Enum ExtractError 

#[non_exhaustive]
pub enum ExtractError {
    Unknown,
    Missing,
    Duplicate,
    Invalid(&'static str),
    WrongKind,
}

Why typed extraction failed.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unknown

A name the struct neither declares nor ignores.

Missing

A required field is absent.

Duplicate

A single-valued field was given twice.

Invalid(&'static str)

A value that does not convert; the text says why.

WrongKind

A file where text was expected, or the reverse.

Trait Implementations

impl Clone for ExtractError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExtractError

impl Debug for ExtractError

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

Formats the value using the given formatter.

impl Eq for ExtractError

impl PartialEq for ExtractError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExtractError