Stig Otnes Kolstad stigok

Custom HTTP Routing in Go

Basic Routing

Responding to requests via simple route matching is built in to Go's net/http standard library package. Just register the path prefixes and callbacks you want invoked and then call the ListenAndServe to have the default request handler invoked on each request. For example:

package main

import (

Installing Python 3.6 on Raspbian

As of January 2018, Raspbian does not yet include the latest Python release, Python 3.6. This means we will have to build it ourselves, and here is how to do it. There is also an ansible role attached that automates it all for you.

Install the required build-tools (some might already be installed on your system).

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Angular2 + JSPM cheat sheet

First time setup

install jspm beta: npm install -g jspm@beta
set up your project: jspm init
install dependencies: jspm install angular2 reflect-metadata zone.js es6-shim

This will create a jspm_packages folder, and a config.js file.

Open the config.js file - this file manages options for the System.js loader - tweak it as appropriate

	type Thing struct {
	Text string
	Things []Thing
	}

	func RootHandler(rw http.ResponseWriter, req *http.Request) {
	tmpl, err := template.New("root").Parse(`
	<html>
	{{ define "message" }}
	<li>{{ .Text }}

	#!/bin/bash
	# made for tghack '17
	# desc: upload a file chunked through a shell with length
	# restrictions of commands. you might need to manually
	# tune the BUFLEN to stay within the limits. sh syntax
	# errors appears when you're out of bounds.
	#
	# todo: progress bar
	#
	HOST=${1}

	angular.module('ngApp')
	.directive('soundCloudPlayer', function () {
	return {
	restrict: 'E',
	template: '<iframe width="100%" height="465" scrolling="no" frameborder="no"></iframe>',
	link: function (scope, element, attrs) {
	var iframe = element.find('iframe');
	var settings = [
	'buying=false',
	'liking=false',

	// Karma configuration

	module.exports = function(config) {
	config.set({

	// base path that will be used to resolve all patterns (eg. files, exclude)
	basePath: '',

	// frameworks to use
	// available frameworks: https://npmjs.org/browse/keyword/karma-adapter

	package main

	import (
	"encoding/json"
	"fmt"
	"strconv"
	"strings"
	"time"
	)

	/* http://meyerweb.com/eric/tools/css/reset/
	v2.0 \| 20110126
	License: none (public domain)
	*/

	html, body, div, span, applet, object, iframe,
	h1, h2, h3, h4, h5, h6, p, blockquote, pre,
	a, abbr, acronym, address, big, cite, code,
	del, dfn, em, img, ins, kbd, q, s, samp,
	small, strike, strong, sub, sup, tt, var,