Trait Extractor

pub trait Extractor {
    // Required methods
    fn get(&self, key: &str) -> Option<&str>;
    fn keys(&self) -> Vec<&str>;

    // Provided method
    fn get_all(&self, key: &str) -> Option<Vec<&str>> { ... }
}

Extractor provides an interface for removing fields from an underlying struct like HashMap

Required Methods

fn get(&self, key: &str) -> Option<&str>

Get a value from a key from the underlying data.

fn keys(&self) -> Vec<&str>

Collect all the keys from the underlying data.

Provided Methods

fn get_all(&self, key: &str) -> Option<Vec<&str>>

Get all values from a key from the underlying data.

Implementations on Foreign Types

impl Extractor for HeaderExtractor<'_>

fn get(&self, key: &str) -> Option<&str>

Get a value for a key from the HeaderMap. If the value is not valid ASCII, returns None.

fn keys(&self) -> Vec<&str>

Collect all the keys from the HeaderMap.

fn get_all(&self, key: &str) -> Option<Vec<&str>>

Get all the values for a key from the HeaderMap

Implementors

impl<S> Extractor for HashMap<String, String, S>

where S: BuildHasher,