Heapless release 091 #200
Heapless release 091 #200
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| # Heapless `0.9.1` released | ||
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| Almost 2 years after the last release, the [heapless](https://github.com/rust-embedded/heapless) crate has a new release. The first attempt at a `0.9.0` release was yanked due to including more breaking changes than intended. This has been fixed, and `0.9.1` has been released today. |
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Sorry for the nitpick but could we please keep all the lines under 100 chars and break lines on the word boundary based on this limit rather than for starting a new sentence (in the same paragraph)? 🙏
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Existing entries don't do that. My editor (helix) handles word wrapping very well, I don't really want to do this manually and would rather focus on the content than the formatting. Markdown and Zola are here to handle the formatting.
content/2025-08-20-heapless-091.md
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| # The `LenType` optimization | ||
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| Most often, buffers in embedded applications will not contain a huge number of items. | ||
| Until `0.9.1` the capacity of the `heapless` data structures were almost always stored as a `usize`, which can often encode much more values than necessary. |
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I'm not sure. Capacities plural seems weird. I read it as the capacity of each of heapless data structures, even without the "each". But I'm not a native speaker either.
content/2025-08-20-heapless-091.md
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| If you are seriously constrained by memory, a `Vec<T, 28>` (equivalent to `Vec<T, 28, usize>`) can become a `Vec<T, 28, u8>`, saving up to 7 bytes per `Vec`. This is not much, but in very small microcontrollers, it can make the difference between a program that uses all the memory available and one that just fits. | ||
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| This release was made possible by [@sgued] and [@zeenix] joining the embedded working group as part of the libs team to help maintain `heapless`. |
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Thanks to attributing. 🙏 This should probably either go under another heading (e.g "Contributors") or separated from the previous paragraph through a ruler (---).
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Made it its own section and credited other contributors too.
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Can we merge this this evening? It'd be nice to have it in tomorrow's this week in Rust |
@zeenix tell me if you would add anything else.
Once OK I'll release heapless and I'll add this to This Week In Rust.
I've only tested it with an up to date version of Zola so #199 should probably be merged first.