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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
..., take a look at this excellent answer: https://stackoverflow.com/a/11227902/1001643
Compilers typically don't have enough information to know which branches will alias and whether those aliases will be significant. However, that information can be determined at runtime with tools such as Cachegr...
How to convert string to char array in C++?
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Simplest way I can think of doing it is:
string temp = "cat";
char tab2[1024];
strcpy(tab2, temp.c_str());
For safety, you might prefer:
string temp = "cat";
char tab2[1024];
strncpy(tab2, temp.c_str(), sizeof(tab2));
tab2[sizeof(tab2) - 1] = 0;
or could be in this fashion:
string temp = "ca...
foreach vs someList.ForEach(){}
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edited Jun 30 '16 at 13:16
answered Oct 22 '08 at 14:50
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boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...er性能测试
原文地址：http://blog.csdn.net/gongxinheng/archive/2010/03/27/5421914.aspx
by: HengStar 2010/3/27
我是一名游戏开发程序员，研究C++ Boost库已经有一小段时日了，学的越多愈发愈感觉出它的强大，每次学习后在实战项目中高效地使...
How to start working with GTest and CMake
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10 Answers
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What is the difference between a HashMap and a TreeMap? [duplicate]
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edited Mar 15 '10 at 0:08
answered Mar 15 '10 at 0:02
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Redirect from an HTML page
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Try using:
<meta http-equiv="refresh" content="0; url=http://example.com/" />
Note: Place it in the head section.
Additionally for older browsers if you add a quick link in case it doesn't refresh correctly:
<p><a href="http://example.com/">Redirect<...
How to convert string to Title Case in Python?
...eded).
– Andrew Clark
Dec 1 '11 at 20:10
18
For the record, a neater way to do the last CamelCase...
What is the easiest way to initialize a std::vector with hardcoded elements?
...= {16,2,77,29};
vector<int> vec (arr, arr + sizeof(arr) / sizeof(arr[0]) );
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To ternary or not to ternary? [closed]
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Use it for simple expressions only:
int a = (b > 10) ? c : d;
Don't chain or nest ternary operators as it hard to read and confusing:
int a = b > 10 ? c < 20 ? 50 : 80 : e == 2 ? 4 : 8;
Moreover, when using ternary operator, consider formatting the code in a way t...