Tugulab Blog.

Half-formed ideas. Finished products. Everything learned along the way.

September 19, 2018

A chat with crypto enthusiast Phillip Liñan

Phillip Liñan on the tip from his father that led him to Bitcoin in 2014, trading forex and crypto full time, and explaining it all to everyone else.

September 17, 2018

A chat with crypto investor and engineer Lorenzo Decaria

How a software engineer approaches crypto investing: Lorenzo Decaria on trading since 2011, custom TradingView indicators and building a mining rig.

September 13, 2018

A Conversation with Crypto Trader and Investor James McDowall

First of a series of interviews with crypto investors: James McDowall on going from professional golf to wealth management and then to trading.

September 10, 2018

Are your crypto investment goals realistic?

A quick way to sanity-check a crypto target: work out the market cap it implies, then hold that number against Bitcoin, Ethereum and the world's gold.

September 6, 2018

Cryptocurrencies 24h Volume and Market Cap as price peak indicator

Reading 24h volume against market capitalisation to spot speculation: when the cap grows faster than the volume, the price is running ahead of the asset.

April 26, 2017

Introducing Swift Action Delegate pattern Part 2

Part two of the Action Delegate pattern: dropping the untyped Any sender and carrying it in the DelegateAction payload instead, so no casting is needed.

March 27, 2017

Why Swift protocol conforming values are treated as Value types by default?

An unconstrained Swift protocol makes the compiler treat every conforming value as a value type. Constraining it to classes is what changes that.

March 23, 2017

Introducing Swift Action Delegate pattern Part 1

Delegation is simple and robust but costs a new protocol per context. The Action Delegate pattern keeps the robustness with far less boilerplate.

August 11, 2016

How to use Xcode to write Swift code on a remote Linux machine

Mount a headless Linux box over ssh with OSXFuse and SshFS, then edit its Swift code in Xcode on your Mac and compile in a terminal on the machine.

August 4, 2016

Control the Raspberry Pi 2/3 GPIO pins with Swift 3.0 on Ubuntu 16.04

Pin numbers, a breadboard LED on GPIO4, WiringPi to prove the pin responds, and then turning it on and off from Swift 3.0 on Ubuntu 16.04.