Blog

📜

MongoDB Aggregation Stages: addFiels (set) / project (unset) / replaceRoot (replaceWith)

Posted by Yao Yao on February 9, 2022

Digest of Working Effectively with Legacy Code

Posted by Yao Yao on December 23, 2021

mongoexport is WAY FASTER than MongoDB Compass' Export Collection UI, but...

Posted by Yao Yao on December 1, 2021

OS: SELECT(2), POLL(2), and their variants

Posted by Yao Yao on November 5, 2021

URL Parameters / URL Query / Tornado get_argument()

Posted by Yao Yao on November 4, 2021

Closest Pair of Points

Posted by Yao Yao on October 24, 2021

Python: Socket Programming 101

Posted by Yao Yao on October 15, 2021

A socket is like an endpoint... or a line segment

Posted by Yao Yao on October 15, 2021

Python: synchronization primitives

Posted by Yao Yao on September 29, 2021

Python: sharing states between processes

Posted by Yao Yao on September 29, 2021