A type that can be initialized with a floating-point literal.
SDK
- Xcode 8.0+
Framework
- Swift Standard Library
Declaration
Overview
The standard library floating-point types—Float
, Double
, and Float80
where available—all conform to the Expressible
protocol. You can initialize a variable or constant of any of these types by assigning a floating-point literal.
Conforming to ExpressibleByFloatLiteral
To add Expressible
conformance to your custom type, implement the required initializer.