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Add local...in syntax

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Daniel P H Fox (Roblox) 2025-01-25 17:26:47 -08:00 • committed by GitHub
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docs/syntax-multiple-index.md
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@ -292,6 +292,16 @@ local useState = require("@react")[local]
There is nothing functionally wrong with this, so the proposal doesn't discard this possibility, but it was deemed to have a slightly odd shape compared to other Luau constructs. It could also have an adverse effect on line length. There is nothing functionally wrong with this, so the proposal doesn't discard this possibility, but it was deemed to have a slightly odd shape compared to other Luau constructs. It could also have an adverse effect on line length.
A `local...in` syntax was considered to make the relationship between identifiers and the indexing operation clearer.
```Lua
local amelia, bethany, carol in nicknames
amelia, bethany, carol in nicknames
```
This was tacitly discarded for now over concerns that the reassignment doesn't seem obvious, and may not make intuitive sense when considered together with `for..in` syntax.
### Implicit key renaming ### Implicit key renaming
Renaming identifiers was considered with implicit keys, and should be possible with full backwards compatibility, and support for arbitrary expressions. Renaming identifiers was considered with implicit keys, and should be possible with full backwards compatibility, and support for arbitrary expressions.