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Difference between pre-increment and post-increment in a loop?
...tResult = i++;
Assert( postIncrementtResult == 3 );
Assert( i == 4 );
In C++, the pre-increment is usually preferred where you can use either.
This is because if you use post-increment, it can require the compiler to have to generate code that creates an extra temporary variable. This is because b...
The static keyword and its various uses in C++
The keyword static is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work.
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Is it safe to delete a void pointer?
...cific types.
As mentioned in other answers, this is undefined behavior in C++. In general it is good to avoid undefined behavior, although the topic itself is complex and filled with conflicting opinions.
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Where and why do I have to put the “template” and “typename” keywords?
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(See here also for my C++11 answer)
In order to parse a C++ program, the compiler needs to know whether certain names are types or not. The following example demonstrates that:
t * f;
How should this be parsed? For many languages a compiler do...
Why is volatile not considered useful in multithreaded C or C++ programming?
...le unnecessary. We can just remove the volatile qualifier entirely.
Since C++11, atomic variables (std::atomic<T>) give us all of the relevant guarantees.
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Passing variable arguments to another function that accepts a variable argument list
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Maybe throwin a rock in a pond here, but it seems to work pretty OK with C++11 variadic templates:
#include <stdio.h>
template<typename... Args> void test(const char * f, Args... args) {
printf(f, args...);
}
int main()
{
int a = 2;
test("%s\n", "test");
test("%s %d %d %p\n"...
What is the “assert” function?
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"assert usually raises an exception" -- in C++ it does not rise "exception" it calls abort... it is little bit different.
– Artyom
Oct 15 '09 at 10:55
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Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
... multipe forms to execute code in:
RenderScript (CPU and GPU)
Java (SDK)
C++ (NDK)
OpenGL (GPU)
It is quite obvious that when executing code the more native the solution the faster it will be. A run-time based language will never beat a language that directly runs on the CPU.
But on the other h...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
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I used to do C++ and ran into that exact same issue quite a few times. I recently read about Scala having "traits" that to me seem like something in between the "C++" way and the "Java" way of doing things.
– Niels B...
Is it possible to serialize and deserialize a class in C++?
Is it possible to serialize and deserialize a class in C++?
13 Answers
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