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Why is there no Constant feature in Java?
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Every time I go from heavy C++ coding to Java, it takes me a little while to adapt to the lack of const-correctness in Java. This usage of const in C++ is much different than just declaring constant variables, if you didn't know. Essentially, it ensu...
Why is reading lines from stdin much slower in C++ than Python?
...anted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm misund...
Why should C++ programmers minimize use of 'new'?
...uires minimal bookkeeping and the next address to allocate is implicit.
In C++, this is called automatic storage because the storage is claimed automatically at the end of scope. As soon as execution of current code block (delimited using {}) is completed, memory for all variables in that block is ...
Is main() really start of a C++ program?
The section $3.6.1/1 from the C++ Standard reads,
11 Answers
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When do I use fabs and when is it sufficient to use std::abs?
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In C++, it's always sufficient to use std::abs; it's overloaded for all the numerical types.
In C, abs only works on integers, and you need fabs for floating point values. These are available in C++ (along with all of the C li...
When should std::move be used on a function return value? [duplicate]
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C++: bone simple. Clearly.
– Lightness Races in Orbit
Nov 11 '13 at 18:24
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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...generics and pre-processor features of the compiler. It is possible to use C++, C# or Java compiler. Any ideas???
13 Answer...
The application was unable to start correctly (0xc000007b)
...at the software was not developed on) has the appropriate Microsoft Visual C++ Redistributable Package. By appropriate, you need the right year and bit version (i.e. x86 for 32 bit and x64 for 64 bit) of the Visual C++ Redistributable Package.
The Visual C++ Redistributable Packages install run...
Switching between GCC and Clang/LLVM using CMake
...CMake honors the environment variables CC and CXX upon detecting the C and C++ compiler to use:
$ export CC=/usr/bin/clang
$ export CXX=/usr/bin/clang++
$ cmake ..
-- The C compiler identification is Clang
-- The CXX compiler identification is Clang
The compiler specific flags can be overridden b...
How to use the PI constant in C++
I want to use the PI constant and trigonometric functions in some C++ program. I get the trigonometric functions with include <math.h> . However, there doesn't seem to be a definition for PI in this header file.
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