mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-13 05:20:38 +00:00
47 lines
2.8 KiB
Markdown
47 lines
2.8 KiB
Markdown
|
---
|
||
|
|
layout: single
|
||
|
|
title: "Luau Recap: April 2021"
|
||
|
|
---
|
||
|
|
|
||
|
|
Luau is our new language that you can read more about at [https://roblox.github.io/luau](https://roblox.github.io/luau). Another busy month in Luau with many performance improvements.
|
||
|
|
|
||
|
|
[Cross-posted to the [Roblox Developer Forum](https://devforum.roblox.com/t/luau-recap-april-2021/).]
|
||
|
|
|
||
|
|
## Editor features
|
||
|
|
|
||
|
|
Luau implementation now provides an internal API for type-aware autocomplete suggestions.
|
||
|
|
|
||
|
|
Roblox Studio will be the first user of this API and we plan for a new beta feature to come soon in addition to existing Luau-powered beta features like Go To Declaration, Type Hovers and Script Function Filter (you should check those out!)
|
||
|
|
|
||
|
|
## Performance improvements
|
||
|
|
|
||
|
|
Performance is a very important part of Luau implementation and we continue bringing in new performance optimizations:
|
||
|
|
|
||
|
|
* We've finished the work on internal `vector` value type that will be used by `Vector3` type in Roblox. Improvements of up to 10x can be seen for primitive operations and some of our heavy `Vector3` benchmarks have seen 2-3x improvement. You can read more about this feature [on Roblox Developer forums](https://devforum.roblox.com/t/native-luau-vector3-beta/)
|
||
|
|
* By optimizing the way string buffers are handled internally, we bring improvements to string operations including `string.lower`, `string.upper`, `string.reverse`, `string.rep`, `table.concat` and string concatenation operator `..`. Biggest improvements can be seen on large strings
|
||
|
|
* Improved performance of `table.insert` and `table.remove`. Operations in the middle of large arrays can be multiple times faster with this change
|
||
|
|
* Improved performance of internal table resize which brings additional 30% speedup for `table.insert`
|
||
|
|
* Improved performance of checks for missing table fields
|
||
|
|
|
||
|
|
## Generic functions
|
||
|
|
|
||
|
|
We had to temporarily disable generic function definitions last month after finding critical issues in the implementation.
|
||
|
|
|
||
|
|
While they are still not available, we are making steady progress on fixing those issues and making additional typechecking improvements to bring them back in.
|
||
|
|
|
||
|
|
## Debugger improvements
|
||
|
|
|
||
|
|
Debugging is now supported for parallel Luau Actors in Roblox Studio.
|
||
|
|
|
||
|
|
Read more about the feature [on Roblox Developer forums](https://devforum.roblox.com/t/parallel-lua-beta/) and try it out yourself.
|
||
|
|
|
||
|
|
## Behavior changes
|
||
|
|
|
||
|
|
Backwards compatibility is important for Luau, but sometimes a change is required to fix corner cases in the language / libraries or to improve performance. Even still, we try to keep impact of these changes to a minimum:
|
||
|
|
|
||
|
|
* __eq tag method will always get called for table comparisons even when a table is compared to itself
|
||
|
|
|
||
|
|
## Coming soon...
|
||
|
|
|
||
|
|
* Better type refinements for statements under a condition using a new constraint resolver. Luau will now understand complex conditions combining `and`/`not` and type guards with more improvements to come
|