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Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
... make the C runtime library usable & consistent in the new thread.
In C++ you should almost certainly use _beginthreadex() unless you won't be linking to the C runtime library at all (aka MSVCRT*.dll/.lib).
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Read whole ASCII file into C++ std::string [duplicate]
I need to read a whole file into memory and place it in a C++ std::string .
9 Answers
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How to float 3 divs side by side using CSS?
...le:
<div style="width: 500px;">
<div style="float: left; width: 200px;">Left Stuff</div>
<div style="float: left; width: 100px;">Middle Stuff</div>
<div style="float: left; width: 200px;">Right Stuff</div>
<br style="clear: left;" />
</div>
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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...
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...
一文讲透区块链技术原理 - 资讯 - 清泛网 - 专注C/C++及内核技术
...（ECDSA）来实现去中心化的P2P系统设计。但区块链的作用不仅仅局限在比特币上。现在，人们在使用“区块链”这个词时，有的时候是指数据结构，有时是指数据库，有时则是指数据库技术，但无论是哪种含义，都和比特币没有...
how to rotate a bitmap 90 degrees
...g.width();
int height = bitmapOrg.height();
int newWidth = 200;
int newHeight = 200;
// calculate the scale - in this case = 0.4f
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// createa matr...
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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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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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...