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CSV
. new(data , options = Hash . new) -> CSV (18220.0) -
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。
...g that you
would have the same line endings there. If none of those sequences is
found, +data+ is ARGF, Object::STDIN, Object::STDOUT, or
Object::STDERR, or the stream is only available for output, the default
$INPUT_RECORD_SEPARATOR ($/) is used. Obviously,
discovery takes a little ti......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">...