![]() for count in 1.These frameworks and the whole idea of building mobile apps with JavaScript never appealed to me, though. This chapter is dedicated to for loops, and the next chapter is all about while loops. So much so that it would be infeasible to manually process it. Here is a verbose if-else mess: let num = 3Īnd here is the version that uses the switch statement: let num = 3Īnother really important concept in programming is iteration.Ī program usually has to process loads of data. The switch statement can be used to make your code look cleaner when your if-else statements are really long. If the condition is not true, do something else.Ī common alternative to the if-else statements is a switch statement.If a condition (logical expression) is true, do something.In Swift, you can use if-else statements to accomplish this. If a condition is true, the Logical NOT makes it false.Īfter learning about logical operators, it is time to build a program that can make decisions based on conditions. Reverses the logical state of the operand. If either one of the two operands is true, the condition is true. If and only if both the operands are true, the condition is true. In Swift, there are three logical operators: Operator Logical operators are used to connecting logical expressions, that is, expressions that are either true or false. Logical operators are the first step toward writing programs that can make decisions. OperatorĬhecks if two values are equal to one another.Ĭhecks if two values are not equal to one another.Ĭhecks if the left-hand side is greater than the value on the right-hand side.Ĭhecks if the left-hand side is greater than or equal to the value on the right-hand side. Here is a table that summarizes the chapter really well. Var fraction = 10.0 / 3.0 Chapter 6: Comparison OperatorsĪfter learning about the math operators, it is time to learn about comparison operators. These operators are something you are most likely familiar with from elementary school. Var isBoring: Bool = false Chapter 5: Math OperatorsĪfter learning about data types it is time to take a look at the basic math operators in Swift. Bool for truth values (boolean values). ![]() let name = "Alice"Įvery single piece of data you’ll ever encounter represents some data type. To create a variable or constant, use the keywords var and let respectively. In Swift, you can store values such as numbers or text into variables and constants. We start off with the basics, that is, how to store values in your program. This is the first programming chapter in this course. You are also going to hear an alternative way to write Swift code if you do not have access to a Mac or Xcode. In this chapter, we are going to install and set up the Xcode developer tools. To start learning Swift, you need a Mac and an app called Xcode. To build apps with Swift, you need a code editor where you write the programs. However, you need to carefully repeat the examples to understand how the code truly works and to get some hands-on experience. ![]() ![]() If you only read this course through, it would probably take less than 3 hours to complete. To give some perspective, I’d say about 95% of the time you should write code, and only 5% of the time watch tutorials or read theory. To put it short, you have to be prepared to spend hundreds of hours learning Swift programming language. Swift is the main language to use when building iOS apps. This helps you set some expectations for the course and for becoming an iOS developer in general. Chapter 1: Introduction to iOS Developmentīefore jumping into the course and coding, it is important to understand what is iOS development and programming. This section will give you an idea of what the course is all about. Here is a quick chapter-by-chapter overview of the course.
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