[masklinn]

> Grepping is ghetto, second-class. Whereas an IDE with built-in refactorings has a much higher guarantee of hitting the right artifacts, especially with shared substring collision.

Of course that only works when the tooling exists, which for instance it does not for Go but does for Python. Doesn't for Haskell but does for Ruby (Jetbrains has done a pretty good job there).

[cgag]

Well, you also don't have to rely on the IDE or grep since your incorrect code just won't compile.