#书
清华大学严蔚敏老师去世（见微博）。
当年学习数据结构，就是看的严蔚敏的数据结构书入门的。大一的暑假，只剩我一个人的宿舍里，对着蓝色界面的TC2.0，把书里的伪代码敲成C语言，调试代码里的问题，至今那个暑假的夏天仍然是我美好的回忆。
BY codedump的电报频道
Launched in 2013, Telegram allows users to broadcast messages to a following via “channels”, or create public and private groups that are simple for others to access. Users can also send and receive large data files, including text and zip files, directly via the app.The platform said it has more than 500m active users, and topped 1bn downloads in August, according to data from SensorTower.
Telegram has made it easier for its users to communicate, as it has introduced a feature that allows more than 200,000 users in a group chat. However, if the users in a group chat move past 200,000, it changes into "Broadcast Group", but the feature comes with a restriction. Groups with close to 200k members can be converted to a Broadcast Group that allows unlimited members. Only admins can post in Broadcast Groups, but everyone can read along and participate in group Voice Chats," Telegram added.
codedump的电报频道 from no