Finding the source code of the building function

i want to look at the code of the building funciton. for example funciton isempty(A), see all the code behide it.

Answer 1

[DGM]

Some functions are implemented as m-code and can simply be opened

open bwmorph

and some rely on internal and private functions which are themselves even in m-code

MLROOT/toolbox/images/images/+images/+internal/algbwmorph.m

But there are plenty of things which aren't.

open isempty

If you want to work with the code behind those functions, you might get to do so once you start your job at MathWorks.

https://www.mathworks.com/matlabcentral/answers/98627-how-do-i-access-the-source-code-for-built-in-functions-in-matlab

This is a question that's been asked many times.