3 ms·

> Labeled break and continue ... I find that normally if I need nested break then it suffices to refactor the target loop into a function and use return instea

• fsckboy 4y ago
  > You'd just pull out the target loop body rather than the whole loop. that's a "good solution" in the sense of "lambda is the ultimate goto", but if you're writing a loop over the rows and columns (or more dimensions) of something, pulling out and segregating the control structure for the innermost (and potentially other) layers of the hierarchy can make a simple depth first exploration look obscure. If the total amount of code is fitting in a screenful, I'd rather put multi-level break or continue labels and then goto them sparingly.
  • quietbritishjim 4y ago
    That sounds like a case where some sort of iterator class would be best (or, in C, an iterator "class" made of a struct with associated functions). It could have helper methods for .next_column() etc., and you'd just have one overall loop. That might make the code more complicated, overall, but that's the trade off of structured programming - occasionally there's more complexity but it's so exceptionally rare that it's still worth it overall. (Then again ... perhaps it would make the code arguably simpler anyway.)