Constants in Swift
Keep that value fixed!
Constants are treated in different ways by programming languages. Swift is no different!
Difficulty: Beginner | Easy | Normal | Challenging
Prerequisites:
- Be able to produce a “Hello, World!” iOS application (guide HERE)
- Naming conventions are touched upon(guide HERE)
Terminology
Character: A character, usually associated with a letter of the alphabet
Constant: A value that can not be amended during the normal execution of a program
Compiler: A program that converts instructions into a machine-code or lower-level form so that they can be read and executed by a computer
lowerCamelCase: A naming convention where the name is formed of multiple words joined as a single word, but the first letter of each word is capitalized. The first letter is in lower case.
Underscore: The _ character, in Swift this generally indicates that a piece of information is missing
URL: Uniform Resource Locator. An address of a web page or resource
Constants
Constants can actually make your code safe, because you are declaring to the compiler:
