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instance method

CSV::Table#by_col!

by_col!

# File tmp/rubies/ruby-3.0.5/lib/csv/table.rb, line 76
def by_col!
  @mode = :col

  self
end

Switches the mode of this table to column mode. All calls to indexing and iteration methods will work with columns until the mode is changed again.

This method returns the table and is safe to chain.

See also #by_col #by_col_or_row #[]= #by_col_or_row! also in 3.3 · 3.2 · 3.1