Trivial, solved ages ago [LWN.net]

Trivial, solved ages ago

Posted Jul 7, 2013 15:53 UTC (Sun) by HelloWorld (guest, #56129)
In reply to: Or even old loop constucts by mcmechanjw
Parent article: Philosophy and "for" loops — more from Go and Rust

We still have the loop and a half problem Knuth pointed out even in this article's examples...

No we don't, that problem was solved ages ago. In well-designed languages it's a non-issue because there's no pointless distinction between statements and expressions. Others, like GNU C, have features to cope with this kind of usage. In GNU C, your example

while(1) {
  statements
  if condition break;
  statements
}

can be rewritten as

while ({ statements; !condition; }) {
  statements
}

So, of course some people who choose to use outdated languages still have to worry about such paltry problems, but that certainly doesn't justify calling this an unsolved problem.