From: "rogerdpack (Roger Pack)" <rogerpack2005@...>
Date: 2012-07-14T15:04:23+09:00
Subject: [ruby-core:46415] [ruby-trunk - Feature #1122] request for: Object#try


Issue #1122 has been updated by rogerdpack (Roger Pack).

File try.txt added

Attaching presentation, contents:

Feature #1122 [request for Object#try (guarded method invocation)]

Today:

>>  if entry.at('description') && entry.at('description').inner_text

or:

>> if (description = entry.at('description') && description.inner_text  

Proposal: Object#&& method:

  if entry.at('description').&&.inner_text

or alternate Proposal Object#andand or Object#present? or some other name:

  if entry.at('description').present?.inner_text
  
Pros: easier to read, no variable allocation.  Unknown cons.
----------------------------------------
Feature #1122: request for: Object#try
https://bugs.ruby-lang.org/issues/1122#change-28036

Author: authorNari (Narihiro Nakamura)
Status: Rejected
Priority: Normal
Assignee: authorNari (Narihiro Nakamura)
Category: core
Target version: 2.0.0


=begin
 Hi.
 
 Object#try is new feature of rails2.3.
 
 http://guides.rubyonrails.org/2_3_release_notes.html
 http://github.com/rails/rails/blob/master/activesupport/lib/active_support/core_ext/try.rb
 http://ozmm.org/posts/try.html
 
 Matz said: "OK, good name is the last problem."
 
 Anyone has better name?
 
 thanks.
 
 ---
 Narihiro Nakamura
=end



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