A type that can be initialized with a floating-point literal.

    protocol ExpressibleByFloatLiteral

    The standard library floating-point types—Float, Double, and Float80 where available—all conform to the ExpressibleByFloatLiteral protocol. You can initialize a variable or constant of any of these types by assigning a floating-point literal.

    // Type inferred as 'Double'
    let threshold = 6.0
    // An array of 'Double'
    let measurements = [2.2, 4.1, 3.65, 4.2, 9.1]

    Conforming to ExpressibleByFloatLiteral

    To add ExpressibleByFloatLiteral conformance to your custom type, implement the required initializer.


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