[chlorion]

You could very easily say the same thing about goto vs structured loops, for example:

  "I hate this. I don't know why people insist on forcing this programming style into every language. Goto and labels exist for a reason. They are simple, they work, and nine times out of ten, they are faster than this crap."

It's just a more structured way to express common operations that we use loops for, and it does has objective technological advantages over raw loops when implemented and used correctly.

As for performance, that is going to vary language to language, but in general iterator processing pipelines are not slower and can even be faster than raw loops. Whether this is the case in Go, I have no idea.

With all of that being said, I am not sure if I would use this style of programming in Go since it doesn't feel idiomatic (yet?).