Image by Steve Buissinne from Pixabay

We’ll start by creating a structure that holds the data for a single trade.

A trade is made up of an amount, a price, and a value. All of the trades are stored in the TradesModel, which will make all of the calculations necessary for DCA (dollar-cost averaging).

The didSet


Image by Ahmad Ardity from Pixabay

In 2014, the PowaTag mobile payments app launched with 240 retailers on board.

The product centred around an app that allowed you to buy any product you come across in the real world. If it was a billboard, you would scan a QR code. On the radio, the app could…


Image by Reimund Bertrams from Pixabay

It takes just a cursory glance at Wikipedia to discover that HODL “originated in a December 2013 post on the Bitcoin Forum message board” where a presumably drunk user wrote “I AM HODLING.” …


Image by Charles Thompson from Pixabay

Moving average convergence divergence (MACD) is an indicator that shows the direction of a trend.

The MACD line is calculated by subtracting the 26-period Exponential Moving Average (EMA) from the 12-period EMA. …


Image by S K from Pixabay

Let’s start by giving a basic definition of the terms involved.

What is short selling?

Shorting is pretty easy to explain.

If I sell a bitcoin, I have ‘cash’ in the form of a stablecoin like USDT or BUSD. …


Image by TheOtherKev from Pixabay

Here’s what we know so far, according to the release notes.

Markdown can be used to create Text, whether that be through LocalizedStringKey or a String literal. You can create a Text View with an AttributedString, which I admit is a structure I don’t use very often. There are performance…


UPDATE: the problem has now been fixed, although the developers aren’t sure if the problem will surface again.

Image by Nattanan Kanchanaprat from Pixabay

Polkadot is a Nominated Proof-of-Stake (NPoS) network that has been up and running since May 26th 2020. Users vote to determine which validators do a good job, and in return they get…


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A metal coin with the Bitcoin logo standing on its edge in the middle of a chess board
Image by WorldSpectrum from Pixabay

Binance is the world’s largest cryptocurrency exchange, and the last 6 months have been the most profitable of its entire history.

The reason for this recent success is the launch of two blockchains. The first is Binance Chain, a closed source blockchain based on Tendermint that centres around trading BEP2…


a smartphone showing the Dogecoin price on its screen
Photo by Clay Banks on Unsplash

The cryptocurrency Dogecoin has had an incredible run this week, fuelled only by hype and celebrity endorsements. Unlike GameStop, where arguments of the company being undervalued can be made, Dogecoin really doesn’t offer any new utility. Maybe that doesn’t matter, but we’re probably going to find out soon enough. …

Rob Sturgeon

An iOS developer who writes about gadgets, startups and cryptocurrencies. Swift programming tutorials and SwiftUI documentation are here too. robsturgeon.com

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