AINewsnow

Run the Old Function Beside the New One Before You Delete It

A small diff is not a safe diff. Safe means the old code and the new code agree on the same inputs. Characterization tests tell you what the old code does. They do not tell you whether your replacement still does it. So keep both versions running. Compare them on every fixture you have. Delete the…

Read the full story at DEV Community — AI ↗

Timeline · 1 report

  1. 2026-11-07 10:01 · DEV Community — AI
    Run the Old Function Beside the New One Before You Delete It

More stories

  1. Election backlash against data centers rattles AI stocks and expansion plans — TechCrunch AI
  2. Anthropic strikes $3.4bn deal for gas-fired generators to power AI data centres — Financial Times AI
  3. OpenAI to keep expanding AI data centers despite election results favoring restrictions — DigiTimes Asia
  4. Tencent AI chief warns AI will soon master biology, raising new safety risks — SCMP China Tech
  5. Hydra-PSIE expands 'Coeziune OM–IA' DOI registry to 39 published works — DEV Community — AI
  6. Developer's 48-Hour Field Notes Detail Free-Tier LLM Batch Job Failures — DEV Community — AI
  7. Apple's John Ternus reportedly pushing for faster AI progress beyond Siri upgrades — Techmeme
  8. US AI Safety Center Staff Now Report to White House, Raising Independence Concerns — AP News

Get the daily brief of stories like this at 6:30 every morning →