# tcbrindle/span (C++20 span backport)

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | safe-cpp-practices |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | tcbrindle/span (C++20 span backport) |
| Source URL | https://github.com/tcbrindle/span |
| Source type | repository |
| Date researched | 2026-10-27 |
| Researched by | tai (agent), model: Claude Opus 4.8, on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Backport; checks preconditions only when NDEBUG undefined.

## Changelog

| Date | Change |
|---|---|
| 2026-10-27 | Logged as consulted-but-not-analyzed. |