End up with more coins than you started with, even if you don’t spend any of your cash or sell any of your coins

Image by S K from Pixabay

What is short selling?

What is cross margin?


According to the release notes, this is what’s coming up for Apple’s UI framework

Image by TheOtherKev from Pixabay


Scalability issues have added a roadblock to the adoption of the cross-chain platform

Image by Nattanan Kanchanaprat from Pixabay


Photo by Aaron Burden on Unsplash


Keep your coins firmly within your control by doing away with custodial exchanges entirely

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


The cryptocurrency coin may be a meme. So let’s have fun with it using CoinGecko API

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


The brushed metal effect and Aqua buttons that look like candy are back

An imitation of an old OS X Finder window with a brushed metal background and 3D buttons
An imitation of an old OS X Finder window with a brushed metal background and 3D buttons
Photo by the author.
  • A solid light grey colour
  • A…


A SwiftUI tutorial.

Steve Jobs quote “One of the design goals was when you saw it you wanted to lick it‘, with ‘No thanks’ and ‘Lick it’ buttons
Steve Jobs quote “One of the design goals was when you saw it you wanted to lick it‘, with ‘No thanks’ and ‘Lick it’ buttons
The dialog box you’ll be making from scratch


Securely save data for any Codable type in the encrypted database of your iOS and macOS apps

Keys on keychain
Keys on keychain
Photo by Uwe Baumann on Pixabay.
@AppStorage(“MyKey”) var savedValue


The ability to capture a 3D image of anything has unforeseen consequences

Image by PIRO4D from Pixabay

Face ID: a Security Upgrade But a Privacy Risk

Rob Sturgeon

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

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