Try blocks are trying
feepingcreature at gmail.com
Tue Oct 12 07:23:41 UTC 2021
On Monday, 11 October 2021 at 16:23:30 UTC, Paul Backus wrote:
> On Monday, 11 October 2021 at 16:04:00 UTC, FeepingCreature
>> Sure, but then you can't get at the `V` without - going into a
>> subscope again. :) Though I guess it wouldn't be covered by a
> At some point, you need to have separate code paths for the
> error case and the success case, yes. I know of no language
> construct in D that allows you to create separate code paths
> without introducing a scope somewhere. The best you can do is
> move the scopes around.
Right, hence `export try`.
> In D, you can also write `auto x = frgl();`, and it will
> propagate the exception automatically. :)
> This is not a replacement for `try` blocks, because the reason
> you use a `try` block is to handle an exception locally; in
> other words, to avoid propagating it.
Right, sorry. I've been meaning to add a feature for that:
`frgl().handle(Exception ex: return false;)`, but it isn't in yet.
More information about the Digitalmars-d