a666666
https://blog.hatena.ne.jp/a666666/
@kyanny's blog
https://blog.kyanny.me/
link-edge(prod)> ppp st1.answer_usages.first {"answer_attempt"=> {"_type"=>"MultipleChoiceAttempt", "choices"=>[BSON::ObjectId('57984b7c9c1cfd59cf00002c')], "correct"=>true, "id"=>BSON::ObjectId('5963fe1e0e056d709b002235')}, "correct"=>true, "created_at"=>Mon, 10 Jul 2017 22:22:22 UTC +00:00, "id"=>…
190
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Hatena Blog
https://hatena.blog
2018-03-16 22:34:46
def ppp(o); pp o.as_json; nil; end
rich
https://blog.kyanny.me/entry/2018/03/16/223446
1.0
100%