inputParser does not throw error

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Grzegorz Lippe
Grzegorz Lippe on 17 Mar 2022
Answered: Matt J on 17 Mar 2022
I want to check, whether an input is a string. Why does it not work?
p = inputParser() ;
isString = @(x) (isvector(x) | isempty(x)) & ischar(x) ;
addParameter(p, 'property_name', isString) ;
isString(13) % yields False
parse(p, 'property_name', 13) % Throws no error

Accepted Answer

Matt J
Matt J on 17 Mar 2022
The validation function should be the 4th argument,
addParameter(p, 'property_name','', isString) ;

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