[jimws]

This tutorial uses Pascal as the implementation language. Is there a similar tutorial done in a language that is mainstream today? Like Python? Go? Rust?

[mhh__]

Modern Compiler implementation in [x] follows a similar structure (in much more depth) and can be consumed in Java, C or - the correct choice - ML.

[Solarsail]

Well, the tutorial itself has received translations from m68k Turbo Pascal to x86 C : https://github.com/lotabout/Let-s-build-a-compiler