Why is implicit `[weak self]` not the norm?

[eventomer (Tomer Even)]

Special syntax for blocks who capture all variables as weak

Introduction Introducing a special syntax for blocks who capture all variables as weak. For example: publisher.sink {? self.update(button) } Will be equivalent to publisher.sink { [weak self, weak button] in guard let self = self else { return } guard let button = button else { return } self.update(button) } Motivation Many of the UI related use of blocks requires the developer to add lots of boilerplate code to allow weak capturing of self and other variables used in the scop…