Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/useful_class_extensions.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.zip(keys, values, default = nil, &block) ⇒ Object 



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# File 'lib/useful_class_extensions.rb', line 241

def self.zip(keys, values, default=nil, &block)
  hsh = block_given? ? Hash.new(&block) : Hash.new(default)
  keys.zip(values) { |k,v| hsh[k]=v }
  hsh
end

Instance Method Details

#flat_each(prefix = [], &blk) ⇒ Object 



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# File 'lib/useful_class_extensions.rb', line 215

def flat_each(prefix=[], &blk)
  each do |k,v|
    if v.is_a?(Hash)
      v.flat_each(prefix+[k], &blk)
    else
      yield prefix+[k], v
    end
  end
end

#flatify ⇒ Object 



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# File 'lib/useful_class_extensions.rb', line 225

def flatify
  hh = {}
  self.to_enum(:flat_each).collect { |k,v| [k.join("-"),v] }.collect {|attrib| hh[attrib[0]] = attrib[1]}
  return hh
end

#highest ⇒ Object 



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# File 'lib/useful_class_extensions.rb', line 231

def highest
  high_pair = self.max {|a,b| a[1] <=> b[1]}
  return {high_pair[0] => high_pair[1]}
end

#lowest ⇒ Object 



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# File 'lib/useful_class_extensions.rb', line 236

def lowest
  low_pair = self.min {|a,b| a[1] <=> b[1]}
  return {low_pair[0] => low_pair[1]}
end