Menu
Has a new symbol joined the C++ language specification while I was sleeping under a rock?
I just encountered the following question:
Restrict Text Box to only accept 10 digit number
Which suggests that the '^' symbol is somehow part of C++ (not in the legacy meaning of a bitwise-XOR)
Is this so?
If so, what does it mean? (I tried to google the question but Google didn't come up with satisfactory answers)
942
%s is for string %d is for decimal (or int) %c is for character.
The #define symbol is a constant and macro that the preprocessor expands before compilation. No storage is allocated for these symbols. They have no type, and the debugger cannot reference them.
Use of Character Set in C These are known as the characters in C. They include digits, alphabets, special symbols, etc.
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 references to objects will have to be tracked. This makes it impossible to reference these objects using a normal C++ pointer. Microsoft has decided to reuse the “^” symbol to declare a variable somewhat similar to a pointer that can reference an object on the managed heap.
^ (Handle to Object on Managed Heap)
121
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
