Method: CSV#each

Defined in:

lib/csv.rb

#each(&block) ⇒ Object

:call-seq:

csv.each -> enumerator
csv.each {|row| ...}

Calls the block with each successive row. The data source must be opened for reading.

Without headers:

string = "foo,0\nbar,1\nbaz,2\n"
csv = CSV.new(string)
csv.each do |row|
  p row
end

Output:

["foo", "0"]
["bar", "1"]
["baz", "2"]

With headers:

string = "Name,Value\nfoo,0\nbar,1\nbaz,2\n"
csv = CSV.new(string, headers: true)
csv.each do |row|
  p row
end

Output:

<CSV::Row "Name":"foo" "Value":"0">
<CSV::Row "Name":"bar" "Value":"1">
<CSV::Row "Name":"baz" "Value":"2">

---

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

string = "foo,0\nbar,1\nbaz,2\n"
csv = CSV.new(string)
csv.close
# Raises IOError (not opened for reading)
csv.each do |row|
  p row
end

# File 'lib/csv.rb', line 2554

def each(&block)
  return to_enum(__method__) unless block_given?
  begin
    while true
      yield(parser_enumerator.next)
    end
  rescue StopIteration
  end
end