Module: Arrow::RecordContainable

Included in:
RecordBatch, Table
Defined in:
lib/arrow/record-containable.rb

Instance Method Summary collapse

Instance Method Details

#each_column(&block) ⇒ Object 



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# File 'lib/arrow/record-containable.rb', line 20

def each_column(&block)
  return to_enum(__method__) unless block_given?

  columns.each(&block)
end

#each_record(reuse_record: false) ⇒ Object 



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# File 'lib/arrow/record-containable.rb', line 26

def each_record(reuse_record: false)
  unless block_given?
    return to_enum(__method__, reuse_record: reuse_record)
  end

  if reuse_record
    record = Record.new(self, nil)
    n_rows.times do |i|
      record.index = i
      yield(record)
    end
  else
    n_rows.times do |i|
      yield(Record.new(self, i))
    end
  end
end

#find_column(name_or_index) ⇒ Object 



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# File 'lib/arrow/record-containable.rb', line 44

def find_column(name_or_index)
  case name_or_index
  when String, Symbol
    name = name_or_index.to_s
    index = resolve_column_name(name)
    return nil if index.nil?
    columns[index]
  when Integer
    index = name_or_index
    columns[index]
  else
    message = "column name or index must be String, Symbol or Integer"
    raise ArgumentError, message
  end
end