[mseepgood]

If you understood how to write Go, you would write an imperative ad-hoc loop instead of composing generic functional combinators. But you have to be mature enough to jump over the shadow of your functional pride and write clean imperative code.

[microtonal]

Of course you can write a 'for' loop. You can also write a goto in C. I was replying to my parent who said 'you don't need generics, since Go has interfaces'. I wanted to point out that interfaces are not a general substitute for generics.

But you have to be mature enough to jump over the shadow of your functional pride and write clean imperative code.

By that reasoning we can go back to assembly ;): you just have to be mature enough to jump over the shadow of your portability pride and write clean assembly code.

Abstractions exist to help us and in that respect Go feels like a throwback to the past. It's pretty much a Java 1.0 that compiles to machine code.

[jacques_chester]

Loops impose order. Maps do not.

Maps are in principle trivial to parallelise. That would be a nice feature.

[sixbrx]

Agree, and a map also provides an "at a glance" assurance that I'm getting a transformed array of the same size. For loops take longer to discern what they're doing just because they could be doing almost anything, including early exit.