# MATLAB: How i can have dimension input of a defined function like f

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i have a code that input of its a handle function like f, in duration of this code i need to number of input this function for example f is: f=@(x,y)(x+y)

• f=@(x,y)(x+y)s=func2str(f);a=regexp(s,'(?<=@$$)[\w,]+(?=$$)','match')out=numel(cell2mat(regexp(a,'\w+')))