[desumeku]

> Correctness and maintainability trumps performance

Great, please make all the software even slower than it already is. I am overjoyed to have to purchase several new laptops a decade because they become e-waste purely due to the degradation of software performance. It is beyond ridiculous that to FP programmers daring to mutate variables or fine-tune a for loop is an exceptional scenario that you don't do "unless you have to" and which requires "knowing what you're doing". Do you know what you're doing? How can you be a software engineer and think that for loops are too difficult of a construct, and that you need something higher-level and more abstract to feel safe? It's insane. Utterly insane. Perhaps even the root of all evil, Code Golf manifested as religion.

[stouset]

> Great, please make all the software even slower than it already is.

It is more or less trivial to emit essentially optimal autovectorized and inlined machine code from functional iterators.

Rust does this, for example.