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Added a section about typecasting #20

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71f1dae
Added a section about casting
tapple Dec 20, 2025
528d973
Casting -> Typecasting
tapple Dec 21, 2025
9147d4c
noted that uuid and string are no longer interchangable
tapple Dec 21, 2025
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31 changes: 29 additions & 2 deletions src/content/docs/script/learn-slua/from-lsl.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,7 @@ float damage = 25.5;
string name = "Alice";
vector pos = <10, 20, 30>;
rotation rot = <0, 0, 0, 1>;
key uuid = "...";
key k = "...";
list items = [1, 2, 3];
```
</Fragment>
Expand All @@ -69,7 +69,7 @@ local damage: number = 25.5
local name: string = "Alice"
local pos: vector = vector(10, 20, 30)
local rot: quaternion = quaternion(0, 0, 0, 1)
local uuid: string = "..." -- keys are strings
local k: uuid = uuid("...")
local items: {number} = {1, 2, 3} -- tables, not lists
```
</Fragment>
Expand All @@ -79,6 +79,33 @@ local items: {number} = {1, 2, 3} -- tables, not lists
**Type annotations recommended!** While optional, they catch errors before runtime and make code self-documenting.
</Aside>

#### Typecasting
In many cases, luau does typecasting automatically. Here's how to do it explicitly:
<CodeComparison>
<Fragment slot="lsl">
```lsl
(integer)"-4.4";
(float)"25.5";
(string)99.9;
(vector)"<10, 20, 30>";
(rotation)"<0, 0, 0, 1>";
(key)"700843d3-0d15-c427-81ab-e9c8a0dcdb1e";
(list)"hello"; // equivilant to ["hello"]
```
</Fragment>
<Fragment slot="slua">
```luau
(math.modf("-4.4")) -- extra parentheses are necessary
tonumber("25.5")
tostring(99.9)
tovector("<10, 20, 30>")
toquaternion("<0, 0, 0, 1>")
uuid("700843d3-0d15-c427-81ab-e9c8a0dcdb1e")
{"hello"} -- table, not list
```
</Fragment>
</CodeComparison>

### Operators

| Operation | LSL | SLua | Notes |
Expand Down