CodeSampleX

Sample

verify github.com/jackc/pgx/v5.CopyFromFunc in pkg:golang/github.com/jackc/pgx/v5@v5.10.0

sha256:2a79a23762425c97f7d1c41d11186426b2a71e5b03678223a97699180683be79

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment go 1.26 windows 11 x64 go 1.26 go go 1

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
verify github.com/jackc/pgx/v5.CopyFromFunc in pkg:golang/github.com/jackc/pgx/v5@v5.10.0
Packages
Symbols
  • github.com/jackc/pgx/v5.CopyFromFunc
Environment
go 1.26.5
Created
2026-08-19T06:57:39Z

Contract

  1. pgx.CopyFromFunc creates a CopyFromSource implementation using a generator function
  2. pgx.CopyFromSource.Next advances iteration and returns false when generator returns nil row and nil error
  3. pgx.CopyFromSource.Values returns current row slice of values
  4. pgx.CopyFromSource.Err returns nil on clean iteration completion
  5. pgx.CopyFromSource propagates errors returned by the generator function
  6. sample helpers provide slice, channel, and transform streaming adapters using pgx.CopyFromFunc

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous