Method find_field

ruby/red-arrow/lib/arrow/struct-array.rb:43–52

@overload find_field(index) @param index [Integer] The index of the field to be found. @return [Arrow::Array, nil] The `index`-th field or `nil` for out of range. @overload find_field(name) @param index [String, Symbol] The name of the field to be found. @return [Arrow::Array, nil] The field that has `name` or `nil` for nonexistent name.

(index_or_name)

    #   @return [Arrow::Array, nil]
    #      The field that has `name` or `nil` for nonexistent name.
    def find_field(index_or_name)
      case index_or_name
      when String, Symbol
        name = index_or_name
        (@name_to_field ||= build_name_to_field)[name.to_s]
      else
        index = index_or_name
        fields[index]
      end
    end

    alias_method :fields_raw, :fields
    def fields