Good notes posted by carlosbrando

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July 22, 2008
6 thanks


Allows for reverse merging where its the keys in the calling hash that wins over those in the other_hash. This is particularly useful for initializing an incoming option hash with default values:

def setup(options = {})
  options.reverse_merge! :size => 25, :velocity => 10

The default :size and :velocity is only set if the options passed in doesn‘t already have those keys set.