Julia for prototyping, compared to MATLAB?

Not that difficult to workaround

function  varargout = mylib(fun_name,varargin)
	if (nargout)
		[varargout{1:nargout}] = feval(fun_name, varargin{:});
	else
		feval(fun_name, varargin{:});
	end

function fun1
function fun2
...

and call it like

out = mylib('fun1', args);