From: Rodrigo Rosenfeld Rosas <rr.rosas@...>
Date: 2011-01-20T09:27:44+09:00
Subject: [ruby-core:34632] Ruby operator equivalent to Groovy's "?."

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  One of the few things I like in Groovy that Ruby doesn't support is 
the '?.' operator. For instance:

obj?.somePropertyName?.anotherGreatPropertyName?.anotherOne

This is the same as:

(obj == null ? null : (obj.somePropertyName == null ? null : 
(obt.somePropertyName.anotherGreatPropertyName == null ? null : 
obt.somePropertyName.anotherGreatPropertyName.anotherOne)))

Unfortunately, this name cannot be used by Ruby since it accepts '?' as 
part of a method name. I've seen some framework that declares a '_?' 
method for doing this like 'obj._?.some_method._?.another_method'.

I'm not sure what syntax would fit better for Ruby. I don't even know if 
this is something the Ruby community is interested in as well, so I'd 
like to hear your opinions on this feature.

Regards, Rodrigo.

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    <font face="DejaVu Sans">One of the few things I like in Groovy that
      Ruby doesn't support is the '?.' operator. For instance:<br>
      <br>
      obj?.somePropertyName?.anotherGreatPropertyName?.anotherOne<br>
      <br>
      This is the same as:<br>
      <br>
      (obj == null ? null : (obj.somePropertyName == null ? null :
      (obt.somePropertyName.anotherGreatPropertyName == null ? null : </font><font
      face="DejaVu Sans">obt.somePropertyName.anotherGreatPropertyName.anotherOne</font><font
      face="DejaVu Sans">)))<br>
      <br>
      Unfortunately, this name cannot be used by Ruby since it accepts
      '?' as part of a method name. I've seen some framework that
      declares a '_?' method for doing this like
      'obj._?.some_method._?.another_method'.<br>
      <br>
      I'm not sure what syntax would fit better for Ruby. I don't even
      know if this is something the Ruby community is interested in as
      well, so I'd like to hear your opinions on this feature.<br>
      <br>
      Regards, Rodrigo.<br>
    </font>
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