array_count

[Appsurdgames]

Counts the frequency of a certain item occuring in the array.
It may be extended to allow the item to be an array, such that it returns an array of counts.

Here is a possible implementation of the simple version with a single item:

/// @function array_count(array, elt)
/// @param {array}	array	Input array
/// @param {any}	elt		The element to count
/// @return frequency

function array_count(_array, _elt)
{
	if is_array(_array)
	{
		var count = 0;
		for(var i = 0; i<array_length(_array); i++)
		{
			if is_array(_array[i])
			{
				count += array_count(_array[i], _elt);
			}
			else if (_array[i] == _elt)
			{
				count += 1;
			}
		}
		return count;
	}
	else
	{
		return 0;
	}
}