Louie de la Rosa luisdelarosa

Using Swift Package Manager with iOS

Step 1:

File > New > Project...

Step 2:

Create a Package.swift file in your root project directory, add dependencies, then run swift package fetch on the command line in the same directory. We’re not going to run swift build because it will just complain.

Running Ubuntu 16.04.1 armhf on Qemu

This is a writeup about how to install Ubuntu 16.04.1 Xenial Xerus for the 32-bit hard-float ARMv7 (armhf) architecture on a Qemu VM via Ubuntu netboot.

The setup will create a Ubuntu VM with LPAE extensions (generic-lpae) enabled. However, this writeup should also work for non-LPAE (generic) kernels.

The performance of the resulting VM is quite good, and it allows VMs with >1G ram (compared to 256M on versatilepb and 1G on versatile-a9/versatile-a15). It also supports virtio disks whereas versatile-a9/versatile-a15 only support SD cards via the -sd argument.

Get netboot files

CocoaPods + Xcode Continuous Integration

Script:

cd ${SRCROOT}
if [ -e "Pods" ]
then
pod install
else
touch Pods

	;K Line Test created by Sebastianv650
	; from https://mattshub.com/2017/10/02/linear-advance/
	; updated for PETG temperatures by luisdelarosa (@louielouie)
	; hotend 240C
	; bed 85C

	M107
	M83 ; extruder relative mode
	M104 S240 ; set extruder temp
	M140 S85 ; set bed temp

	{
	"version": "0.2.0",
	"configurations": [
	{
	"name": "Example",
	"type": "node",
	"request": "launch",
	"runtimeExecutable": "node",
	"runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"],

	# Install QEMU OSX port with ARM support
	sudo port install qemu +target_arm
	export QEMU=$(which qemu-system-arm)

	# Dowload kernel and export location
	curl -OL \
	https://github.com/dhruvvyas90/qemu-rpi-kernel/blob/master/kernel-qemu-4.1.7-jessie
	export RPI_KERNEL=./kernel-qemu-4.1.7-jessie

	# Download filesystem and export location

	# pulled from http://xecdesign.com/qemu-emulating-raspberry-pi-the-easy-way/
	# expanded via http://superuser.com/questions/690060/how-to-enable-network-with-a-raspberry-pi-emulated-on-qemu
	# tested with 2015-02-16-raspbian-wheezy.zip on OSX Mavericks

	# OSX terminal
	brew install qemu
	# kernel-qemu is a linux kernel compiled with ARM1176 support.
	# learn more here: http://xecdesign.com/compiling-a-kernel/
	curl -OL http://xecdesign.com/downloads/linux-qemu/kernel-qemu
	curl -o raspbian_latest.zip -L http://downloads.raspberrypi.org/raspbian_latest

	#!/bin/sh

	UNIVERSAL_OUTPUTFOLDER=${BUILD_DIR}/${CONFIGURATION}-universal

	# make sure the output directory exists
	mkdir -p "${UNIVERSAL_OUTPUTFOLDER}"

	# Step 1. Build Device and Simulator versions
	xcodebuild -target "${PROJECT_NAME}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
	xcodebuild -target "${PROJECT_NAME}" -configuration ${CONFIGURATION} -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build

	// Let's define a basic Swift class.
	class Fruit {
	var type=1
	var name="Apple"
	var delicious=true
	}

	// We can get at some info about an instance of an object using reflect(), which returns a Mirror.
	reflect(Fruit()).count
	reflect(Fruit())[1].0

	extension Array {

	func first() -> Element? {
	if isEmpty {
	return nil
	}
	return self[0]
	}

	func last() -> Element? {