paulcuth

Running ES6 in Node

The latest versions of Node do support most of the ES6 syntax. However, notably, they still do not support import and export expressions. In order to use these espressions we can turn to Babel.

Babel provides a wrapper around Node that automatically translates a given source file before running it in the normal Node application installed on your machine. This wrapper application is called babel-node and is provided in the babel-cli package.

However, import and export translators are not in the core Babel functionality, we'll need to add a preset. The translators needed here are in the es2015 Babel preset.

paulcuth

Deploying Sailor to Heroku

Getting set up

Heroku basics

You will need to create an Heroku account if you don't have one already. You'll also need to install the Heroku Toolbelt, which includes the Heroku CLI that we'll be using shortly.

Sailor basics

Follow the installation instructions for your platform in the Sailor docs, but essentially all you need is the sailor CLI.

paulcuth

-- You could setup global vars:
for k,v in ipairs{3,10,4,9,2,1,nil,nil,nil,11,12,nil,6,7,5,8,0} do _G['GPIO'..k-1]=v end

-- and use them like this:
gpio.mode(GPIO2, gpio.OUTPUT)
gpio.write(GPIO2, gpio.WRITE)

paulcuth

gpio.write(8,0)	--> Input
gpio.write(9,0)	--> Clock

current = 8;

function set (val)
	local zeros = 0
	local ones = 0
	if (val < current) then

paulcuth

This is a little experiment and my first Lua project aimed at performance in LuaJIT.

Most of the code is bootstrap, but at the bottom you'll find some tests followed by some benchmarking code.

I'm surprised to find that the benchmarking code runs 4x faster with the tests included than when they're removed. In fact, just removing the print() statement at the end of the tests makes the benchmark run a lot slower. Why is this?

(Unfortunately, I haven't been able to reduce the code sample and still maintain the same behaviour.)

paulcuth

Slimdown

This is a Lua port of of jbroadway's PHP project of the same name.

A very basic pattern-based Markdown parser. Supports the following elements (and can be extended via slimdown.addRule()):

• Headers
• Links
• Bold

paulcuth

Moonshine questions

https://github.com/gamesys/moonshine/

What is your table representation?

• Weak tables?
• non-string keys?
• ES6 maps?
• issues with 'hasOwnProperty'?

paulcuth

[[{"driverNumber":1,"duration":121790},{"driverNumber":3,"duration":125239},{"driverNumber":2,"duration":125298},{"driverNumber":10,"duration":125768},{"driverNumber":5,"duration":127046},{"driverNumber":4,"duration":127716},{"driverNumber":9,"duration":127937},{"driverNumber":6,"duration":128740},{"driverNumber":15,"duration":129128},{"driverNumber":11,"duration":129804},{"driverNumber":19,"duration":130567},{"driverNumber":7,"duration":131135},{"driverNumber":8,"duration":131346},{"driverNumber":14,"duration":131810},{"driverNumber":16,"duration":132738},{"driverNumber":12,"duration":133007},{"driverNumber":20,"duration":133869},{"driverNumber":18,"duration":134774},{"driverNumber":21,"duration":134824},{"driverNumber":22,"duration":135978},{"driverNumber":23,"duration":136626},{"driverNumber":17,"duration":137676}],[{"driverNumber":1,"duration":117127},{"driverNumber":2,"duration":116963},{"driverNumber":10,"duration":117795},{"driverNumber":5,"duration":119307},{"driverNumber":9,"duration":118701},{"drive

paulcuth

[
   {
      "driverNumber":7,
      "tyres":[
         "supersoft",
         "medium",
         "medium"
      ]
   },
   {

paulcuth

[
   [
      {
         "driverNumber":1,
         "duration":99646
      },
      {
         "driverNumber":4,
         "duration":101714
      },