Enum Selector 

pub enum Selector {
    Key(String),
    Index(usize),
}

What a predicate sees as the second argument: a map key or an array index.

A predicate is called with the child value and its location. Maps pass a string key. Arrays pass a numeric index. The selector owns its key, so a closure can match it without fighting a borrowed &&str.

Variants

Key(String)

A map key.

Index(usize)

An array index.

Implementations

impl Selector

pub fn as_key(&self) -> Option<&str>

The key, if this selector is a map key.

pub fn as_index(&self) -> Option<usize>

The index, if this selector is an array index.

Trait Implementations

impl Clone for Selector

fn clone(&self) -> Selector

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Selector

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Selector

impl PartialEq for Selector

fn eq(&self, other: &Selector) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Selector