That's why we have snippets and code generators for those. And even in the absence of that, I usually copy code from some other place and gut it out to make place for the new logic. This can be done in 30 seconds or less if the code is organized.

> IIRC there are no languages where I can just open an empty file and write "put: <business logic>" and it magically knows how to handle everything correctly.

Are you sure it's done correctly? Take something like timestamps, or validations: It's easy to get those wrongs.