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# incria
Incria is a library for incremental computation.
It lets you record what a calculation depends on and then only re-run that calculation once one of those dependencies has changed.
This is similar to the [query system used by the Rust compiler](https://rustc-dev-guide.rust-lang.org/query.html), but implemented using async.
By seperating the tracking of dependencies from the calculation logic, you can write clean code that re-runs only when it needs to, and can be parallelised with little extra work.
For more info, read the rustdoc or check the [examples]($ROOT/dir?ci=tip&name=examples).
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