Method: Array#to_assoc_hash

Defined in:
lib/jinx/helpers/array.rb

#to_assoc_hash ⇒ Hash

Returns a new Hash generated from this array of arrays by associating the first element of each member to the remaining elements. If there are only two elements in the member, then the first element is associated with the second element. If there is less than two elements in the member, the first element is associated with nil. An empty array is ignored.

Examples:

[[:a, 1], [:b, 2, 3], [:c], []].to_assoc_hash #=> { :a => 1, :b => [2,3], :c => nil }

Returns:

  • the first => rest hash



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# File 'lib/jinx/helpers/array.rb', line 64

def to_assoc_hash
  hash = {}
  each do |item|
    raise ArgumentError.new("Array member must be an array: #{item.pp_s(:single_line)}") unless Array === item
    key = item.first
    if item.size < 2 then
      value = nil
    elsif item.size == 2 then
      value = item[1]
    else
      value = item[1..-1]
    end
    hash[key] = value unless key.nil?
  end
  hash
end