C++/CLI: Declaring a constant array

  • Thread starter Thread starter longbrmb
  • Start date Start date
L

longbrmb

I'm new to C++/CLI and my main background is Java. I'm trying to
create an array of constants as a static member of a class. An
example is shown below:

public ref class TestClass {
public:
static const array<constant int>^ stuff = {1,2,3,4,5};
};

This gives me compiler error C4538 which basically says that you can't
declare an array as constant. So that means that the values in my
array can't be changed, but nothing stops someone from assigning a new
array to the "stuff" variable. Am I missing something or is it not
possible to create a fixed array of constants?
 
public ref class TestClass {
public:
static const array<constant int>^ stuff = {1,2,3,4,5};
};

This gives me compiler error C4538 which basically says that you can't
declare an array as constant.
Click to expand...

Try `literal' instead of `static const'.

Tom
 
I'm new to C++/CLI and my main background is Java. I'm trying to
create an array of constants as a static member of a class. An
example is shown below:

public ref class TestClass {
public:
static const array<constant int>^ stuff = {1,2,3,4,5};
};

This gives me compiler error C4538 which basically says that you can't
declare an array as constant. So that means that the values in my
array can't be changed, but nothing stops someone from assigning a new
array to the "stuff" variable. Am I missing something or is it not
possible to create a fixed array of constants?
Click to expand...

Use the "initonly" keyword. Note that "constant int" won't compile, you
probably meant "const int". In general C++/CLI support for
const-correctness is very poor.
 
Use the "initonly" keyword. Note that "constant int" won't compile, you
probably meant "const int". In general C++/CLI support for
const-correctness is very poor.
Click to expand...

I ended up figuring that out for myself. The solution seems to work
fine for C++/CLI, but not for the .NET languages in general. I think
if you were to create a class like this and use it in C#, you would be
restricted from assigning the variable to a new array, but nothing
will stop you from modifying the values in the array itself. I
haven't actually tried this, but I have created an equivalent class in
C# and it does allow reassigning the array values. The only
difference here is that you can't specify the datatype as a "const
int" in C# because the const keyword conflicts with the readonly
keyword.

So I guess I need to come up with a better idea of how I want to
organize these constant values.
 
Back
Top