From a usability point of view, returning a string to indicate nothing found is probably the worst. an empty value or 0 would be much better.
Guillaume, I would say that that depends upon the intended 'audience' for the output.
Right and wrong
Given a window, how many subsets of a vector sum positive
frame of the matrix
03 - Matrix Variables 6
Sum of odd numbers in a matrix
Matlab Basics II - Intervals
Matlab Basics - Assigning Variables
Matlab Basics II - Count rows in a matrix
Matlab Basics II - Create a vector with a repeated entry
Matlab Basics - Switching Assignments
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