Swift, by default, does not expose pointers and other unsafe accessors, unlike Objective-C, which uses pointers pervasively to refer to object instances. Another difference from Objective-C is that the use of a Smalltalk-like syntax for making method calls has been replaced with a dot-notation style and namespace system.
This style is more similar to programmers that use other common object-oriented languages such as Java or C#.
Apple recently added option types as a new feature for Swift, this allows references or values to operate in a manner similar to the common pattern in C.
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