> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/llms.txt.
> For full documentation content, see https://docs.nvidia.com/nemo/relay/llms-full.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/relay/_mcp/server.

# Function extract_variables

> Extract variables from one content string.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-ffi`.

<pre />

Extract variables from one content string.

Matching patterns are applied greedily by start position, preferring longer matches when multiple patterns overlap.

## Parameters

* `content`: Block content to analyze.
* `span_id`: Span identifier associated with the content.
* `patterns`: Variable patterns to evaluate.

## Returns

`Some(ExtractionResult)` when at least one variable is found and `None` otherwise.