End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

CSV#readlines

readlines

# File tmp/rubies/ruby-3.2.0/lib/csv.rb, line 2594
def read
  rows = to_a
  if parser.use_headers?
    Table.new(rows, headers: parser.headers)
  else
    rows
  end
end

Alias of #read

Forms the remaining rows from self into:

A CSV::Table object, if headers are in use.
An Array of Arrays, otherwise.

The data source must be opened for reading.

Without headers:

Example

string = "foo,0\nbar,1\nbaz,2\n"
path = 't.csv'
File.write(path, string)
csv = CSV.open(path)
csv.read # => [["foo", "0"], ["bar", "1"], ["baz", "2"]]

With headers:

Example

string = "Name,Value\nfoo,0\nbar,1\nbaz,2\n"
path = 't.csv'
File.write(path, string)
csv = CSV.open(path, headers: true)
csv.read # => #<CSV::Table mode:col_or_row row_count:4>

Raises an exception if the source is not opened for reading:

Example

string = "foo,0\nbar,1\nbaz,2\n"
csv = CSV.new(string)
csv.close
# Raises IOError (not opened for reading)
csv.read

See also #read .readlines #readline #return_headers? also in 3.3 · 3.1 · 3.0

‹ prev#readline next ›#return_headers?