6

直接翻译就是这样了吧

arrs.sort { |arr1, arr2| arr1.first == arr2.first ? (arr2.last <=> arr1.last) : (arr1.first <=> arr2.first) }

这样搞不知道行不行

arrs.sort { |arr1, arr2| (arr1.first <=> arr2.first) + (arr2.last <=> arr1.last) }

还有 哈哈哈

我昨天刚google这个问题，你把报错信息丢到google, 第一个结果好像就是

学Ruby可以解决单身的问题，我试过

十分感谢，问题解决了。嗯，我思路错了，应该去看看七牛的文档

那历史总topic也不多...

@wesley6j reddit不错！

新问题没法置顶是吧。。

这个问题最近又出现了，貌似

format.js { render js: "window.location = '#{course_sections_path(@course)}'" }

不管用了

ActionController::RoutingError (No route matches [DELETE] "/courses/5c122c196799f367fb742aa8/sections"):
  actionpack (4.2.5) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  lograge (0.7.1) lib/lograge/rails_ext/rack/logger.rb:15:in `call_app'
  railties (4.2.5) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.2.5) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.2.5) lib/rails/rack/logger.rb:20:in `call'
  quiet_assets (1.1.0) lib/quiet_assets.rb:27:in `call_with_quiet_assets'
  request_store (1.3.2) lib/request_store/middleware.rb:9:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.6.10) lib/rack/methodoverride.rb:22:in `call'
  rack (1.6.10) lib/rack/runtime.rb:18:in `call'
  activesupport (4.2.5) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
  rack (1.6.10) lib/rack/lock.rb:17:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/static.rb:116:in `call'
  rack (1.6.10) lib/rack/sendfile.rb:113:in `call'
  sentry-raven (2.7.3) lib/raven/integrations/rack.rb:51:in `call'
  railties (4.2.5) lib/rails/engine.rb:518:in `call'
  railties (4.2.5) lib/rails/application.rb:165:in `call'
  rack (1.6.10) lib/rack/content_length.rb:15:in `call'
  thin (1.7.2) lib/thin/connection.rb:86:in `block in pre_process'
  thin (1.7.2) lib/thin/connection.rb:84:in `catch'
  thin (1.7.2) lib/thin/connection.rb:84:in `pre_process'
  thin (1.7.2) lib/thin/connection.rb:53:in `process'
  thin (1.7.2) lib/thin/connection.rb:39:in `receive_data'
  eventmachine (1.2.5) lib/eventmachine.rb:194:in `run_machine'
  eventmachine (1.2.5) lib/eventmachine.rb:194:in `run'
  thin (1.7.2) lib/thin/backends/base.rb:73:in `start'
  thin (1.7.2) lib/thin/server.rb:162:in `start'
  rack (1.6.10) lib/rack/handler/thin.rb:19:in `run'
  rack (1.6.10) lib/rack/server.rb:287:in `start'
  railties (4.2.5) lib/rails/commands/server.rb:80:in `start'
  railties (4.2.5) lib/rails/commands/commands_tasks.rb:80:in `block in server'
  railties (4.2.5) lib/rails/commands/commands_tasks.rb:75:in `tap'
  railties (4.2.5) lib/rails/commands/commands_tasks.rb:75:in `server'
  railties (4.2.5) lib/rails/commands/commands_tasks.rb:39:in `run_command!'
  railties (4.2.5) lib/rails/commands.rb:17:in `<top (required)>'
  bin/rails:9:in `require'
  bin/rails:9:in `<top (required)>'
  spring (2.0.2) lib/spring/client/rails.rb:28:in `load'
  spring (2.0.2) lib/spring/client/rails.rb:28:in `call'
  spring (2.0.2) lib/spring/client/command.rb:7:in `call'
  spring (2.0.2) lib/spring/client.rb:30:in `run'
  spring (2.0.2) bin/spring:49:in `<top (required)>'
  spring (2.0.2) lib/spring/binstub.rb:31:in `load'
  spring (2.0.2) lib/spring/binstub.rb:31:in `<top (required)>'
  bin/spring:13:in `require'
  bin/spring:13:in `<top (required)>'
  bin/rails:3:in `load'
  bin/rails:3:in `<main>'

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