From: matz@...
Date: 2015-11-04T00:44:31+00:00
Subject: [ruby-core:71326] [Ruby trunk - Feature #11537] Introduce "Safe	navigation operator"

Issue #11537 has been updated by Yukihiro Matsumoto.


Thomas, that reminds me of old UUCP addresses (grin).
But ,as Nobu pointed out, it can be parsed as `u(!profile(!thumbnails(!large)))` unfortunately.

Matz.


----------------------------------------
Feature #11537: Introduce "Safe navigation operator"
https://bugs.ruby-lang.org/issues/11537#change-54701

* Author: Hiroshi SHIBATA
* Status: Closed
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
I sometimes write following code with rails application:

```ruby
u = User.find(id)
if u && u.profile && u.profile.thumbnails && u.profiles.thumbnails.large
  ...
```

or

```ruby
# Use ActiveSupport
if u.try!(:profile).try!(:thumbnails).try!(:large)
 ...
```
I hope to write shortly above code. Groovy has above operator named "Safe navigation operator" with "`?.`" syntax.
Ruby can't use "`?.`" operator.

Can we use "`.?`" syntax. like this:

```ruby
u = User.find(id)
u.?profile.?thumbnails.?large
```

Matz. How do you think about this?




-- 
https://bugs.ruby-lang.org/