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Should switch statements always contain a default clause?
...switch. Also, in some languages you can assign integer values to enums. In C++ enum MyEnum { FOO = 0, BAR = 1 }; MyEnum value = (MyEnum)2; makes a valid MyEnum instance that is not equal to FOO or BAR. If either of these issues would cause an error in your project, a default case will help you find ...
What is the difference between #include and #include “filename”?
In the C and C++ programming languages, what is the difference between using angle brackets and using quotes in an include statement, as follows?
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What are some better ways to avoid the do-while(0); hack in C++?
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+1. This is also a good answer. In C++11, the isolated function can be a lambda, as it can also capture the local variables, so makes things easy!
– Nawaz
Aug 29 '13 at 10:18
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Proper stack and heap usage in C++?
...r actually had to manage memory on my own. I recently began programming in C++ and I'm a little confused as to when I should store things on the stack and when to store them on the heap.
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What does extern inline do?
...U89 "static inline". This is the only portable one between gnu89 and c99
C++:
A function that is inline anywhere must be inline everywhere, with the same definition. The compiler/linker will sort out multiple instances of the symbol. There is no definition of static inline or extern inline, thoug...
How to use QueryPerformanceCounter?
...!), on this MSDN page you can find the source for a simple, useful HRTimer C++ class that wraps the needed system calls to do something very close to what you require (it would be easy to add a GetTicks() method to it, in particular, to do exactly what you require).
On non-Windows platforms, there'...
Assign one struct to another in C
... is now difficult to know which struct instance owns the data. This is why C++ invented the concept of user-definable assignment operators - you can write specific code to handle this case.
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Non-type template parameters
...), the objects must have static storage duration and linkage (external pre C++11, internal or external in C++11), so that pointers to them can be created at compile time.
– Theodore Murdock
Jan 29 '16 at 20:40
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What is the difference between NULL, '\0' and 0?
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Note: This answer applies to the C language, not C++.
Null Pointers
The integer constant literal 0 has different meanings depending upon the context in which it's used. In all cases, it is still an integer constant with the value 0, it is just described in different way...
vector::at vs. vector::operator[]
... its boundary checking, which is also discussed in similar questions like C++ Vector at/[] operator speed or ::std::vector::at() vs operator[] << surprising results!! 5 to 10 times slower/faster! . I just don't understand what the at() method is good for.
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