🔮Mirror

Reflection in Swift allows us to use the Mirror API to inspect and manipulate arbitrary values at runtime. 👉 SwiftLee

💾 程式：paiza.io

HasMirrors - use Mirror to inspect types.
CaseReflectable - inspect enum case.
NonNominalTypeWrapper - help inspect non-nominal types.
enum case pattern - use Mirror to pattern match an enum case.

// --------------------
//     Type aliases
// --------------------

// An element of the reflected instance’s structure
// label: nil | stored property name | enum case name.
typealias Mirror.Child = (label: String?, value: Any)

// The type used to represent substructure.
typealias Mirror.Children = AnyCollection<Mirror.Child>

// -------------
//     Types
// -------------

// Playgrounds and debugger will use this as suggestion to show subject.
enum Mirror.DisplayStyle {
    case `class`
    case collection
    case dictionary
    case `enum`
    case optional
    case set
    case `struct`
    case tuple
}

關鍵字：meta programming, reflection

PreviousDebugging NextMirror.handleChildren()

Last updated 4 years ago