From: Verno Miller <verno@...>
Date: 2006-09-27T18:19:14+09:00
Subject: Re: Accessing Nested Hashes Directly

> Posted by Adam Traver 
> on 26.09.2006 19:57 

> I've been having a problem for a while with Ruby where accessing a hash
> within a hash will fail if the first hash is nil. 
> 
> ...
>
> You will receive a hash that looks like this (within the params hash):
>
>  "body" => { "user" => { "name" => { "given" => "Tony", "family" => "Robbins" } } }
>
>Thus, you can access the elements like this:
>
>  params["body"]["user"]["name"]["given"]
>
> ...
>
> Here's my question, though: is this code efficient? Is there a better
> way? Am I missing something fundamental in Ruby that would solve this
> without the need for the new method?

Yet another (though indirect) approach could be to first extract all 
keys from the nested hash!

http://bigbold.com/snippets/posts/show/1908





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