Difference between block (Objective-C) and closure (Swift) in iOS

Question

In tutorials it\'s written that functionally both are same even closure is more easier then block and its avoided the complexity of block and memory management, I\'ve gone t

Answer 1

Excerpt From: Apple Inc. “Using Swift with Cocoa and Objective-C.” iBooks:

“Swift closures and Objective-C blocks are compatible, so you can pass Swift closures to Objective-C methods that expect blocks. Swift closures and functions have the same type, so you can even pass the name of a Swift function.

Closures have similar capture semantics as blocks but differ in one key way: Variables are mutable rather than copied. In other words, the behavior of __block in Objective-C is the default behavior for variables in Swift.”