Best of 2019

The blog posts Hacker News loved most in 2019. 4,838 posts.

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Compilers for Free

I’m fascinated by programming, and by metaprogramming in particular. When Ruby programmers talk about metaprogramming they usually mean programs that write programs , because Ruby has various features — like BasicObject#instance_eval , Module#define_method and BasicObject#method_missing — which make it possible to…