CodeSampleX

Sample

generate unified diff string with UnifiedDiff

sha256:d281df7cdb362be7bbbf1d55aa4c4a6c6813cb072d288e20f0a6b8fcd332cddc

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

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-23

Case

HOW
Goal
generate unified diff string with UnifiedDiff
Packages
Symbols
  • difflib.GetUnifiedDiffString
  • difflib.UnifiedDiff
Created
2026-08-23T15:11:30Z

Contract

  1. GenerateUnifiedDiff returns empty string when inputs are identical
  2. GenerateUnifiedDiff formats unified diff with file headers and modified lines
  3. difflib.GetUnifiedDiffString generates unified diff string from UnifiedDiff struct

Files

  • PROMPT.md
  • csx.json
  • diff.go
  • go.mod
  • go.sum
  • spec.json
  • test/contract_test.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous