Copy instance variables, methods or properties from specific class with Objective-C runtime API via Swift.

CopyInstanceVariables.swift

#import ObjectiveC

var count: UInt32 = 0
if let ivars = class_copyIvarList(NSObject.self, &count) {
	for i in 0..<Int(count) {
		let ivar = ivars[i]
		if let name = ivar_getName(ivar) {
			print("ivar: ", String(describing: String(utf8String: name)))
		}
	}
}

CopyMethods.swift

#import ObjectiveC

var count: UInt32 = 0
if let methods = class_copyMethodList(NSObject.self, &count) {
	for i in 0..<Int(count) {
		let method = methods[i]
		let sel = method_getName(method)
		let name = sel_getName(sel)
		print("method: ", String(describing: String(utf8String: name)))
	}
}

CopyProperties.swift

#import ObjectiveC

var count: UInt32 = 0
if let props = class_copyPropertyList(NSObject.self, & count) {
	for i in 0..<Int(count) {
		let prop = props[i]
		let name = property_getName(prop)
		print("property: ", String(describing: String(utf8String: name)))
	}
}