The 'foundation' as you use it changes greatly depending on what you use programs to do. If you are working on a user interface over a very simple problem, then design principles and maintanable code are critical.
If you are working on data analysis, than Big-O type basics become more important.
The point of having 'foundations', is that when you go to do almost a type of problem that you normally do not, such as CPU intensive data crunching, you know where to look for the information.
Comments
The 'foundation' as you use it changes greatly depending on what you use programs to do. If you are working on a user interface over a very simple problem, then design principles and maintanable code are critical.
If you are working on data analysis, than Big-O type basics become more important.
The point of having 'foundations', is that when you go to do almost a type of problem that you normally do not, such as CPU intensive data crunching, you know where to look for the information.