If s and t are strings and you want to know whether s starts with the string t, you can execute s. starts With (t). As mentioned in the text, you can also use region Matches( ) instead of starts With(...

If s and t are strings and you want to know whether s starts with the string t, you can execute s. starts With (t). As mentioned in the text, you can also use region Matches( ) instead of starts With( ). Give an expression using region Matches( ) that is equivalent to s. starts With(t).