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I am doing Visual c++ programming, I have created a CLR console application. I have noticed that String arrays should be declared like String ^, not String[]. What is the use of ^? And why is it being used instead of []? And is this substitution limited only to CLR applications? Here is a line of the code and the error:
array<String[]>[] abc;
the errors generated were
error C2143: syntax error : missing ';' before '['
error C2146: syntax error : missing ';' before identifier 'abc'
eror C2065: 'abc' : undeclared identifier
767
?? Operator (C# Reference) The ?? operator is called the null-coalescing operator and is used to define a default value for a nullable value types as well as reference types. It returns the left-hand operand if it is not null; otherwise it returns the right operand.
For example, arithmetic operators perform arithmetic operations with operands of built-in numeric types and Boolean logical operators perform logical operations with the bool operands. A user-defined type can overload certain operators to define the corresponding behavior for the operands of that type.
C# provides a number of operators supported by the built-in types. For example, arithmetic operators perform arithmetic operations with numeric operands and Boolean logical operators perform logical operations with the bool operands.
C# Assignment Operators Assignment operators are used to assign values to variables. In the example below, we use the assignment operator (=) to assign the value 10 to a variable called x:
The circumflex accent means that the object is a managed pointer,it'll be automatically collected by the Garbage Collector - you don't need to do this implicitly. Please take a look at this article to understand how arrays work in C++/CLI.
In your case:
array<String^> ^abc;
And is this substitution limited only to CLR applications?
Yes.
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