C# IEnumerable & IEnumerator

IEnumerable and IEnumerator play an integral part in your day-to-day development, whether you know about them or not! They can also yield strange results if you don't know how they work.

In this video I'll show you what they do, how they work and how you can create your own enumerable classes.

This video is sponsored by Jet brains. Check out their amazing software suite here: https://jb.gg/vp1aem



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00:00 - Intro
00:20 - First example (Heroes of Olympus)
4:00 - Second example (Query behaviour / Random)
6:16 - ToList() tradeoffs - pros & cons
8:03 - ToList() example
9:24 - Example benchmark
11:33 - IDE love
13:30 - One at a time
16:45 - Linq benefits on IEnumerables
18:00 - Custom IEnumerator
21:41 - Generic IEnumerator for Linq queries
23:56 - Summary