Creates a bounded sequence of exactly representable integer Numbers from start inclusive to end exclusive.
Signature
func range(end: Number) -> Res[List[Number], DataError]
func range(start: Number, end: Number) -> Res[List[Number], DataError]Each bound must be finite, integral, and exactly representable from -9007199254740991 through 9007199254740991. End is exclusive; descending bounds produce an empty list. Invalid endpoints return DataError; a host resource limit remains a Diagnostic.
Parameters
Returns
Examples
Range from zero
One bound starts at zero.
Devices
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main.kj
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0 entities
Scene controls
Loading the language runtime…
Output 0
No output.
State
Compile source to inspect its values.
TraceNo execution yet
- Executed source spans appear here.
Expected output
3
Range with bounds
The start is inclusive and end is exclusive.
Devices
Use this scene on another device
Show a QR code for your glasses, or send a link to another browser. You can keep working here.
Sharing starts a fresh run of the last compiled code. Your editor draft stays here.
Join a session
Open an invitation link, or paste a link or code from the other device.
Connect your other device
On RayNeo, open Menu → Connect live and scan this code. In another browser, open the invitation link below.
Or enter this code:
Waiting for another device. You can keep working while it connects.
Browsers can edit code; every device can use scene controls. The device that started the session controls playback.
Connection settings
A full invitation link includes its host. With a code alone, both devices need the same live host. Pairing setup
main.kj
Loading…Drag to orbit · select to inspect
0 entities
Scene controls
Loading the language runtime…
Output 0
No output.
State
Compile source to inspect its values.
TraceNo execution yet
- Executed source spans appear here.
Expected output
3
Rust definition
Rust interpreter builtin dispatch; one- and two-argument Number overloads return Res[List[Number], DataError] for invalid numeric endpoints.
View Rust documentation →Support: runtime