auto foo = [1:1];

Getting the following errors for the above statement:

Error: cannot infer type from this array initializer
Error: array initializers as expressions are not allowed
Error: cannot use array to initialize int
Error: array initializers as expressions are not allowed
variable foo is not a static and cannot have static initializer

A nice workaround would be:

auto foo = ([1:1]); // Works only in function bodies. Otherwise getting:  Error: non-constant expression [1:1]