How to loop through all the input of a function

QY
2019 2 14
1 个回答
更新时间：2021 4 27
6 次查看（30 天）

0 个投票

I have a simulink matlab function which has many inputs.
output = fcn(input1, input2, ... inputx )
Is there a way to iterate through every input on by one inside the function?
I know if the function take input as varargin I can use varargin{i} to loop through. But what if the input to the function is fixed?

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Matt J
Matt J 2019-2-14
编辑：Matt J 2019-2-14
Normally, if the inputs are something you would want to loop over, they shouldn't even be separate arguments in the first place. They should be combined into an array, and passed as a single argument.
Adam Danz
Adam Danz 2019-2-14
This sounds like a potential can of worms.
Here are two alternatives.
  1. "Varargin" is a viable solution (as you mentioned).
  2. Reducing the function to 1 input and using a cell array to pass multiple variables through the single input
Umair Ali Shah
Umair Ali Shah 2021-4-27
I have same issue function cannot evaluate array and manual input is not a solution.
Jonas
Jonas 2021-4-27
aaand we could use the who() function at the start of the function together with the eval() function to work on the variables. but i would not suggest that

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回答（1 个）

Adam Danz
Adam Danz 2021-4-27
编辑：Adam Danz 2021-4-27

0 个投票

As mentioned in the comments by Matt J and myself under this question, the only two recommended solutions to looping over input variables is
  1. pack your inputs into a single array variable
  2. use varargin which automatically packs all inputs into a cell array.
Then you can loop over all elements of the array.

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QY
QY
2019-2-14

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Adam Danz
Adam Danz
2021-4-27

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