csv

書き込み

• headerのセット
• パスのセット

require 'csv'


peoples = [
 ['alice', 14, 'femal'],
 ['alice', 15, 'femal'],
 ['alice', 16, 'femal'],
]


headers = ["名前", "年齢", "性別"]

file_path = "./test.csv"

CSV.open(file_path, 'w', headers: headers ) do |row|
  row << headers
  peoples.each do |pe|
    row << pe
  end
end

読み込み

• headers trueを適応
• 要素を出力する

require 'csv'


file_path = "./test.csv"


CSV.foreach(file_path, headers: true) do |row|
  p row
end

CSV.foreach(file_path, headers: true) do |row|
    p row["名前"]
    p row["年齢"]
    p row["性別"]
end