← Back to context

Comment by scotty79

3 months ago

When we are on subject of loops... I'd love to have 'else' block for loops that runs when the loop had zero iterations.

2 comments

scotty79

Reply
fuzztester  3 months ago

Not the same thing (although I thought it was), according to the Python docs, but related:

https://docs.python.org/3/reference/compound_stmts.html

See sections 8.3, the for statement, and 8.2, the while statement.

  • scotty79  3 months ago

    Yeah, `while...else` in Python does the wrong thing. Executes `else` block when the loop finished normally (not through `break`).

    Scala for example has a `breakable {}` block that lets you indicate where you should land after a `break`

        breakable {
      while condition {
        // loop body
        if otherCondition then break;
        // rest of the body
      }
      // body of pythonic else block
    } // you land here if you break

    However I have no idea how to implement the kind of `else` I described in any language without checking the condition twice.