20231017

 Fell asleep around 1 and got up around 7:30 to have breakfast. Started to work at 8:30 as usual. Completed the refactoring with unit test when it was noon. Played Zelda after lunch as before, then worked for a while, to add a built-in datetime type. Wanted to implement it in a more dynamic way, but currently I could just accept that it's a built-in type, so I could move on to other features. After it's able to run function at runtime, I could rewrite it. Won't affect database related codes since it got stored as string anyway. Played FIFA after 3, and until dinner. Completed 7 pomodoroes for work today.