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bool ICollection<T>.Remove(T item)
{
        // short circuit for easy case at the front
	if (Equals(_array[_head],item))
	{
		Dequeue();
		return true;
	}
	else // first find it
	{
		for(var i = 0;i<_count;++i)
		{
			var idx = (_head + i) % _array.Length;
			if(Equals(_array[idx],item))
			{
                                // this gives me a headache in my eye
				if (_head + _count < _array.Length)
				{
					Array.Copy(_array, idx + 1, _array, idx, _count - idx - 1);
				}
				else if (idx == _array.Length - 1)
				{
					_array[idx] = _array[0];
					if(_count+_head!=_array.Length)
					{
						Array.Copy(_array, 1, _array, 0, (_count + _head) % _array.Length - 1);
					}
				}
				else if (idx < _head)
				{
					Array.Copy(_array, idx + 1, _array, idx, (_count + _head) % _array.Length - 1);
				}
				--_count; 
				unchecked
				{
					++_version;
				}
				return true;
			}
		}
	}
	return false;
}