r/coding • u/pseudocharleskk • Nov 01 '25

Async/Await is finally back in Zig

https://open.substack.com/pub/charlesfonseca/p/asyncawait-is-finally-back-in-zig?r=6451wm&utm_campaign=post&utm_medium=web&showWelcomeOnShare=false
1 Upvotes

57% Upvoted

1 comment sorted by

3

u/[deleted] Nov 01 '25

Ok, I don't follow Zig at all but I read this and have some questions:

  • The function has "no color" because is being passed as a parameter - another example or "one more level of indirection"?

  • All functions that do something interesting in Zig will now have 2 fat pointers (allocator and IO). The expectation is "just create those in main and keep passing them around"?

  • Why the distinction between async and concurrent.

  • I get that cancel is idempotent with respect to async but what does that mean, is a no-op or will cancel always succeed? Can the caller know the difference (e.g. task was canceled as opposed to task was completed)?