# Enum serde::de::Unexpected

source · [−]

    pub enum Unexpected<'a> {
    Show 18 variants    Bool(bool),
        Unsigned(u64),
        Signed(i64),
        Float(f64),
        Char(char),
        Str(&'a str),
        Bytes(&'a [u8]),
        Unit,
        Option,
        NewtypeStruct,
        Seq,
        Map,
        Enum,
        UnitVariant,
        NewtypeVariant,
        TupleVariant,
        StructVariant,
        Other(&'a str),
    }

Expand description

`Unexpected` represents an unexpected invocation of any one of the `Visitor` trait methods.

This is used as an argument to the `invalid_type`, `invalid_value`, and `invalid_length` methods of the `Error` trait to build error messages.

ⓘ

    fn visit_bool<E>(self, v: bool) -> Result<Self::Value, E>
    where
        E: de::Error,
    {
        Err(de::Error::invalid_type(Unexpected::Bool(v), &self))
    }

## Variants

### `Bool(bool)`

The input contained a boolean value that was not expected.

### `Unsigned(u64)`

The input contained an unsigned integer `u8`, `u16`, `u32` or `u64` that was not expected.

### `Signed(i64)`

The input contained a signed integer `i8`, `i16`, `i32` or `i64` that was not expected.

### `Float(f64)`

The input contained a floating point `f32` or `f64` that was not expected.

### `Char(char)`

The input contained a `char` that was not expected.

### `Str(&'a str)`

The input contained a `&str` or `String` that was not expected.

### `Bytes(&'a [u8])`

The input contained a `&[u8]` or `Vec<u8>` that was not expected.

### `Unit`

The input contained a unit `()` that was not expected.

### `Option`

The input contained an `Option<T>` that was not expected.

### `NewtypeStruct`

The input contained a newtype struct that was not expected.

### `Seq`

The input contained a sequence that was not expected.

### `Map`

The input contained a map that was not expected.

### `Enum`

The input contained an enum that was not expected.

### `UnitVariant`

The input contained a unit variant that was not expected.

### `NewtypeVariant`

The input contained a newtype variant that was not expected.

### `TupleVariant`

The input contained a tuple variant that was not expected.

### `StructVariant`

The input contained a struct variant that was not expected.

### `Other(&'a str)`

A message stating what uncategorized thing the input contained that was not expected.

The message should be a noun or noun phrase, not capitalized and without a period. An example message is “unoriginal superhero”.

## Trait Implementations

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### impl<'a> Clone for Unexpected<'a>

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#### fn clone(&self) -> Unexpected<'a>

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from `source`. Read more

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### impl<'a> Debug for Unexpected<'a>

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

Formats the value using the given formatter. Read more

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### impl<'a> Display for Unexpected<'a>

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

Formats the value using the given formatter. Read more

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### impl<'a> PartialEq<Unexpected<'a>> for Unexpected<'a>

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#### fn eq(&self, other: &Unexpected<'a>) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

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#### fn ne(&self, other: &Unexpected<'a>) -> bool

This method tests for `!=`.

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### impl<'a> Copy for Unexpected<'a>

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### impl<'a> StructuralPartialEq for Unexpected<'a>

## Auto Trait Implementations

### impl<'a> RefUnwindSafe for Unexpected<'a>

### impl<'a> Send for Unexpected<'a>

### impl<'a> Sync for Unexpected<'a>

### impl<'a> Unpin for Unexpected<'a>

### impl<'a> UnwindSafe for Unexpected<'a>

## Blanket Implementations

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### impl<T> Any for T where
T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more

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### impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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### impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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### impl<T> From<T> for T

const: unstable · source

#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> ToOwned for T where
T: Clone,

#### type Owned = T

The resulting type after obtaining ownership.

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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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### impl<T> ToString for T where
T: Display + ?Sized,

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#### default fn to_string(&self) -> String

Converts the given value to a `String`. Read more

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### impl<T, U> TryFrom<U> for T where
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.