Number of input parameters of a function.

If you have a function's handle,

Is there any way to figure out how many input parameters it expects in the function's signature?

Even ugly hacky ways are fine.

-Milad

Answer 1

[Walter Roberson]

nargin(FunctionHandle)

[John D'Errico]

A good way to learn this would have worked is to use methods. For example:

H = @(x,y) x+y
H =
  function_handle with value:
    @(x,y)x+y
>> methods(H)

Methods for class function_handle:

display    func2str   functions  nargin     nargout