From: "ioquatix (Samuel Williams)" <noreply@ruby-lang.org>
To: ruby-core@ruby-lang.org
Subject: [ruby-core:104960] [Ruby master Feature#18083] Capture error in ensure block.
Date: Wed, 18 Aug 2021 03:03:43 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-18083.20210818030342.3344@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-18083.20210818030342.3344@ruby-lang.org
Issue #18083 has been reported by ioquatix (Samuel Williams).
----------------------------------------
Feature #18083: Capture error in ensure block.
https://bugs.ruby-lang.org/issues/18083
* Author: ioquatix (Samuel Williams)
* Status: Open
* Priority: Normal
----------------------------------------
As discussed in https://bugs.ruby-lang.org/issues/15567 there are some tricky edge cases.
As a general model, something like the following would be incredibly useful:
``` ruby
begin
...
ensure => error
pp "error occurred" if error
end
```
Currently you can get similar behaviour like this:
``` ruby
begin
...
rescue Exception => error
raise
ensure
pp "error occurred" if error
end
```
The limitation of this approach is it only works if you don't need any other `rescue` clause. Otherwise, it may not work as expected or require extra care. Also, Rubocop will complain about it.
Using `$!` can be buggy if you call some method from `rescue` or `ensure` clause, since it would be set already. It was discussed extensively in https://bugs.ruby-lang.org/issues/15567 if you want more details.
--
https://bugs.ruby-lang.org/
next parent reply other threads:[~2021-08-18 3:03 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 3:03 ioquatix (Samuel Williams) [this message]
2021-08-18 3:09 ` [ruby-core:104962] [Ruby master Feature#18083] Capture error in ensure block ioquatix (Samuel Williams)
2021-08-18 17:04 ` [ruby-core:104971] " Eregon (Benoit Daloze)
2021-08-18 17:09 ` [ruby-core:104972] " Eregon (Benoit Daloze)
2021-08-18 23:04 ` [ruby-core:104980] " ioquatix (Samuel Williams)
2021-08-19 0:45 ` [ruby-core:104981] " duerst
2021-08-19 0:51 ` [ruby-core:104982] " ioquatix (Samuel Williams)
2021-08-19 1:00 ` [ruby-core:104984] " ioquatix (Samuel Williams)
2021-08-19 8:04 ` [ruby-core:105001] " ioquatix (Samuel Williams)
2021-08-19 8:19 ` [ruby-core:105002] " matz (Yukihiro Matsumoto)
2021-08-19 9:57 ` [ruby-core:105005] " ioquatix (Samuel Williams)
2021-08-19 16:42 ` [ruby-core:105013] " Eregon (Benoit Daloze)
2021-08-20 1:09 ` [ruby-core:105019] " ioquatix (Samuel Williams)
2021-08-20 22:00 ` [ruby-core:105033] " Eregon (Benoit Daloze)
2021-08-20 22:03 ` [ruby-core:105034] " ioquatix (Samuel Williams)
2021-08-20 22:09 ` [ruby-core:105035] " Eregon (Benoit Daloze)
2021-08-21 0:52 ` [ruby-core:105036] " ioquatix (Samuel Williams)
2021-10-19 4:46 ` [ruby-core:105667] " ko1 (Koichi Sasada)
2021-10-19 17:51 ` [ruby-core:105682] " Eregon (Benoit Daloze)
2021-10-21 6:13 ` [ruby-core:105715] " ko1 (Koichi Sasada)
2021-10-21 6:28 ` [ruby-core:105716] " matz (Yukihiro Matsumoto)
2021-10-21 10:24 ` [ruby-core:105727] " Eregon (Benoit Daloze)
2021-10-21 11:15 ` [ruby-core:105728] " ioquatix (Samuel Williams)
2021-10-21 11:17 ` [ruby-core:105729] " ioquatix (Samuel Williams)
2021-10-21 13:00 ` [ruby-core:105733] " nobu (Nobuyoshi Nakada)
2023-12-14 19:40 ` [ruby-core:115747] " ioquatix (Samuel Williams) via ruby-core
2023-12-14 20:08 ` [ruby-core:115748] " kddnewton (Kevin Newton) via ruby-core
2023-12-15 14:46 ` [ruby-core:115752] " Dan0042 (Daniel DeLorme) via ruby-core
2023-12-15 20:15 ` [ruby-core:115755] " ioquatix (Samuel Williams) via ruby-core
2023-12-15 20:20 ` [ruby-core:115756] " jeremyevans0 (Jeremy Evans) via ruby-core
2023-12-15 20:30 ` [ruby-core:115757] " ioquatix (Samuel Williams) via ruby-core
2023-12-15 21:41 ` [ruby-core:115759] " Dan0042 (Daniel DeLorme) via ruby-core
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