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如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C++内核技术
如何选择机器学习算法Choosing-a-Machine-Learning-Classifier如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试不同的参数），...
Function overloading by return type?
...m, and that makes this task as natural for the human reader as possible."
C++ (subsection 7.4.1of Bjarne Stroustrup's "The C++ Programming Language"): "Return types are not considered in overload resolution. The reason is to keep resolution for an individual operator or function call context-indep...
Is there a way to instantiate objects from a string holding their class name?
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Nope, there is none, unless you do the mapping yourself. C++ has no mechanism to create objects whose types are determined at runtime. You can use a map to do that mapping yourself, though:
template<typename T> Base * createInstance() { return new T; }
typedef std::map<s...
C++ Double Address Operator? (&&)
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This is C++11 code. In C++11, the && token can be used to mean an "rvalue reference".
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C++ Convert string (or char*) to wstring (or wchar_t*)
...interest, then your problem can be fully solved with the standard library (C++11 and newer) alone.
The TL;DR version:
#include <locale>
#include <codecvt>
#include <string>
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
std::string narrow = convert...
ACE vs Boost vs POCO [closed]
I have been working with the Boost C++ Libraries for quite some time. I absolutely love the Boost Asio C++ library for network programming. However I was introduced to two other libraries: POCO and Adaptive Communication Environment (ACE) framework . I would like to know the good and bad of ...
How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
... suffice. The __STDC_FORMAT_MACROS macro is only required for inclusion in C++.
– Jens Gustedt
Nov 15 '11 at 8:05
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What is the difference between LR, SLR, and LALR parsers?
... This matters a lot when trying to deal to non-academic langauges such as C++ or Fortran, where you literally needs thousands of rules to handle the entire language well, and you don't want to spend your life trying to hack the grammar rules to meet the limitations of LALR (or even LR).
As a sort ...
线程访问窗口资源的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...窗口句柄和窗口类对象的映射表，就是Windows对象(句柄)和C++对象的一个映射，它是在窗口调用CWnd::Create()，CWnd::CreateEx()时，就添加到映射表里的。映射表的一个重要的特征，它只存于一个线程当中。当你在B线程使用A线程的窗口...
round() for float in C++
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It's available since C++11 in cmath (according to http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf)
#include <cmath>
#include <iostream>
int main(int argc, char** argv) {
std::cout << "round(0.5):\t" <<...