How to run a code before or after a value changes — For the sake of convenience, property observers are built so that developers doesn’t need to write a code repeatedly each time a value of a property (or a variable) changes. There are basically 2 kinds of property observers: willSet — executes a code right before the property changes. didSet —…

Using inheritance allows you to inherit the properties and methods from other class. It is meant to avoid writing the same code when dealing with multiple classes that has similar properties or methods. But for whatever your reason is: whether it’s for the sake of security or type safety. You…

Object-oriented programming (OOP) is an object based concept programming paradigm. The way OOP works is that an object is created, then it describes the thing and what it can do. In Swift, object is defined by using class. …

This article is part of my Swift Programming Tutorial series. Structs, shorthand for structures uses properties and methods in order to deal with more complex customization of data types. Properties are variables which works the same way of storing values. …

This article is part of my Swift Programming Tutorial series. The primary goal of declaring a data type is to avoid unnecessary related errors in your program by making you code clean and organized. Swift has 6 basic data types: string, character, integer, float, double, and bool. This data types…

This article is part of my Swift Programming Tutorial series. A function is a reusable code containing set of instructions that performs specific outcome. The primary goal of using a function is to avoid writing the same block of code with the same purpose multiple times. …

There will be situations that you need to repeatedly execute some actions in your code. The initial instinct is to copy and paste the code multiple times. Although it works most of the time, it’s not the best practice. Especially if the way the action needs to be repeated varies…

This article is part of my Swift Programming Tutorial series. Conditional in programming handles decision and performs specific actions, if the specified conditions are met. The following are the forms of conditional in Swift programming: if statement if … else statement if … else if … else statement switch statement …

Swift programming language offers three main collection types for storing values: Arrays, Dictionaries, and Sets. This article is part of my Swift Programming Tutorial series. Swift Array An array is a data structure containing ordered collection of values. In other words, array is like a variable that holds multiple values. …

This article is part of my Swift Programming Tutorial series. One of Swift’s core strength is it encourages programmers to write clean code. Optionals is one of those ways of writing clean code by taking care of possible nil values. …

This article is part of my Swift Programming Tutorial series. What is String Interpolation If you’re not familiar with string interpolation, the topic may sound florid. But don’t worry, it’s not as complicated as you think it is. String interpolation is just the process of inserting variables or constants inside the string. …

This article is part of my Swift Programming Tutorial series. Operators are single or multiple symbols that can perform specific actions such as mathematical, logical, or relational operations. Below are the basic swift operators: Assignment Arithmetic Comparison Range Logical Assignment Operators An assignment operator assign values from left operand to its right…

Important but often neglected — What is comment in computer programming Comment in computer programming are blocks of code that are ignored by interpreters and compilers. It is basically used as programmer’s readable explanation in the source code of a computer program. This article is part of my Swift Programming Tutorial series. Why using comments in code important For documentation purpose. This will easily let other programmers…

This article is part of my Swift Programming Tutorial series. What is a variable Variables are used to store data. The stored data can be referenced or manipulated in a code. In other words, you can think of variables as containers that hold data. How to declare variables in Swift You can easily assign variables by declaring it using var…

Open source programming language from Apple Inc. — I decided to learn programming using Swift back when I was starting to venture on iOS app development. From there, I never stop making apps during my free time. My first impression is that I’m simply amazed by the way syntax encourages you to write clean and consistent code. It…