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Reading and writing binary file
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If you want to do this the C++ way, do it like this:
#include <fstream>
#include <iterator>
#include <algorithm>
int main()
{
std::ifstream input( "C:\\Final.gif", std::ios::binary );
std::ofstream output( "C:\\myfile.gif", ...
What is the strict aliasing rule?
...ably has instructions to load buff's contents. Then again, maybe you're in C++ and this is some templated header only implementation that the compiler thinks it can inline. Or maybe it's just something you wrote in your .c file for your own convenience. Anyway undefined behavior might still ensue. E...
Why is f(i = -1, i = -1) undefined behavior?
...ans a type like a int, float, or a pointer (see What is a scalar Object in C++?).
Second, it may seem more obvious that
f(++i, ++i);
would have undefined behavior. But
f(i = -1, i = -1);
is less obvious.
A slightly different example:
int i;
f(i = 1, i = -1);
std::cout << i <<...
When to use std::begin and std::end instead of container specific versions [duplicate]
...ld probably use c.begin() due to inertia. I would expect new text books on C++ to recommend the free function version (as it is never worse and sometimes better), but that has to catch up with common usage.
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Linux C/C++程序常用的调试手段及异常排查总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
Linux C/C++程序常用的调试手段及异常排查总结linux_cpp_debug_summary痛并快乐着今天讲讲C C++程序的常用调试手段，介绍调试手段之前，我会首先对开发过程中可能遇到的问题进行一个总结，大概可以把问题分为以下几类：必现的程序...
How to programmatically cause a core dump in C/C++
I would like to force a core dump at a specific location in my C++ application.
10 Answers
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Hidden Features of Visual Studio (2005-2010)?
...is can be found in edit.cycleclipboardring in keyboard mappings (in visual c++ this is Ctrl-Shift-Insert, not Ctrl-Shift-V)
– Default
Jun 20 '10 at 12:20
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What are the differences between Clojure, Scheme/Racket and Common Lisp?
... Scheme :)
In fact allot of software some folks think might be written in C++ was probably done under the Lisp umbrella, its hard to pick out the golden apples out of the bunch. The fact is C++ was not always popular, it only seems to be popular today because of a history of updates. For the lesser...
How does BLAS get such extreme performance?
... block.
For purely numerical tasks, Fortran is pretty much unbeatable, and C++ takes a lot of coaxing to get up to a similar speed. It can be done, and there are a few libraries demonstrating it (typically using expression templates), but it's not trivial, and it doesn't just happen.
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Why would I ever use push_back instead of emplace_back?
C++11 vectors have the new function emplace_back . Unlike push_back , which relies on compiler optimizations to avoid copies, emplace_back uses perfect forwarding to send the arguments directly to the constructor to create an object in-place. It seems to me that emplace_back does everything p...