Number of input parameters of a function.

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Milad Omidi 2019-4-5

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/454743-number-of-input-parameters-of-a-function

评论： John D'Errico 2019-4-5

采纳的回答： Walter Roberson

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

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采纳的回答

Walter Roberson 2019-4-5

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https://ww2.mathworks.cn/matlabcentral/answers/454743-number-of-input-parameters-of-a-function#answer_369294

在 MATLAB Online 中打开

nargin(FunctionHandle)

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John D'Errico 2019-4-5

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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    

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