Allow values of your type to be expressed using different kinds of literals.
Initialization with Literals
Topics
Collection Literals
protocol ExpressibleByArrayLiteral A type that can be initialized using an array literal.
protocol ExpressibleByDictionaryLiteral A type that can be initialized using a dictionary literal.
Value Literals
protocol ExpressibleByIntegerLiteral A type that can be initialized with an integer literal.
protocol ExpressibleByFloatLiteral A type that can be initialized with a floating-point literal.
protocol ExpressibleByBooleanLiteral A type that can be initialized with the Boolean literals true and false.
protocol ExpressibleByNilLiteral A type that can be initialized using the nil literal, nil.
String Literals
protocol ExpressibleByStringLiteral A type that can be initialized with a string literal.
protocol ExpressibleByExtendedGraphemeClusterLiteral A type that can be initialized with a string literal containing a single extended grapheme cluster.
protocol ExpressibleByUnicodeScalarLiteral A type that can be initialized with a string literal containing a single Unicode scalar value.
protocol ExpressibleByStringInterpolation A type that can be initialized by string interpolation with a string literal that includes expressions.
protocol StringInterpolationProtocol Represents the contents of a string literal with interpolations while it’s being built up.
struct DefaultStringInterpolation Represents a string literal with interpolations while it is being built up.
Default Types for Literals
Default Literal Types
Type aliases representing the concrete type that a literal takes when no other type information is provided.
See Also
Tools for Your Types
Basic Behaviors
Use your custom types in operations that depend on testing for equality or order and as members of sets and dictionaries.
Encoding, Decoding, and Serialization
Serialize and deserialize instances of your types with implicit or customized encoding.