While Anki is great, I don’t see much value in using it for programming. I personally use it for equations and find it works very well. While remembering an equation is super useful, remembering APIs and stuff just isn’t. Intellisense solves the problem and even if you don’t have access to it (Python cough cough), it’s not that big a deal to just look up the documentation. Looking up the “documentation” (hah!) for equations is actually genuinely time consuming.
> it’s not that big a deal to just look up the documentation.
Imagine you don't know the language and are trying review a few thousand lines of code.
Well, you wouldn't be doing that if you don't know the language, right? But that's just it; maybe spaced repetition can be a good way to get there, especially if you're already an experienced programmer.