Function to_string 

pub fn to_string<T>(value: &T) -> Result<String>
where
    T: Serialize + ?Sized,

Serializes a value to an XML string.

Maps

Map keys are used verbatim as element names, so they must be valid XML names for the output to be strictly valid XML. Keys such as 1 or strings containing spaces produce structurally balanced but not strictly valid documents. Keys containing markup characters (<, >, &, quotes, or whitespace) are written verbatim into the tag names and will break the document structure — map keys must be trusted or validated by the caller.

Example

use serde::Serialize;
use serde_xml::to_string;

#[derive(Serialize)]
struct Person {
    name: String,
    age: u32,
}

let person = Person {
    name: "Alice".to_string(),
    age: 30,
};

let xml = to_string(&person).unwrap();
assert!(xml.contains("<name>Alice</name>"));