iOS Programming Tutorials

Lazy stored properties are used for a property whose initial values are not calculated until the first time it is used. A lazy stored property can be declared by writing the lazy modifier before its declaration. Lazy properties are useful when the initial value for a property is reliant on outside factors whose values are … Read more

In Swift programming language, Optional Chaining is a process of querying and calling properties. You can chain multiple queries together, but if any link in the chain is nil then, the entire chain fails. Optional chaining in Swift is a mechanism that allows you to access properties, methods, and subscripts of an optional value, but … Read more

Swift language consists of following Control transfer statements: Continue Break Fallthrough Return In Swift, there are several control transfer statements that you can use to control the flow of your code. These include: return: Used to return a value from a function, method, or closure. break: Terminates the execution of a loop, switch statement, or … Read more

In Swift programming language, single-line comments are started with double slashes (//). For example: // This is a single line comment. Multi-line comment: Multiline comments are started with a forward-slash followed by an asterisk (/*) and end with an asterisk followed by a forward-slash (*/). For example: /* this is multi Line comment*/ To write … Read more

Numbers with decimal values or fractional components are called floating numbers. For example: 1.34 is a floating point number. Floating point types can represent a wider range of values than integer types. There are two signed floating point number: Double: It represents a 64 bit floating point number. It is used when floating point values … Read more