From: Harry Kakueki <list.push@...>
Date: 2007-05-14T21:59:03+09:00
Subject: Hash#shift

Hi,

I was reading this http://www.rubycentral.com/book/ref_c_hash.html#Hash.shift

and I wondered how this could be useful. I must be missing something.

I tried this

ahash = {"a" => "apple","b"=> "boat","c" =>"car", "dog" => "zebra",
"elephant" => "yak"}
p ahash #=>{"a" => "apple","b"=> "boat","c" =>"car","elephant" =>
"yak", "dog" => "zebra"}
p ahash.shift #=>["a", "apple"]
p ahash.shift #=>["b", "boat"]
p ahash.shift #=>["c", "car"]
p ahash.shift #=>["elephant", "yak"]
p ahash.shift #=>["dog", "zebra"]

Since the order of a hash is not guaranteed, you do not know what you
are shifting at any given time. Is this right?
If you just wanted to shift everything you could use Hash#each.

What am I missing?

Harry

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