I pushed back the publication of this entry because I wasn’t so happy with the implementation I had. It’s a new chapter in the “The Little Book of Semaphores”: not so-classical problems. The first problem there is called “search-insert-delete”...
This is the story on how I speed up my terminal load time. Some time ago I shared my dotfiles to the world. I was never really happy with the shell load time, though. Most of it was spent by antigen loading the plugins I use. By then, my shell was taking almost 10 seconds to load...
This post shows how to marshall NULL values from the database into Go struct and how to avoid mistakes during fetching optional values with SELECT query. I’ll show standard types sql.NullString, sql.NullInt64, etc types.
Section 5.7 of “The Little Book of Semaphores” presents the last of the “less classical” synchronization problems. It’s another problem presented in “Concurrent Programming”, called “the roller coaster problem” and attributed...
In section 5.6 of “The Little Book of Semaphores”, Allen Downey says this problem might have originally come from Anthony Joseph at U.C. Berkeley: Somewhere near Redmond, Washington there is a rowboat that is used by both Linux hackers and Microsoft employees (serfs)...
In section 5.5 of “The Little Book of Semaphores” the following is called “building H₂O”: There are two kinds of threads, oxygen and hydrogen. In order to assemble these threads into water molecules, we have to create a barrier that makes each thread wa...
“The Little Book of Semaphores” presents the following as the “Santa Claus problem”, and attributes it to William Stallings: Stand Claus sleeps in his shop at the North Pole and can only be awakened by either (1) all nine reindeer being back from their va...