From: Robb Shecter <robb.shecter@...>
Date: 2008-05-28T04:08:32+09:00
Subject: Can someone explain this syntax in new?

I found this in an old post:


"Here's a Hash that automatically creates new hashes for each key you
try to access (specifically 1-level deep for a '2-dimensional' hash):

  people = Hash.new{ |me,key| me[ key ] = {} }
  people[ :gavin ][ :age ] = 34
  people[ :gavin ][ :sex ] = :male
  people[ :fido ][ :species ] = :dog
  p people
  #=> {:gavin=>{:age=>34, :sex=>:male}, :fido=>{:species=>:dog}}



...but there was no further explanation.  Could somebody explain the
syntax in the first line?  Is this overwriting new()?

Thanks,
Robb
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