Programmatically return a list of all functions

Question

I want to programmatically get a list of available functions in the current MATLAB namespace, as well the available functions in a package. How can this be done?

Answer 1

We can use package metadata for this:

pkgs = meta.package.getAllPackages();
% Or if the specific package name is known:
mp = meta.package.fromName('matlab')

The cell array returned in the 1^st case, pkgs, contains objects such as this:

  package with properties:

                   Name: 'Sldv'
            Description: ''
    DetailedDescription: ''
              ClassList: [29×1 meta.class]
           FunctionList: [8×1 meta.method]
            PackageList: [9×1 meta.package]
      ContainingPackage: [0×0 meta.package]

So all that's left to do is iterate through the packages and sub-packages tand collect their FunctionList entries.

I'm not sure how to get the functions that belong to the "default" namespace, other than by parsing the function list doc page, for example using the Python API and BeautifulSoup:

fl = arrayfun(@(x)string(x{1}.string.char), py.bs4.BeautifulSoup( ...
       fileread(fullfile(docroot,'matlab','functionlist-alpha.html')), ...
       'html.parser').find_all("code")).';