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CSV#write_headers? -> bool (18343.0)

• 2.4.0

• インスタンスメソッド

ヘッダを出力先に書き込む場合は真を返します。 そうでない場合は偽を返します。

...st[例][ruby]{
require "csv"

csv = CSV.new("date1,date2\n2018-07-09,2018-07-10")
csv.write_headers? # => nil

header = ["header1", "header2"]
row = ["row1_1", "row1_2"]
result = CSV.generate(headers: header, write_headers: false) do |csv|
csv.write_headers? # => false
csv << row
end
result # =>...

..."row1_1,row1_2\n"

result = CSV.generate(headers: header, write_headers: true) do |csv|
csv.write_headers? # => true
csv << row
end
result # => "header1,header2\nrow1_1,row1_2\n"
//}

@see CSV.new...