If you use vim, the syntastic[1] plugin has go support and gives you this sort of feedback directly in the editor (for any go code, not just app-engine -- and m

If you use vim, the syntastic[1] plugin has go support and gives you this sort of feedback directly in the editor (for any go code, not just app-engine -- and many other languages) every time you save. [1] https://github.com/scrooloose/syntastic https://github.com/scrooloose/syntastic