Swift’s Named Parameters

You can have internal and external names. What next?

Naming conventions are extremely important in programming. Further to this, when you use functions you can have internal and external names which should make a programmer’s life easier. That is, if it is possible to understand them — although this short guide should help you out!

Photo by Luca Bravo on Unsplash

Prerequisites:

• Be able to produce a “Hello, World!” iOS application (guide HERE)
• Some basic knowledge of functions (guide HERE)
• Completion handlers are mentioned later on, if you are unfamiliar with these you can skip this section or read the guide! (guide HERE)

Terminology

Argument labels (External names): The name of a variable that is used externally when a function is called

Function: A group of statements that together can perform a function

Function signature: The header for a function, specifying the return type and parameters for a function

Parameter names (Local names): The name of a variable that is used internally within a function

Parameters: A type of variable that is used to pass information into functions

Using local function…