Struct tk::error::NullDataPtr

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pub struct NullDataPtr(pub Obj);
Expand description

Fails to retrieve data because the internal data pointer is null.

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§0: Obj

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impl Debug for NullDataPtr

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

Formats the value using the given formatter. Read more
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impl Display for NullDataPtr

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

Formats the value using the given formatter. Read more
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impl Error for NullDataPtr

1.30.0 · source§

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
Read more
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fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type based access to context intended for error reports. Read more
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impl From<NullDataPtr> for TkError

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fn from(e: NullDataPtr) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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<Enum> Error for Enum

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fn error<T, Dest, Index>(self) -> Result<T, Dest>where Self: Sized + ExchangeInto<Dest, Index>,

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impl<_I0, _T0, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0,)>> for Destwhere Src: Proto<Type = __1<_T0>>, Dest: ExchangeFrom<_T0, _I0>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _T0, _T1, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1)>> for Destwhere Src: Proto<Type = __2<_T0, _T1>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _T0, _T1, _T2, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2)>> for Destwhere Src: Proto<Type = __3<_T0, _T1, _T2>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _T0, _T1, _T2, _T3, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3)>> for Destwhere Src: Proto<Type = __4<_T0, _T1, _T2, _T3>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _T0, _T1, _T2, _T3, _T4, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4)>> for Destwhere Src: Proto<Type = __5<_T0, _T1, _T2, _T3, _T4>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _T0, _T1, _T2, _T3, _T4, _T5, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5)>> for Destwhere Src: Proto<Type = __6<_T0, _T1, _T2, _T3, _T4, _T5>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _T0, _T1, _T2, _T3, _T4, _T5, _T6, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6)>> for Destwhere Src: Proto<Type = __7<_T0, _T1, _T2, _T3, _T4, _T5, _T6>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7)>> for Destwhere Src: Proto<Type = __8<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8)>> for Destwhere Src: Proto<Type = __9<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9)>> for Destwhere Src: Proto<Type = __10<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10)>> for Destwhere Src: Proto<Type = __11<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9> + ExchangeFrom<_T10, _I10>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11)>> for Destwhere Src: Proto<Type = __12<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9> + ExchangeFrom<_T10, _I10> + ExchangeFrom<_T11, _I11>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12)>> for Destwhere Src: Proto<Type = __13<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9> + ExchangeFrom<_T10, _I10> + ExchangeFrom<_T11, _I11> + ExchangeFrom<_T12, _I12>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _I13, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, _T13, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _I13)>> for Destwhere Src: Proto<Type = __14<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, _T13>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9> + ExchangeFrom<_T10, _I10> + ExchangeFrom<_T11, _I11> + ExchangeFrom<_T12, _I12> + ExchangeFrom<_T13, _I13>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _I13, _I14, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, _T13, _T14, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _I13, _I14)>> for Destwhere Src: Proto<Type = __15<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, _T13, _T14>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9> + ExchangeFrom<_T10, _I10> + ExchangeFrom<_T11, _I11> + ExchangeFrom<_T12, _I12> + ExchangeFrom<_T13, _I13> + ExchangeFrom<_T14, _I14>,

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fn exchange_from(src: Src) -> Dest

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impl<_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _I13, _I14, _I15, _T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, _T13, _T14, _T15, Src, Dest> ExchangeFrom<Src, EnumToEnum<(_I0, _I1, _I2, _I3, _I4, _I5, _I6, _I7, _I8, _I9, _I10, _I11, _I12, _I13, _I14, _I15)>> for Destwhere Src: Proto<Type = __16<_T0, _T1, _T2, _T3, _T4, _T5, _T6, _T7, _T8, _T9, _T10, _T11, _T12, _T13, _T14, _T15>>, Dest: ExchangeFrom<_T0, _I0> + ExchangeFrom<_T1, _I1> + ExchangeFrom<_T2, _I2> + ExchangeFrom<_T3, _I3> + ExchangeFrom<_T4, _I4> + ExchangeFrom<_T5, _I5> + ExchangeFrom<_T6, _I6> + ExchangeFrom<_T7, _I7> + ExchangeFrom<_T8, _I8> + ExchangeFrom<_T9, _I9> + ExchangeFrom<_T10, _I10> + ExchangeFrom<_T11, _I11> + ExchangeFrom<_T12, _I12> + ExchangeFrom<_T13, _I13> + ExchangeFrom<_T14, _I14> + ExchangeFrom<_T15, _I15>,

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fn exchange_from(src: Src) -> Dest

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impl<Src, Dest, Index> ExchangeInto<Dest, Index> for Srcwhere Dest: ExchangeFrom<Src, Index>,

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fn exchange_into(self) -> Dest

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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 Twhere 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<Enum, Variant, Index> IntoEnum<Enum, Index> for Variantwhere Enum: FromVariant<Variant, Index>,

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fn into_enum(self) -> Enum

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impl<Src, Dest> IntoTuple<Dest> for Srcwhere Dest: FromTuple<Src>,

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fn into_tuple(self) -> Dest

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impl<E> Provider for Ewhere E: Error + ?Sized,

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fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (provide_any)
Data providers should implement this method to provide all values they are able to provide by using demand. Read more
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impl<T, E> Ret<Result<T, E>, _WrapOk> for T

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fn ret(self) -> Result<T, E>

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impl<T, E, A> RetLog<Result<T, E>, A, _WrapOk> for Twhere A: LogAgent,

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fn ret_log(self, _item: impl Fn() -> <A as LogAgent>::Item) -> Result<T, E>

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impl<T, E, F, I> Throw<Result<T, F>, _WrapErr<I>> for Ewhere E: ExchangeInto<F, I>,

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fn throw(self) -> Result<T, F>

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impl<T, E, F, A, I> ThrowLog<Result<T, F>, A, _ToLog<I>> for Ewhere A: LogAgent, E: ToLog<A>, Log<E, A>: ExchangeInto<F, I>,

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fn throw_log(self, item: impl Fn() -> <A as LogAgent>::Item) -> Result<T, F>

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impl<Inner, Agent> ToLog<Agent> for Innerwhere Agent: LogAgent,

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fn new_log(self) -> Log<Inner, Agent>

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fn to_log(self, item: <Agent as LogAgent>::Item) -> Log<Inner, Agent>

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impl<T> ToString for Twhere 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 Twhere U: Into<T>,

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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 Twhere U: TryFrom<T>,

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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.