Static dispatch vs Dynamic dispatch in Swift || iOS interview Questions

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Chapters:
0:00 Video Intro
0:15 Overview of Method Dispatch
1:20 Static Dispatch
3:03 Dynamic Dispatch
6:40 Identify Dispatch Type
7:14 Performance comparison
10:29 Tricky Challenge
14:00 Conclusion

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[saruqara]

A few things you forgot to mention:

1. There are two kinds of table dispatch: virtual table (v-table), and witness table.
2. Why can't Swift just do everything in static (direct) dispatch? - Because you have to pay for features like: inheritance and polymorphism.
3. Value type like 'struct' can conform to protocol and now can be executed with witness table - means at runtime.

The easiest way to understand it is to know what each of them brings to you. So the idea is the smarter the type, the more you have to pay.

[jitendrakumarpradhan]

00:03 Method dispatch determines which operation should be executed at compile time or runtime
03:45 Table dispatch assigns function pointers in a table.
05:25 Dynamic dispatch involves runtime method invocation based on class hierarchy.
09:00 Using static dispatch is faster than dynamic dispatch.
12:58 Static dispatch is faster than dynamic dispatch

[kanerodricks]

The best video on this subject! Really really great man!!! Subscribed!

[dostonbek.rustamov]

Wow! Best Explanation of dispatch differences

[rahuljamba]

Very good, topics, I appreciate your work.