For every new language I learn, there's a task I eventually want for various purposes, and that's to use whatever reflection system that is available to traverse data structures in memory, and at the very least, dump a log of those structures to a certain depth.

C# took about 2h to do this acceptably. Javascript took 4h or so and I'm still not happy with it. Too many warts and odd ways of accessing arrays etc...

Lua took 30 minutes and it just worked perfectly. There was nothing left to do. it's just so simple.

I love that about it.