Can a MATLAB function edit the input?

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Lorcan O'Connor 2021-8-19

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https://ww2.mathworks.cn/matlabcentral/answers/1436954-can-a-matlab-function-edit-the-input

评论： Steve Eddins 2021-8-19

In Python, I could define, say, a linked list via the class 'node' with attribute 'next', then define a recursive function

def addtoend(root, newnode): 
    if root.next == None: 
        root.next = newnode
    else: addtoend(root.next,newnode) 

I can't figure out how do implement this in MATLAB - I can define the class 'node' but MATLAB doesn't seem to allow functions to modify the input and keep it in the workspace. Is there any way around this?

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Answer 1

Steve Eddins 2021-8-19

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You'll need your class to subclass handle. See the documentation page "Implementing Linked Lists with Classes" for details.

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Lorcan O'Connor 2021-8-19

Thanks - in this respect isn't MATLAB much more awkward than other oop languages?

Steve Eddins 2021-8-19

There are many benefits to the normal MATLAB function-calling behavior in which functions do not modify their inputs. I'll leave it up to you to assess the balance of pros and cons for your own work. :-)

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