Optional

public extension Optional

extension Optional: OptionalType

extension Optional:
    ExpressibleByStringLiteral,
    ExpressibleByExtendedGraphemeClusterLiteral,
    ExpressibleByUnicodeScalarLiteral
    where Wrapped: ExpressibleByStringLiteral

extension Optional: ExpressibleByIntegerLiteral where Wrapped: ExpressibleByIntegerLiteral

extension Optional: ExpressibleByBooleanLiteral where Wrapped: ExpressibleByBooleanLiteral

extension Optional: ExpressibleByFloatLiteral where Wrapped: ExpressibleByFloatLiteral

extension Optional: ExpressibleByArrayLiteral where Wrapped: ExpressibleByArrayLiteral

extension Optional: ExpressibleByDictionaryLiteral where Wrapped: ExpressibleByDictionaryLiteral, Wrapped.Key: Hashable


                    
                    
                    orFail(_:)

Returns unwrapped value, or fails.

Declaration

Swift

func orFail(_ message: String = "unwrapping nil") -> Wrapped

Parameters


                                message

Failure message

Return Value

Unwrapped value

Optionality checks

isNotNil
Undocumented
Declaration
Swift

public var isNotNil: Bool { get }

Available where `Wrapped`: `ExpressibleByStringLiteral`


                    
                    
                    StringLiteralType

Declaration

Swift

public typealias StringLiteralType = Wrapped.StringLiteralType


                    
                    
                    ExtendedGraphemeClusterLiteralType

Declaration

Swift

public typealias ExtendedGraphemeClusterLiteralType = Wrapped.ExtendedGraphemeClusterLiteralType


                    
                    
                    UnicodeScalarLiteralType

Declaration

Swift

public typealias UnicodeScalarLiteralType = Wrapped.UnicodeScalarLiteralType


                    
                    
                    init(stringLiteral:)

Declaration

Swift

public init(stringLiteral value: StringLiteralType)


                    
                    
                    init(extendedGraphemeClusterLiteral:)

Declaration

Swift

public init(extendedGraphemeClusterLiteral value: ExtendedGraphemeClusterLiteralType)


                    
                    
                    init(unicodeScalarLiteral:)

Declaration

Swift

public init(unicodeScalarLiteral value: UnicodeScalarLiteralType)

Available where `Wrapped`: `ExpressibleByIntegerLiteral`


                    
                    
                    IntegerLiteralType

Declaration

Swift

public typealias IntegerLiteralType = Wrapped.IntegerLiteralType


                    
                    
                    init(integerLiteral:)

Declaration

Swift

public init(integerLiteral value: IntegerLiteralType)

Available where `Wrapped`: `ExpressibleByBooleanLiteral`


                    
                    
                    BooleanLiteralType

Declaration

Swift

public typealias BooleanLiteralType = Wrapped.BooleanLiteralType


                    
                    
                    init(booleanLiteral:)

Declaration

Swift

public init(booleanLiteral value: BooleanLiteralType)

Available where `Wrapped`: `ExpressibleByFloatLiteral`


                    
                    
                    FloatLiteralType

Declaration

Swift

public typealias FloatLiteralType = Wrapped.FloatLiteralType


                    
                    
                    init(floatLiteral:)

Declaration

Swift

public init(floatLiteral value: FloatLiteralType)

Available where `Wrapped`: `ExpressibleByArrayLiteral`


                    
                    
                    ArrayLiteralElement

Declaration

Swift

public typealias ArrayLiteralElement = Wrapped.ArrayLiteralElement


                    
                    
                    init(arrayLiteral:)

Declaration

Swift

public init(arrayLiteral elements: ArrayLiteralElement...)

Available where `Wrapped`: `ExpressibleByDictionaryLiteral`, `Wrapped.Key`: `Hashable`

Key
Declaration
Swift

public typealias Key = Wrapped.Key
Value
Declaration
Swift

public typealias Value = Wrapped.Value


                    
                    
                    init(dictionaryLiteral:)

Declaration

Swift

public init(dictionaryLiteral elements: (Key, Value)...)

Optional

Declaration

Parameters

Return Value

Optionality checks

Declaration

Available where Wrapped: ExpressibleByStringLiteral

Declaration

Declaration

Declaration

Declaration

Declaration

Declaration

Available where Wrapped: ExpressibleByIntegerLiteral

Declaration

Declaration

Available where Wrapped: ExpressibleByBooleanLiteral

Declaration

Declaration

Available where Wrapped: ExpressibleByFloatLiteral

Declaration

Declaration

Available where Wrapped: ExpressibleByArrayLiteral

Declaration

Declaration

Available where Wrapped: ExpressibleByDictionaryLiteral, Wrapped.Key: Hashable

Declaration

Declaration

Declaration

Available where `Wrapped`: `ExpressibleByStringLiteral`

Available where `Wrapped`: `ExpressibleByIntegerLiteral`

Available where `Wrapped`: `ExpressibleByBooleanLiteral`

Available where `Wrapped`: `ExpressibleByFloatLiteral`

Available where `Wrapped`: `ExpressibleByArrayLiteral`

Available where `Wrapped`: `ExpressibleByDictionaryLiteral`, `Wrapped.Key`: `Hashable`