸，5寸，5.5寸，5.7寸，6.8寸，7寸，7.2寸，7.5寸，7.8寸，8寸，8.7寸，8.8 寸，8.9寸，9寸，9...
虚拟机ubuntu与宿主机NAT方式设定静态IP共享上网 - 更多技术 - 清泛网 - 专...
...打开链接
宿主机平台：win7
虚拟机：Vmware workstation 6.0.0.3 + ubuntu 10.10
完整安装后的VMware Workstation会在本地连接中多了两个虚拟网卡，一个是VMware Network Adapter for VMnet1 .另一个是 VMware Network Adapter for VMnet8。注意：确保VMnet8处...
基于Windows平台的反Rootkit原理与实现 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
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1.3 主要工作 ................................ ................................ ................................ ............ 2
第二章 WindowsWindows 应用层开发 应用层开发 ................................ ........