I noticed that in this book on bioinformatics with Ruby (the programming language!) (Rubyではじめるバイオインフォマティクス―生物系のためのプログラミング入門), the authors sometimes used romanized Japanese in code examples. For ...
Using my computer, I type a lot of numbers in Japanese text, and I am not sure when to use half-width or full-width. Are there rules? Right now I only use half-width, is it fine? Off-topic: Here is ...