I like the part where you explain difficult content in an easy-to-understand way!

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Concurrency Programming - Covers all the concepts of synchronization and asynchrony required in iOS programming, as well as GCD and Operation that extend it.

allen

Alan iOS Concurrency - Understanding Dispatch Queues and Operation Queues

입문

초급

중급이상

스위프트

Swift

concurrent

GCD - 1. Before GCD/Operation

Lecture materials

GCD - 2. Types and characteristics of dispatch queue (GCD)

GCD - 3. Things to be careful of when using dispatch queue (GCD)

GCD - 4. Dispatch Group

GCD - 5. (Reference) GCD Project Overview

GCD - 6. (Advanced) Problems related to concurrency

GCD - 7. (Advanced) Implementation and method of thread-safe code

GCD - 8. (Advanced) Issues related to Lazy var

GCD-related summary

Operation - 1. Before the operation

Operation - 2.Operation / Operation Queue

Operation - 3.AsyncOperation (Asynchronous Operation)

Operation - 4. Main functions of the operation queue

Operation - 5. Review the Operation Project

Summary - Comparison and Use of GCD/Operation