mritzco

// src/utils/CacheCollection.js
/**
 * Creates a collection of unique values in local storage
 * Works with arrays only
 * Singleton method to allow sharing between classes without adding extra stuff
 */
class CacheCollection {
    constructor (key, expire=1200) {
        this.key = key;
        this.expire = expire;

mritzco

// From https://www.sitepoint.com/cache-fetched-ajax-requests/
// All credits to: Peter Bengtsson
// Added Content-type to headers so it can go to traditional validation like fetch does
// Add some debugging messages: activate with { verbose: true }
// Add a request to be able to add headers instead of just calling URL

const CachedFetch = (url, options) => {

  let expiry = options.seconds || 5 * 60 // 5 min default
  let logger = (options.verbose) ? console.log : function(){};

mritzco

Running your own private blockchain and connecting to it.

1. Start bootnode and private network

Go to wherever you want to run this.

  mkdir privatechain
  cd privatechain/
  
  touch genesis.json 
 mkdir data

mritzco

const fs = require('fs-extra');
const methods = {}, priv = {};
// Private methods to do string replacement. Not optimized and cummulative trying to keep it simple.
// far better options here: https://stackoverflow.com/questions/5069464/replace-multiple-strings-at-once
priv.replaceObj = function(value, vars) {
    let obj = value;
    Object.keys(obj).forEach(function(item) {
        obj[item] = priv.replaceStr(obj[item], vars);
    });
    return obj;

mritzco

// hard disk holder


module stand(
   wall=3,
   height=20,
   dw=20,
   dd=80
) {
   wall2 = wall*2;

mritzco

// http://www.teacherschoice.com.au/Maths_Library/Trigonometry/triangle_given_3_points.htm
const triangle = {
    corners: {},
    angles:{},
    sides: {},
    create: function (a,b,c,d,e,f) {
        this.corners.A = [ a, b ],
        this.corners.B = [ c, d ],
        this.corners.C = [ e, f ]
        return this;

mritzco

0x0a47bDaf1b1FD7E79273e286717Cb001cc05Bc48

mritzco

Running ar.js from your own computer

The Error

I tried to run https://dev.to/andraconnect/augmented-reality-in-10-lines-of-html and https://github.com/jeromeetienne/ar.js from my own computer and got the following error:

Can't access user media :()

This error comes from:

https://github.com/jeromeetienne/jsartoolkit-experiments/blob/master/basic.html Line 100: navigator.getUserMedia

mritzco

/* FROM LESS */
svg.clock {
  background: #ffffff;
  width: 120px;
  height: 120px;
  /* Don't define height - not overridable */
  fill: none;
  /* time markers */
  /* Clock face and center */
}

mritzco

{
    "fileExtensions": [".less", ".css"],
    "excludedFiles": ["src/less/*.less"],
    "spaceAfterPropertyColon": {
        "enabled": true,
        "style": "one_space" // Comments are allowed
    },
    "maxCharPerLine": 999999,
    "spaceAfterPropertyColon": "no_space",
    "urlQuotes": false,