CodeSampleX

Sample

github.com/google/uuid v1.6.0: Handle nullable database and JSON UUID values with uuid.NullUUID in google/uuid v1.6.0

Verified sample for golang github.com/google/uuid v1.6.0: Handle nullable database and JSON UUID values with uuid.NullUUID in google/uuid v1.6.0. The…

sha256:53087a733b6f5edec7b5844c167e2fe5a9dd63ab1aa08ad893515a9824ab493b

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment linux 24 · ubuntu · glibc 2.39 x64 go wsl

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1		 2026-08-19

Case

HOW
Goal
Handle nullable database and JSON UUID values with uuid.NullUUID in google/uuid v1.6.0
Packages
Symbols
  • uuid.NullUUID
Created
2026-08-18T19:15:11Z

Contract

  1. assert NullUUID with Valid false marshals to JSON null and returns nil driver.Value
  2. assert NullUUID with Valid true marshals to quoted UUID JSON and returns string driver.Value
  3. assert NullUUID UnmarshalJSON parses valid UUID string and unmarshals null literal to Valid false
  4. assert NullUUID Scan accepts byte slice, string, and nil, but rejects invalid types or malformed UUID strings

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous