:sig
String

:desc
Primary string type used throughout UCE.

`String` is an alias for `std::string`.

It is used for request data, headers, cookie values, file contents, query strings, JSON text, and WebSocket payloads.

Because it is backed by `std::string`, it is binary-safe and may also contain raw bytes.

For UTF-8-aware splitting, use helpers such as `split_utf8()` instead of assuming one byte equals one character.

:see
>types

:related
**PHP:** Native PHP strings with helpers such as `substr()`, `trim()`, `explode()`, and `implode()`
**JavaScript / Node.js:** JavaScript `string` values with methods such as `slice()`, `trim()`, `split()`, and `join()`