CoffeeScript wrap up values within function objects? Kind of currying?

simple_sheet.coffee

class SimpleSheet
  # Returns object where each property
  # represent the index in the array
  @indices: (columnNames) ->
    result = {}
    result[name] = i for i, name of columnNames
    result

  constructor: (@gsheet) ->
    range = @gsheet.getDataRange()
    table = range.getValues()

    # Pass table 0th row to indices fn and remove that
    # row from table array.
    indices = SimpleSheet.indices table.shift()

    @rowForIndex = do (table) -> (index) ->
      table[index]

    @valueForColumn = do (indices) -> (row, column) ->
      row[indices[column]]

sheet = new SimpleSheet(dataSheet)
row   = sheet.rowForIndex 3
value = row.valueForColumn 'InvoiceNumber'