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CSV.new(data, options = Hash.new) -> CSV (18221.0)

• 2.1.0
• 2.2.0
• 2.3.0
• 2.4.0
• 2.5.0
• 2.6.0
• 2.7.0
• 3.0
• 3.1
• 3.2
• 3.3
• 3.4

• 特異メソッド

このメソッドは CSV ファイルを読み込んだり、書き出したりするために String か IO のインスタンスをラップします。

...($/) is used. Obviously,
discovery takes a little time. Set manually if speed is important. Also
note that IO objects should be opened in binary mode on Windows if this
feature will be used as the line-ending translation can cause
problems with resetting the document position to wher...

...e
1,taro,tanaka,20
2,jiro,suzuki,18
3,ami,sato,19
4,yumi,adachi,21
EOS

File.write("test.csv", users)

File.open("test.csv", "r") do |f|
csv = CSV.new(f, headers: true)
csv.class # => CSV
csv.first # => #<CSV::Row "id":"1" "first name":"taro" "last name":"tanaka" "age":"20">
end
//}

//emlist[...

...み][ruby]{
require "csv"

users =<<-EOS
id|first name|last name|age
1|taro|tanaka|20
2|jiro|suzuki|18
3|ami|sato|19
4|yumi|adachi|21
EOS

csv = CSV.new(users, headers: true, col_sep: "|")
p csv.class # => CSV
p csv.first # => #<CSV::Row "id":"1" "first name":"taro" "last name":"tanaka" "age":"20">...

• ARGF
• CSV
• CSV::Row
• CSV::Table
• IO
• String
• StringIO