Compile Time Execution

[5nyper]

Any plans on implementing this in Rust? nimlang has this cool feature and Im wondering if Rust will have it soon.

[DiamondLovesYou]

You can already do it with a macro implemented in a compiler plugin.

[5nyper]

Thats not as General as a full CTFE though.

[codyps]

And using compiler plugins means we need to split our code that runs at different times into different files, which doesn't help much when we just want to initialize some datastructures that the code is making use of.

(Not to mention that we don't actualy have a documented/stable plugin interface)

[5nyper]

Isnt it possible to do it the way Nim does it? http://hookrace.net/blog/what-is-special-about-nim/#run-regular-code-at-compile-time

[reem]

This has been noted by the community many times as a desired post-1.0 feature.

[SimonSapin]

I think this can be closed in favor of #911

[petrochenkov]

MIRI is merged into rustc and is will be used for all const evaluation soon (rust-lang/rust#46882), I don't think there's value in keeping this issue open.