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Generate colors between red and green for a power meter?
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The accepted answer didn't even really answer the question...
C++
Here's a simple C++ code segment from my engine that linearly and efficiently interpolates between three arbitrary colors:
const MATH::FLOAT4 color1(0.0f, 1.0f, 0.0f, 1.0f); // Green
const MATH::FLOAT4 color2(1.0f, 1.0...
Why is there an injected class name?
Recently, I saw a strange C++ feature: injected class name .
1 Answer
1
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Designing function f(f(n)) == -n
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Thanks to overloading in C++:
double f(int var)
{
return double(var);
}
int f(double var)
{
return -int(var);
}
int main(){
int n(42);
std::cout<<f(f(n));
}
shar...
How to disallow temporaries
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@didierc no, Foo::Foo("hi") is disallowed in C++.
– Johannes Schaub - litb
Oct 31 '12 at 22:42
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How do I add a linker or compile flag in a CMake file?
... clean, but easy and convenient, and works only for compile flags, C & C++ at once):
add_definitions(${GCC_COVERAGE_COMPILE_FLAGS})
Appending to corresponding CMake variables:
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}")
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LIN...
How to document Python code with doxygen [closed]
...in a standard Python docstring format. I use it to document a large mixed C++ and Python game application framework, and it's working well.
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Sell me on const correctness
...ble? It seems to me that using const can be more of a pain than a help in C++. But then again, I'm coming at this from the python perspective: if you don't want something to be changed, don't change it. So with that said, here are a few questions:
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How can you iterate over the elements of an std::tuple?
How can I iterate over a tuple (using C++11)? I tried the following:
20 Answers
20
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Unnecessary curly braces in C++?
...scope, where you can more "cleanly" declare new (automatic) variables.
In C++ this is maybe not so important since you can introduce new variables anywhere, but perhaps the habit is from C, where you could not do this until C99. :)
Since C++ has destructors, it can also be handy to have resources ...
What's the most efficient way to erase duplicates and sort a vector?
I need to take a C++ vector with potentially a lot of elements, erase duplicates, and sort it.
23 Answers
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