On 9/29/16 7:02 AM, pineapple wrote:
On Thursday, 29 September 2016 at 10:51:01 UTC, Nick Treleaven wrote:
Note that finally(bool) is more flexible than finally/else as you can
interleave code arbitrarily. __guard makes it clearer something
special is happening rather than just implicitly extending `try` scope
in the `else` clause. Also, 'else' is not clear enough IMO.
While I think finally(bool) is a decent approach, the languages that
currently integrate this concept into their error handling - Python and
Ruby to my knowledge - all use `else`. Clarity is not a good argument,
because those who are already proficient in languages other than D will
expect the syntax to be consistent with other languages. It would be
like some language using foolishly using `elsif instead of `else if`.
(Dammit, Perl.)
In fact, finally(bool) can be extended to:
enum ExceptionStatus
{
success = 0,
caughtException = 1,
uncaughtException = 2
}
finally(ExceptionStatus)
Which has also been requested in the past.
-Steve
