Struct InvalidKey 

pub struct InvalidKey {
    pub path: String,
    pub type_name: String,
}

Why a value cannot be a Map key or Set element.

Fields

path: String

How the offending part is reached from the value that was tested, such as Point.tags or Point.tags[0]. Empty when the value itself, not something nested inside it, is the problem.

type_name: String

The type that cannot be a key.

Implementations

impl InvalidKey

pub fn rule(&self) -> &'static str

The rule this violation breaks.

Float is excluded for a reason distinct from every other rejection: NaN != NaN breaks the total order a key needs, which has nothing to do with mutability. Stating that separately keeps anyone from later “fixing” Float as if it were just another mutable-handle case.

pub fn help(&self) -> String

A corrected textual example, tailored to the same distinction.

Trait Implementations

impl Clone for InvalidKey

fn clone(&self) -> InvalidKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InvalidKey

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

Formats the value using the given formatter.

impl Eq for InvalidKey

impl PartialEq for InvalidKey

fn eq(&self, other: &InvalidKey) -> 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 InvalidKey