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Remove parentheses from nested structure matching

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Daniel P H Fox (Roblox) 2025-03-03 10:54:29 -08:00 • committed by GitHub
parent edc415d823
commit 97c355379c
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docs/syntax-structure-matching.md
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@ -173,30 +173,6 @@ Then desugars again to:
bar = data["foo"]["bar"]
```
To avoid fully qualifying multiple paths, parentheses can be used to share a common prefix:
```Lua
{ .foo(.bar, myBaz = ["baz"]) }
```
This desugars once to:
```Lua
{ .foo.bar, myBaz = .foo["baz"] }
```
Then desugars twice to:
```Lua
{ foo = ["foo"]["bar"], myBaz = ["foo"]["baz"] }
```
Then desugars again to:
```Lua
local bar, myBaz = data["foo"]["bar"], data["foo"]["baz"]
```
## Alternatives
### Unpack syntax
@ -331,4 +307,4 @@ match { myFoo = .foo }
in { myFoo = .foo }
```
But this proposal punts on the issue, as this is most relevant for only certain implementations of matching, and so is considered external to the main syntax. We are free to decide on this later, once we know what the syntax looks like inside of the braces, should we agree that braces are desirable in any case.
But this proposal punts on the issue, as this is most relevant for only certain implementations of matching, and so is considered external to the main syntax. We are free to decide on this later, once we know what the syntax looks like inside of the braces, should we agree that braces are desirable in any case.