Hacker News Reader

Defining a Go iterator is similar to defining a Python decorator that takes an argument. Both involve defining a function that returns another function, with the inner function having another function as its parameter.

This isn’t a particularly difficult concept, but manipulating functions in this way does feel unusual in such heavily-procedural languages. This has two downsides:

* Programmers who only use those languages are unfamiliar with the concept, and

* The languages’ syntaxes aren’t designed to make it particularly clear.

I think Python iterators are designed very cleanly.

They just take the function they decorate, and return another. It does not get simpler yet more flexible than this.

There isn't any new syntax here.

`range aFunction` is kinda of new syntax, though I agree it is more a new semantic thing.