How to catch 'not enough input arguments' error?

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Jaya
Jaya 2021-9-8
评论： Jaya 2021-9-9
Is there any way I can catch the error 'Not enough input arguments'? For e.g. the below line in a function of my big code throws this error.
spn=spans(index) %spans is an array of 9 elements and 'index' itself is something I extract from an array
Problem: As this line is inside a function, the code stops upon getting error and I can't access the function workspace to see what was causing this. And since this error does not appear every time but mostly after a long time the code runs, it is not feasible for me to put breakpoint here and check every time by pressing continue
So is there any piece of code I can write here and put a breakpoint so that when this error comes it it pauses there for me to see the value of index or the corresponding function parameters?

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Chunru
Chunru 2021-9-9
编辑：Chunru 2021-9-9
Use try-catch:
try
spn=spans(index)
catch
whos index % show the inforamtion of the variable index
disp(index)
end
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Chunru
Chunru 2021-9-9
It should be "whos index" to show the variable information when an error is catched.

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