Yup - there is a mistake... in the Context class instead of "return strategy.execute(a, b)" should be "return strategy.algorithm(a, b)", because Strategy class doesn't have "execute" method

Where are the interactive lessons?

Button `Catalog` redirects to refactoring object.

Paypal

I cannot view previous lessons again

Congratulations

The Course is Great, however if there are more practice and real code? it should be perfect!

Comments on pseudocode in english

Fantastic course, covered with code example is bonus.

Not bad not bad.