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Re:Ask HN: How do I learn C properly? by stiray on Sunday March 08, 2020 @04:05PM (#22520228)
This was a pure satisfaction when I have first seen it :)

https://en.wikipedia.org/wiki/Duff%27s_device

Re:Ask HN: How do I learn C properly? by saagarjha on Sunday March 08, 2020 @08:22PM (#22521759)
(Please don't write code like this anymore)
Re:Ask HN: How do I learn C properly? by stiray on Monday March 09, 2020 @03:58AM (#22523747)
Sure, duff device is obsolete due to cpu zero overhead looping but it is still nice to see, mind boggling piece of code. :)
Re:Ask HN: How do I learn C properly? by mrr54 on Monday March 09, 2020 @10:04PM (#22532090)
(Please do write code like this anymore.)