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ExpressibleByNilLiteral

A type that can be initialized using the nil literal, nil.

Declaration

protocol ExpressibleByNilLiteral : ~Copyable, ~Escapable

Overview

nil has a specific meaning in Swift—the absence of a value. Only the Optional type conforms to ExpressibleByNilLiteral. ExpressibleByNilLiteral conformance for types that use nil for other purposes is discouraged.

Topics

Initializers

See Also

Value Literals