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Jan 29, 2024
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Mention generics in "optimizing dependencies" #366

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6 changes: 6 additions & 0 deletions src/unsorted/speed-vs-size.md
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Expand Up @@ -42,6 +42,12 @@ override the optimization level of dependencies. You can use that feature to
optimize all dependencies for size while keeping the top crate unoptimized and
debugger friendly.

Beware that generic code can sometimes be optimized alongside the crate where it
is instantiated, rather than the crate where it is defined. If you create an
instance of a generic struct in your application and find that it pulls in code
with a large footprint, it may be that increasing the optimisation level of the
relevant dependencies has no effect.

[`profile-overrides`]: https://doc.rust-lang.org/cargo/reference/profiles.html#overrides

Here's an example:
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