∫ntegrabℓε ∂iﬀerentiαℓs · unorganised notes, code, and writings of random topics

Mandelbrot set SQL

using common table expressions in SQLite

January 22, 2018 blog code math

There is a recent change in SQLite documentation, that depicts the use of common table expressions (CTEs) in SQLite to draw a Mandelbrot set using ASCII art: [more]

Recently I found the ORID conversation method a hot topic in Taiwan. I can even see Audrey Tang (of Perl 6) have a video explaining how she use it in her job in the government. Below are some notes and examples, and all the web resources from which I learned... [more]

Simplifying surds

January 16, 2018 blog math

Recently I am investigating some geometric construction (i.e., compass and ruler constructions) and encounter into the issue of finding sine for some angles. I remember most whole number degree angles could be expressed in surd forms, only it is less pretty than the standard angles of 30°, 45°, 60°. Mostly... [more]

Enhancing parsing expression grammar

January 13, 2018 blog code

Parsing expression grammar (PEG) was introduced by Bryan Ford in 20041. Its characteristic is its output is a single, non-ambiguous parse tree. Bryan Ford (2004). “Parsing Expression Grammars: A Recognition Based Syntactic Foundation”. Proceedings of the 31st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages. ACM. ↩ [more]

Cracking the Code to a Successful Interview

Evan Pellett / 2016

January 5, 2018 book

Interviewer (hiring manager) have unconscious questions to be answered by each candidate Unconscious questions: achievement, process, creativity, relationships, aggressiveness, likeability Managers aren’t even aware of asking the unconscious questions [more]