Serialization Without Crates

Key/Value Parse

Split Serialized Text

Deserialization turns text back into values. For a tiny key/value format, split_once separates the fields safely.

Program

Play the program to choose a raw record and parse it into a key and value.

key_value_parse.rs 
fn main() {
    let raw = ;
    let parsed = parse_pair(raw).unwrap_or(("invalid", ""));
    println!("{}:{}", parsed.0, parsed.1);
}

fn parse_pair(text: &str) -> Option<(&str, &str)> {
    let (key, value) = text.split_once('=')?;
    Some((key, value))
}

fn main() {
    let raw = ;
    let parsed = parse_pair(raw).unwrap_or(("invalid", ""));
    println!("{}:{}", parsed.0, parsed.1);
}

fn parse_pair(text: &str) -> Option<(&str, &str)> {
    let (key, value) = text.split_once('=')?;
    Some((key, value))
}

fn main() {
    let raw = ;
    let parsed = parse_pair(raw).unwrap_or(("invalid", ""));
    println!("{}:{}", parsed.0, parsed.1);
}

fn parse_pair(text: &str) -> Option<(&str, &str)> {
    let (key, value) = text.split_once('=')?;
    Some((key, value))
}
deserialization Deserialization reads structured text back into program values.
split_once `split_once('=')` returns `None` if the separator is missing.
fallback `unwrap_or` supplies a controlled fallback for malformed input.