Virtually Instructional

on YouTube ↗30m

" summary

Compares BEAM to Parrot and JVM by showing real disassembly: compiling Elixir to a .beam, peeking with a hex viewer, using df/erts disassemble and javap, and stepping a running system to watch instructions morph into superinstructions. Notes concrete counts — 158 instructions in BEAM (maps added in OTP 17) and a single Elixir function expanding to 31 instructions — and demonstrates register types, message-receive code, tail-call elimination and that optimizations and BIFs actually happen.

AI-written summary · about

" chapters (10)

1. 0:00Introduction
2. 1:24Beam Files
3. 5:58Register
4. 10:27Stack vs Register
5. 11:38Threading
6. 13:29Disassembled function
7. 18:27Receiving messages
8. 23:17Other instructions
9. 25:14Final example
10. 27:15Conclusion

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