clear

A = [1 2 3];
b = true;

% print the list of variables in the workspace
who
% if saved to a variable, saves the variables as a nx1 cell
vars = who;

% prints all variables along with class, size, byes, attributes
whos

% prints info for a single var
whos A
% identify the type of a variable
class(A)
class(b)
c = int32(3); % class doesn't work with literals :(
class(c)

% test for data type
isinteger(c)
isnumeric(A), isnumeric(c)
ismatrix(c)
isa(A, 'numeric')

% find the file where a user or built-in function is defined
which eye;