Question

I have several constants that I use, and my plan was to put them in a const array of doubles, however the compiler won’t let me.

I have tried declaring it this way:

const double[] arr = {1, 2, 3, 4, 5, 6, 73, 8, 9 };

Then I settled on declaring it as static readonly:

static readonly double[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9};

However the question remains. Why won’t compiler let me declare an array of const values? Or will it, and I just don’t know how?

Answer 1

From MSDN (http://msdn.microsoft.com/en-us/library/ms228606.aspx)

A constant-expression is an expression
that can be fully evaluated at
compile-time. Because the only way to
create a non-null value of a
reference-type [an array] is to apply the new
operator, and because the new operator
is not permitted in a
constant-expression, the only possible
value for constants of reference-types
other than string is null.