How to detect if an array if dynamic or static

[sigod via Digitalmars-d-learn]

On Thursday, 25 February 2016 at 10:03:08 UTC, mahdi wrote:
> Thanks.
>
> So when we define the function, we MUST specify the array size 
> to be able to accept a static array?
> Can't we just define a function which can accept any static 
> array with any size? (e.g. a function to calculate average of a 
> static int array of any size)?

Static array can be accepted in place of dynamic:

	void foo()
	{
		int[3] arr = [1, 2, 3];
		
		bar(arr);
	}
	
	void bar(scope int[] arr)
	{
		import std.stdio : writeln;
		writeln(arr); // [1, 2, 3]
	}

But be careful not to escape such variables. Demonstration: 
http://dpaste.dzfl.pl/613e04d4fe3f