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20. The operators |, &, and ~ act on individual bits in parallel. They can be used only on integer types. a | b does an independent OR operation of each bit of a with the corresponding bit of b to generate that bit of the result. The operators ||, &&, and ! act on each entire operand as a single true / false value.
Go to Configuration Properties, C/C++, Generate, verify you point to the abc.lib location under Additional Include Directories. Under Linker, Input, make sure you have the abc.lib under Additional Dependencies.
This is C++/CLI and the caret is the managed equivalent of a * (pointer) which in C++/CLI terminology is called a 'handle' to a 'reference type' (since you can still have unmanaged pointers). (Thanks to Aardvark for pointing out the better terminology.) edited Apr 16, 2019 at 21:20.
In C++ the “^” symbol is the bitwise exclusive or (xor) operator. For a single bit you have 0 ^ 0 = 1 ^ 1 = 0 and 0 ^ 1 = 1 ^ 0 = 1. However, in the question you are refering to it is part of Microsoft special syntax for C++ development on the .NET platform known as C++/CLI or It Just Works. Memory on .NET is garbage collected and ...
The & has more the one meanings:. 1) take the address of a variable. int x; void* p = &x; //p will now point to x, as &x is the address of x
56. :: is the scope resolution operator - used to qualify names. In this case it is used to separate the class AirlineTicket from the constructor AirlineTicket(), forming the qualified name AirlineTicket::AirlineTicket() You use this whenever you need to be explicit with regards to what you're referring to. Some samples: namespace foo {.
It's most commonly used in assignment operations, although it has other uses as well. The ternary operator ? is a way of shortening an if-else clause, and is also called an immediate-if statement in other languages (IIf(condition,true-clause,false-clause) in VB, for example). For example: bool Three = SOME_VALUE;
in C++ expression a % b returns remainder of division of a by b (if they are positive. For negative numbers sign of result is implementation defined). For example: 5 % 2 = 1. 13 % 5 = 3. With this knowledge we can try to understand your code. Condition count % 6 == 5 means that newline will be written when remainder of division count by 6 is five.
At least as it's normally used in modular arithmetic, the modulus is always positive, so the first result does not correspond to a modulus. C89/90 and C++98/03 allow either answer though, as long as / and % produce answers that work together so you can reproduce the input (i.e. -1x2+-1->-3, -2x2+1=-3). For newer versions of the standards (C99 ...
is that in the former case you are guaranteed that myname is non-null, since C++ does not allow NULL references. Since you are passing by reference, the object is not copied, just like if you were passing a pointer. Your second example: const string &GetMethodName() { ...