HowTo

Scala Extractors

Scala’s extractors and unapply() represent a concept that I haven’t grok’ed until now. Most demonstrations seem to be too long or use the same types everywhere. Here are my thoughts on the concept; val a: C = ??? val i: I = ??? i match { case a(f: O) => ??? } This will try to call the below method class C { def unapply(i: I): Option[O] = ??? } There’s some more flexibility;

Moving Platforms in Unity3D

This is a short example of moving platforms in Unity3D. Based on this tweet, I spent … 30 minutes? Maybe? putting it together. This writeup took longer. The approach uses two behaviour classes to achive the classical effect of moving platforms that follow some path. mark some empty GameObject as Waypoint instances give each Waypoint a next field attach a Mover instance to your platform(s) drag the platform towards the next Waypoint at a fixed rate when you’ve reached the Waypoint, continue with its next one My example;

Pi3 nGinx Reverse Proxy

So … you’ve got a Pi3 running as a Docker host with some services that you want your buddies to have access to. You could try and get them to SSH into your home network; just like you could type all your programs with a touchscreen. I’m going to use nGinx to setup a reverse-proxy from my real-Pi3 to various Docker containers based on URL rewriting. I’m doing something else (of course) I’m setting up (what I call) name-based-virtual-hosting.

GoGS on a Pi3 (via Docker)

I’ve been assembling a “full stack”1 for development that runs on my Pi3. This is all happening inside of Docker containers which made cleanup redonkulously easy. Today I was looking at a source code management system; something of a “my own GitHub” which I can run on my own network.

Pi3 NameCheap

This is a followup to a previous post because that one stopped working, now - this works. There’s not a lot of OC here, just clarity. NameCheap DynDNS on a Pi3 I use NameCheap (because they’re anti-SOPA) for DNS. The client program, ddclient, can connect to NameCheap. I’m using raspbian, so, first; run sudo apt-get install ddclient on your Pi find the dynamic DNS settings on NameCheap’s website Dashboard >>> Domain List >>> Manage >>> Advanced DNS they do like to change these things around halfway down the page, there should be a DYNAMIC DNS thingie enable it (if you haven’t already) note the blurb-what-looks-like-a-SHA edit your /etc/ddclient.