size
function returns the size of the argument. If the
argument is a string or scalar, then the result is a two element
row vector, with both elements set to 1. If the argument is a
matrix, then the result is a two element row vector, with the first
element equal to the number of rows in the argument, and the second
argument equal to the number of columns. If the argument is a list,
size
returns the number of elements in the list.