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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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16
Task/Add-a-variable-to-a-class-instance-at-runtime/Swift/add-a-variable-to-a-class-instance-at-runtime.swift Normal file
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import Foundation
let fooKey = UnsafeMutablePointer<UInt8>.alloc(1)
class MyClass { }
let e = MyClass()
// set
objc_setAssociatedObject(e, fooKey, 1, .OBJC_ASSOCIATION_RETAIN)
// get
if let associatedObject = objc_getAssociatedObject(e, fooKey) {
print("associated object: \(associatedObject)")
} else {
print("no associated object")
}