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Life is Study
Personal blog · ktoso.github.ioprogramming
Life is Study is a personal blog at ktoso.github.io about programming. Since 2014, 7 different Hacker News readers have linked it 7 times, most often “Scala’s Types of Types”. It is still writing: the last post was on 2025-10-25, and you can follow it by feed.
Too few sampled comments (2) to say how often HN recommends it.?
Why HN links it
HN readers link Life is Study for explanations of Scala's type system, such as its types of types and the unified type hierarchy. A post answering Scala interview questions also appears in discussion.
Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- Scala’s Types of Types4 people · 4 mentions · first linked 2014-04-05
What Hacker News says?
Because the type "Any" is the least upper bound of Int and Null. http://ktoso.github.io/scala-types-of-types/#unified-type-sy...
Comment linking /scala-types-of-types/
on “Scala’s Types of Types”Submitted Scala’s Types of Types as a story · 120 points
HN discussionOriginal author here. this post was never a "memorize this and you will know scala" statement, or that if you know those answers you will get a scala job. I simply found those questions a while ago and decided to provide answers by myself as an exercise. I do believe some answers may not be completely right (even completely wrong), and others may be a starter for a nice and productive discussion. Also, knowing the a…
Comment linking /scala-types-of-types/
on “Scala interview questions”Submitted Scala's Types of Types as a story · 3 points
HN discussionSubmitted Insider Akka as a story · 2 points
HN discussionSubmitted Scala’s Types of Types as a story · 2 points
HN discussionSubmitted Scala’s Types of Types as a story · 1 points
HN discussion
