Thiago Holanda unnamedd

Install Swift on Ubuntu

Requirements

Ubuntu 14.04, 16.04, or 16.10

Step 1 - Dependencies

Open up terminal
Install core deps: sudo apt-get install clang libicu-dev git

Step 1.1 - Ubuntu 14.04 Clang

I recently switched over to neovim (see my screenshots at the bottom). Below is my updated config file.

It's currently synchronized with my .vimrc config except for a block of neovim-specific terminal key mappings.

This is still a work in progress (everyone's own config is always a labor of love), but I'm already extremely pleased with how well this is working for me with neovim. While terminal mode isn't enough to make me stop using tmux, it is quite good and I like having it since it simplifies my documentation workflow for yanking terminal output to paste in a markdown buffer.

These days I primarily develop in Go. I'm super thrilled and grateful for fatih/vim-go,

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.

A composable pattern for pure state machines with effects

State machines are everywhere in interactive systems, but they're rarely defined clearly and explicitly. Given some big blob of code including implicit state machines, which transitions are possible and under what conditions? What effects take place on what transitions?

There are existing design patterns for state machines, but all the patterns I've seen complect side effects with the structure of the state machine itself. Instances of these patterns are difficult to test without mocking, and they end up with more dependencies. Worse, the classic patterns compose poorly: hierarchical state machines are typically not straightforward extensions. The functional programming world has solutions, but they don't transpose neatly enough to be broadly usable in mainstream languages.

Here I present a composable pattern for pure state machiness with effects,

Automatic build versions from git in Xcode (and other goodies)

Installation procedure for pre-build actions to automatically populate Xcode Info.plist with dynamic data.

1. Xcode Scheme pre-action

Edit Xcode Scheme and add a pre-action script. Copy the contents of preaction.sh into the pre-action script box.

Quick access

2025

April

Protecting keys with the Secure Enclave

Create an extra layer of security for your private keys.

Keeping a private key in a keychain is a great way to secure it. The key data is encrypted on disk and accessible only to your app or the apps you authorize. However, to use the key, you must briefly copy a plain-text version of it into system memory. While this presents a reasonably small attack surface, there’s still the chance that if your app is compromised, the key could also become compromised. As an added layer of protection, you can protect a private key using the Secure Enclave. >

	/*
	MKR1000 + PIXIE 3w leds
	without sofrwareSerial

	UNO -> 1(TX)
	MKR1000 -> 14(TX)
	*/

	//#include "SoftwareSerial.h"
	#include "Adafruit_Pixie.h"

	struct Keycode {

	// Layout-independent Keys
	// eg.These key codes are always the same key on all layouts.
	static let returnKey : UInt16 = 0x24
	static let enter : UInt16 = 0x4C
	static let tab : UInt16 = 0x30
	static let space : UInt16 = 0x31
	static let delete : UInt16 = 0x33
	static let escape : UInt16 = 0x35

	#include <Servo.h>

	Servo myservo;

	const int servoPin = 9;
	const int buttonPin = 12;
	const int ledPin = 13;

	void setup() {
	myservo.attach(servoPin);

	let styles: [UIFont.TextStyle] = [
	// iOS 17
	.extraLargeTitle, .extraLargeTitle2,
	// iOS 11
	.largeTitle,
	// iOS 9
	.title1, .title2, .title3, .callout,
	// iOS 7
	.headline, .subheadline, .body, .footnote, .caption1, .caption2,
	]