Highlighted by Gamze Erdoğan
From What do mean @escaping and @nonescaping closures in Swift? by Pramod Kumar
… self.getSumOf(array: [16,756,442,6,23]) { [weak self](sum) in
print(sum)
//step 4, finishing the execution
… self.getSumOf(array: [16,756,442,6,23]) { [weak self](sum) in
print(sum)
//step 4, finishing the execution
}
}