rgruesbeck

// Matrix with a strided array

class Matrix {
  constructor (rows, cols) {
    this.rows = rows;
    this.cols = cols;
    this.data = Array(rows * cols).fill(null);
  }
  
  get(x, y) {

rgruesbeck

const app = document.getElementById("app")

const render = (root) => {
  let nodes = []
  
  return function(strings, ...expressions) {
    if (root.childElementCount > 0 && nodes.length > 0 && nodes.length === expressions.length) {
      // update nodes in list with matching expressions

      nodes.forEach((node, idx) => {

rgruesbeck

# Loan Calc

principle, interestRate, loanLength

principle * (interestRate / (1 - (1 + interestRate) ** -loanLength))

Loan Amount, Monthly Interest Rate (1% = 0.01), Loan Length in Months

Per Month

rgruesbeck

Permissions Table (mnt Smart)

Name	type:web	type:privileged	type:certified
geolocation	!	!	!
geolocation-noprompt	✕	✕	✓
mmi-test	✕	✕	✓
camera	✕	!	✓
alarms	✓	✓	✓
tcp-socket	✕	✓	✓
udp-socket	✕	✓	✓

rgruesbeck

class Storage {
    constructor(name) {
        this.name = name;
        this.read();
    }

    // return data
    list() {
        return this.read();
    }

rgruesbeck

Van Lyfe Wifi

Parts List

• 4G Router
• AT&T Sim
• LTE Service

Sim Config

• Device: /dev/ttyUSB2
• Service: LTE/UMTS/GPRS
• APN: Broadband

rgruesbeck

1. record with simplescreenrecorder to mkv
2. make frames:

mkdir frames
ffmpeg -i input -vf scale=320:-1:flags=lanczos,fps=10 frames/ffout%03d.png

3. convert to gif

convert -loop 0 frames/ffout*.png output.gif

rgruesbeck

// Mobile fixes

// prevent scroll/refresh
document.addEventListener('touchmove', function(e) {
    e.preventDefault();
}, { passive: false }) 

rgruesbeck

#!/bin/sh

# Black        0;30     Dark Gray     1;30
# Red          0;31     Light Red     1;31
# Green        0;32     Light Green   1;32
# Brown/Orange 0;33     Yellow        1;33
# Blue         0;34     Light Blue    1;34
# Purple       0;35     Light Purple  1;35
# Cyan         0;36     Light Cyan    1;36
# Light Gray   0;37     White         1;37

rgruesbeck

overview: https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Optimizing_canvas
garbage collection: http://buildnewgames.com/garbage-collector-friendly-code/
bitwise optimizations: https://galactic.ink/journal/2011/11/bitwise-gems-and-other-optimizations/
perf: https://developers.google.com/web/tools/chrome-devtools/rendering-tools/