Swift – Keywords

Swift Keywords

Welcome to Swift Tutorial. In this tutorial, we will learn about the reserved keywords in Swift programming.

Swift keywords are the words reserved for a purpose.

They cannot be used for variable names constants or any other identifiers.

There are four types of keywords in Swift based on the location of their usage in a swift program.

• Keywords in Declarations
• Keywords in Statements
• Keywords in Expressions and Types
• Keywords in Specific Contexts

Swift Keywords used in Declarations

Class	deinit	enum	extension
func	import	Init	internal
Let	operator	private	protocol
public	static	struct	subscript
typealias	var

Swift Keywords used in Statements

break	case	continue	default
do	else	fallthrough	for
if	in	return	switch
where	while

Swift Keywords used in Expressions and Types

as	dynamicType	false	is
nil	self	Self	super
true	_COLUMN_	_FILE_	_FUNCTION_
_LINE_

Swift Keywords used in Specific Contexts

associativity	convenience	dynamic	didSet
final	get	infix	inout
lazy	left	mutating	none
nonmutating	optional	override	postfix
precedence	prefix	Protocol	required
right	set	Type	unowned
weak	willSet

We shall go through all these keywords in this series of Swift Tutorial and explain in detail with examples when necessary.