Pointers in Swift

Updated 30 April 2021



A pointer is an object that stores a memory address. In Swift, there are 8 types of pointers. In Swift, pointers are known as because they support direct operations on memory and these operations are unsafe in nature that’s why a  prefix is used with Pointers in swift.

They can be categories into the following types:

Swift Unsafe Pointers

You use instances of the UnsafePointer type to access data of a specific type in memory. The type of data that a pointer can access is the pointer’s Pointee type. UnsafePointer provides no automated memory management or alignment guarantees. You are responsible for handling the life cycle of any memory you work with through unsafe pointers to avoid leaks or undefined behavior.

UnsafePointer<T> UnsafeMutablePointer<T>
UnsafeBufferPointer<T> UnsafeMutableBufferPointer<T>
UnsafeRawPointer UnsafeMutableRawBufferPointer
UnsafeRawBufferPointer UnsafeRawBufferPointer




It is used to accesses the instance referenced by this pointer.

When reading from the pointee property, the instance referenced by this pointer must already be initialized.

Thank you for reading this article. If you want to read more articles regarding iOS Development click here or if you want to know more about the pointers click here.

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