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How do I find the length of an array?
...< (sizeof(p)/sizeof(*p)) << std::endl;
}
int a[7];
func(a);
In C++, if you want this kind of behavior, then you should be using a container class; probably std::vector.
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Force line-buffering of stdout when piping to tee
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This fixed my issue on OS X Catalina with a C++ program which was printf()ing and I was piping to tee but was only seeing the output when the program had finished.
– jbaxter
Jan 15 at 6:41
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Is there a performance difference between i++ and ++i in C?
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The question explicitly states C, no reference to C++.
– Dan Cristoloveanu
Oct 10 '08 at 23:00
5
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Why do we need a pure virtual destructor in C++?
...al destructor. But why do we need a pure virtual destructor? In one of the C++ articles, the author has mentioned that we use pure virtual destructor when we want to make a class abstract.
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Should I use #define, enum or const?
In a C++ project I'm working on, I have a flag kind of value which can have four values. Those four flags can be combined. Flags describe the records in database and can be:
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Guaranteed lifetime of temporary in C++?
Does C++ provide a guarantee for the lifetime of a temporary variable that is created within a function call but not used as a parameter? Here's an example class:
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Is #pragma once a safe include guard?
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Should make it into C++20.
– Ionoclast Brigham
Sep 2 '17 at 4:22
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Can I call a base class's virtual function if I'm overriding it?
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The C++ syntax is like this:
class Bar : public Foo {
// ...
void printStuff() {
Foo::printStuff(); // calls base class' function
}
};
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Operator overloading in Java
...for floating point, which can be a bit of a surprise for those with a C or C++ background.
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Immutable vs Mutable types
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The key difference between Python's semantics and C++ pass-by-reference semantics is that assignment is not mutation in Python, and it is in C++. (But of course that's complicated by the fact that augmented assignment, like a += b sometimes is mutation. And the fact that ass...