Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/rid/core_ext/hash.rb

Constant Summary collapse

DEFAULT_SEPERATOR = 
'/'

Instance Method Summary collapse

Instance Method Details

#at(path, seperator = DEFAULT_SEPERATOR) ⇒ Object 



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# File 'lib/rid/core_ext/hash.rb', line 23

def at(path, seperator = DEFAULT_SEPERATOR)
  current = self
  
  parts = path.split(DEFAULT_SEPERATOR)
  key = parts.pop

  return unless key

  parts.each do |part|
    current = current[part]
    
    return unless current.is_a?(self.class)
  end

  current[key]
end

#flatten(seperator = DEFAULT_SEPERATOR, prefix = nil) ⇒ Object 



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# File 'lib/rid/core_ext/hash.rb', line 4

def flatten(seperator = DEFAULT_SEPERATOR, prefix = nil)
  new_hash = {}

  each do |key, value|
    new_key = [prefix, key].compact.join(seperator)
    if value.is_a?(self.class)
      new_hash.update value.flatten(seperator, new_key)
    else
      new_hash.update new_key => value
    end
  end

  new_hash
end

#flatten!(*args) ⇒ Object 



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# File 'lib/rid/core_ext/hash.rb', line 19

def flatten!(*args)
  replace flatten(*args)
end

#update_at(path, value, seperator = DEFAULT_SEPERATOR) ⇒ Object 



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# File 'lib/rid/core_ext/hash.rb', line 40

def update_at(path, value, seperator = DEFAULT_SEPERATOR)
  current = self
  
  parts = path.split(DEFAULT_SEPERATOR)
  key = parts.pop

  return self unless key

  parts.each do |part|
    current[part] ||= {}
    current = current[part]
    
    raise 'updating value at %s failed!' % inspect unless current.is_a?(self.class)
  end

  current[key] = value
end