Unrecognized function or variable 'mustBeA'.

Not all built in functions are loaded in Matlab. If I check 'mustBe .. ' functions (data type validation) , all the numeric ones are loaded but string and other data types are not. How do I install 'mustBeA' function? I am using Matlab version 2020a

(Unrelated note : when I start Matlab from terminal- I get the warning ' Failed to load module "overlay-scrollbar" Failed to load module "canberra-gtk-module" ' . Could this be the reason? I haven't had issues without the 2 modules so far, therefore I have ignored it.)

[Walter Roberson]

You can fix the unrelated reports with the information at https://www.mathworks.com/matlabcentral/answers/472134-gtk-message-10-32-31-466-failed-to-load-module-canberra-gtk-module#comment_1533888

[Nidhi Anilkumar]

Thank you. I have rephrased the question solely for mustBeA function missing in the Matlab installation.

Answer 1

[Jan]

The function mustBeA was introduced in Matlab R2020b. You are using 2020a. In consequence upgrading the the way to go or write a replacement function by your own.