Misc

Handy tips and useful features in Swift.

The print() Function

You can pass multiple items to a single print() function by separating them with commas.

print("Ready", "Set", "Go")
// prints "Ready Set Go"

Separator

You can change the text inserted between items by using the separator parameter.

print("Apple", "Banana", "Cherry", separator: " & ")
// prints "Apple & Banana & Cherry"

Terminator

By default, print() adds a newline. You can change this behavior by using the terminator parameter.

print("Hello", terminator: " ")
print("World")
// prints "Hello World"

Comments

Type	Syntax	Use Case
Single-line	//	Brief notes.
Multi-line	/* ... */	Longer explanations.
Documentation	///	Xcode tooltips and Quick Help.

NOTE

Documentation comments (///) are highly recommended for public APIs and complex logic as they automatically integrate with the Xcode's documentation tools.

Result Type

This is a standard type used to handle success or failure in operations that might produce an error.

func checkStatus() -> Result<String, Error> {
    // return .success("OK") or .failure(MyError.someIssue)
}