Author Archive for Andrei Puni

Combining Colors

Ever wanted that color but a bit darker? Or to combine one color with another? That’s what we’ll learn to do now What is color to a computer? The color of a pixel is described by the amount of red, green and blue light it emits. In case you didn’t already know there are thousands of tiny colored lights/LEDs on…

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The Exercise Platform is available online!

The exercise platform behind our Swift Programming from Scratch macOS training app is now available online.       +     Subscribe now and get full access to our online exercise platform +  the PDF and ePub versions of the book! Swift Programming from Scratch  Each chapter has two sections: the first one has a bit of theory and the second has…

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We started testing our Swift Sandbox!

After a few months of work we can proudly present our Swift Sandbox that let’s you run swift code directly in the browser:     Training App Our Swift Programming from Scratch  training app is accessible online because of this! The first two chapters (Chapter 1: First Steps, Chapter 2: Conditionals) have the training app enabled for all exercises (available for free). Embedding the Swift Sandbox…

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π day: rainbow hex grid

Today is π day so I decided to share a bit of my love for math. We are going to briefly revisit the sine and cosine function do some magic and then make an awesome rainbow hex grid. Sine and Cosine are so round Everybody knows about π because of circles. The circumference of a circle of radius R is…

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Adding lots of functions

I recently started working on a medical research project for hemophilia. I dreamed about working on projects that have a big impact but never thought that the opportunity will come so fast! Thank you Apple for releasing ReseachKit! A bit about Hemophilia Hemophilia is a group of hereditary genetic disorders that impairs the body’s ability to control blood clotting. There…

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Black Friday discounts and more

      iOS Spellbook The purpose of this book is to help you get to 80% of the way to Expert iOS Developer while doing only 20% of the work. This book will not teach you all you need to know about iOS because no book can do that. Learning to be a great iOS developer takes years of practice…

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Swift 2.0: Challenge Accepted!

The update is published – the price is $25 until 4 Oct then back to $40  Swift 2.0 will be out of beta soon. We are currently working on the update for the Swift Programming from Scratch book and app. We still have issues with a couple exercises in the platform – we like challenges so we are dropping the price by $2…

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Auto Layout 101

A few years ago you might have gotten away without Auto Layout. Now there are a couple of different iPhone sizes and on iPad you can run two apps at the same time. Auto Layout is the way to go! This tutorial will cover the basics of Auto Layout so that you can start using it in your apps. We…

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UIView Fundamentals

Every time you look at your iPhone you see UIViews. UIViews everywhere! In this article we are going to see what a UIView can do and how you can use it to make your apps. Views 101 The UIView class defines a rectangular area on the screen on which it shows content. It handles the rendering of any content in…

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Happy Birthday, Swift!

It’s been an awesome year since Apple announced Swift! Thousands of developers have rushed to write code in swift – we can see over 41.000 public repositories on github and 36.000 questions on stackoverflow. The number of Swift repositories is growing day by day: Number of github repositories: Number of new github repositories that appear each week. Redmonk predicted that…

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