Exception

open class Exception : Error, CustomStringConvertible

An error that can be thrown. Encapsulates the type of error, the description, and any additional metadata.

  • The error that caused the exception.

    Declaration

    Swift

    public let error: Error

  • A description of the exception, or nil if none exists.

    Declaration

    Swift

    public let message: String?

  • The call stack at the time the exception was thrown.

    Declaration

    Swift

    public let stackTrace: [String]

  • Declaration

    Swift

    public var description: String { get }

  • Initializes an Exception instance.

    Declaration

    Swift

    public init(error:Error, message:String?, stackTrace:[String]? = nil)

    Parameters

    error

    The error causing the exception.
    message

    A human-readable message explaining the error.
    stackTrace

    The stack trace at the time the exception was thrown. Defaults to Thread.callStackSymbols.

  • The components of the description of this exception. Subclasses should override this method to return custom information in the description. Subclasses should prepend the superclass’ implementation to their return value.

    Declaration

    Swift

    open func descriptionComponents() -> [String]