Чел, шикарная ката.

Python translation

added instructions in the initial code + explicit check of the returned address

The reason is to make API more flexible by enabling chaining in a way similar to strcpy, strcat, and such.

It would be much more intuitive to make the return void. There is no reason to return the same pointer that is provided.

I'm soooooo happy that I managed to do it this way too .
hahahaha

you could just do what i did too, although this solution is def more clever

Not clearly defined how "lines" should be counted if there is/is not a final newline in the file.

I was tryna figure out how imma one line it, I couldn't, GREAT STUFF!

I love how easy Python makes it for you to just do things like this.

The only oneliners that make you feel dumb!

That's a clean solution to be honest

I think it depends on the language you use, some languages have dedicated methods to flatten nested arrays, and some don't, and you'll have to figure the logic out.

Well I call it Best Practices.