:sig
StringMap parse_query(String q)

:params
q : string containing URL parameters
return value : a StringMap containing the parameters

:see
>uri

:content
Decodes a query-string fragment such as `a=b&c=d` into a `StringMap`.

This is useful when you need to work with URL parameter data outside the normal request parsing flow.

Related:

- PHP: `parse_str()`
- JavaScript / Node.js: `URLSearchParams` or Node `querystring.parse()`