From: mame@...
Date: 2015-10-27T12:01:27+00:00
Subject: [ruby-core:71216] [Ruby trunk - Feature #11537] Introduce "Safe	navigation operator"

Issue #11537 has been updated by Yusuke Endoh.


Rodrigo Rosenfeld Rosas wrote:
> ~~~
> u ?.profile ?.thumbnails ?.large || default
> ~~~

Consider a method `+`.

`str.?+"foo"` causes no conflict, but `str ?.+"foo"` will be parsed as `str(?. + "foo")`.

-- 
Yusuke Endoh <mame@ruby-lang.org>

----------------------------------------
Feature #11537: Introduce "Safe navigation operator"
https://bugs.ruby-lang.org/issues/11537#change-54596

* 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/