Is there any way to run loop at "compil-time"?

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How to excute code at compile time

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There are three variants of this:

  1. Any code inside the definition of a const or static is guaranteed to run at compile time, but it can only use const methods, and you can't e.g. read files or do web requests.
  2. Proc-macros can execute arbitrary code during compilation.
  3. A build script can also be used, which is also able to execute arbitrary code.
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In the above three methods which method is best for run the iteration loop at compile time?

4

The iteration loop?

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Means for example while loop

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What does it do? Just compute a value? Which type? Does it print stuff or write to a file?

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Just compute a value

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If you are able to put it in a static or const, then do that.

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