I discovered a site called Code Wars which I'm going to use to help me learn JavaScript and tighten up my programming in general. So I signed up and played around with one of the Katas on the site.

One of the things I noticed on the site was that …

Once again I find myself confronted with the peculiarities of JavaScript's type coercion (as explained in the first chapter of Eloquent JavaScript). I ran into these before and it frustrated me how JavaScript would do conversions that were heavily weighted towards strings:

"5" + 1  // Returns '51' because of string concatenation …

Days 28-Fin (the end of the month) had me looking more into the ZX Spectrum's memory mapped screen memory. I don't think I completely understand it yet but what I do understand is it tries to make it really simple for folks to map out what is on the screen …

Day 27 and I'm playing more with the screen rendering. I'm going to need to re-read this though as there's a lot to unpack in this section. Nice bit through is there's some baked-in shortcuts in the ZX Spectrum for mapping screen memory that I remember reading in the ULA …

Day 26 and I looked into how to handle 16 bit loops. Spending a little time while my father-in-law is in the hospital for observation keeping my mind occupied. Looking into how to do the example code that the book showed in BASIC and translate it to Machine Code. Fun …