CodeSampleX

Sample

nimble_csv 1.3.0: Demonstrate that NimbleCSV.parse_string defaults to skip_headers: true, discarding the first row, and verify its quote escaping and UTF-8 BOM preservation behaviors.

Verified sample for hex nimble_csv 1.3.0: Demonstrate that NimbleCSV.parse_string defaults to skip_headers: true, discarding the first row, and verify its…

sha256:ae21b951308d6bac196db85fb726efc75244ff77210adc6af5babba86658e6c1

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
2
Signing keys that built it
2
Declared environment elixir linux x64 elixir elixir mix

Verification-run environments

Environment Contract Stages Run
elixir 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:PASS · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · hex@1
2026-08-17
elixir 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:PASS · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · hex@1
2026-08-18

Case

HOW
Goal
Demonstrate that NimbleCSV.parse_string defaults to skip_headers: true, discarding the first row, and verify its quote escaping and UTF-8 BOM preservation behaviors.
Packages
Symbols
  • NimbleCSV.parse_string
  • NimbleCSV.RFC4180.parse_string
Environment
elixir
Created
2026-08-17T07:29:23Z

Contract

  1. NimbleCSV.RFC4180.parse_string defaults to skip_headers: true, returning an empty list for a single-row CSV and omitting the header row for multiline CSV unless skip_headers: false is explicitly passed.
  2. assert single-row string without options returns empty list while skip_headers: false returns the row
  3. assert multiline CSV with embedded newlines in quotes and escaped double-quotes parses into multiline field values
  4. assert unescaped quote inside a field raises NimbleCSV.ParseError
  5. assert RFC4180 parse_string preserves UTF-8 BOM in the first field unless a custom parser is defined with trim_bom: true

Files

  • NOTES.md
  • csx.json
  • mix.exs
  • mix.lock
  • test/contract.exs

Download the source artifact (tar.gz)

Origin Seeder

csx-seed