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What is “stdafx.h” used for in Visual Studio?
...n I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don't/can't use this header file.
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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...tion pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable icc , will eliminate the library call for pow(a,6) .)
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Are global variables bad? [closed]
In C/C++, are global variables as bad as my professor thinks they are?
28 Answers
28
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Initialization of all elements of an array to one default value in C++?
C++ Notes: Array Initialization has a nice list over initialization of arrays. I have a
13 Answers
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Why are preprocessor macros evil and what are the alternatives?
...er be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alternative after so many years?
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Go > operators
... power of 2) in other languages, but because Go is a safer language than C/C++ it does some extra work when the shift count is a number.
Shift instructions in x86 CPUs consider only 5 bits (6 bits on 64-bit x86 CPUs) of the shift count. In languages like C/C++, the shift operator translates into a ...
Declaring variables inside loops, good practice or bad practice?
...y information
The open-source tool CppCheck (a static analysis tool for C/C++ code) provides some excellent hints regarding optimal scope of variables.
In response to comment on allocation:
The above rule is true in C, but might not be for some C++ classes.
For standard types and structures, the ...
Why does volatile exist?
What does the volatile keyword do? In C++ what problem does it solve?
18 Answers
18
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What is move semantics?
...oftware Engineering radio podcast interview with Scott Meyers regarding C++0x . Most of the new features made sense to me, and I am actually excited about C++0x now, with the exception of one. I still don't get move semantics ... What is it exactly?
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How to write a large buffer into a binary file in C++, fast?
... setups:
Laptop, Core i7, SSD, Ubuntu 16.04, g++ Version 7.2.0 with -std=c++11 -march=native -O3
Desktop, Core i7, SSD, Windows 10, Visual Studio 2017 Version 15.3.1 with /Ox /Ob2 /Oi /Ot /GT /GL /Gy
Which gave the following measurements (after ditching the values for 1MB, because they were obvi...