I get a runtime error, which seems to be due to my wrong implementation of GCD combined with my custom NSManagedObjects.
Nested in GCD call In, I use custom NSManagedObjects (it seems) to hav
Tag: GCD
SWIFT 3 GCD API Changed DISPATCH_ONCE
After the changes in language version 3, what is the new syntax for dispatch_once in Swift? The old version is as follows.
var token: dispatch_once_t = 0
func test() {
dispatch_once(&token)