Class: Namo

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/namo.rb,
lib/Namo/VERSION.rb

Overview

Namo/VERSION.rb Namo::VERSION

Defined Under Namespace

Classes: Row

Constant Summary collapse

VERSION = 
'0.2.0'

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/namo.rb', line 39

def data
  @data
end

#formulae ⇒ Object

Returns the value of attribute formulae.



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# File 'lib/namo.rb', line 40

def formulae
  @formulae
end

Instance Method Details

#[](*names, **selections) ⇒ Object 



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# File 'lib/namo.rb', line 54

def [](*names, **selections)
  rows = selections.any? ? select{|row| row.match?(selections)} : entries
  data = (
    if names.any?
      rows.map do |row|
        names.each_with_object({}){|name, hash| hash[name] = row[name]}
      end
    else
      rows.map(&:to_h)
    end
  )
  self.class.new(data, formulae: @formulae.dup)
end

#[]=(name, proc) ⇒ Object 



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# File 'lib/namo.rb', line 68

def []=(name, proc)
  @formulae[name] = proc
end

#coordinates ⇒ Object 



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# File 'lib/namo.rb', line 46

def coordinates
  @coordinates ||= (
    dimensions.each_with_object({}) do |dimension, hash|
      hash[dimension] = @data.map{|row| row[dimension]}.uniq
    end
  )
end

#dimensions ⇒ Object 



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# File 'lib/namo.rb', line 42

def dimensions
  @dimensions ||= @data.first.keys
end

#each(&block) ⇒ Object 



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# File 'lib/namo.rb', line 72

def each(&block)
  return enum_for(:each) unless block_given?
  @data.each{|row_data| block.call(Row.new(row_data, @formulae))}
end

#to_a ⇒ Object 



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# File 'lib/namo.rb', line 77

def to_a
  @data.map do |row|
    row.keys.each_with_object({}) do |key, hash|
      hash[key] = row[key]
    end
  end
end