this post was submitted on 08 Jul 2023
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What's the Rust way of storing fetched data from runtime for later use in the program? (programming.dev)
submitted 1 year ago by [email protected] to c/[email protected]
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My program is small enough that in TS/JS I'd normally just store the data in some global variable to be access from whatever elsewhere in the app. But with Rust from what I can tell this doesn't seem to be a common practice. How should i handle this?

More specifically, I need to:

  1. program start, fetch data from my db (DONE)
  2. store this data somehow somewhere
  3. access said data (for read only in this use case)

Thanks for any insights here!

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[โ€“] [email protected] 8 points 1 year ago (1 children)

From your description it sounds like you want OnceCell which is a relatively new feature; previously you'd use lazy_static

[โ€“] [email protected] 3 points 1 year ago

Yeah I tried out lazy_static, but the compiler was strongly urging me not to use it since it's being deprecated. Thanks, I didn't know about OneCell.