Struct FieldErrorOptions

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struct FieldErrorOptions {
    class: Vec<String>,
    message: Option<String>,
    no_field_hint: Option<String>,
}

Expand description

#[externalptr(field_error(class = ..., message = ..., no_field_hint = ...))].

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§class: Vec<String>

The classes put in front of the errors the R field readers raise themselves (#1899), TypedExternal::FIELD_ERROR_CLASS.

§message: Option<String>

The package’s message for a receiver of the class whose pointer is no T or that carries none (#1920), TypedExternal::FIELD_ERROR_MESSAGE.

§no_field_hint: Option<String>

A sentence the miniextendr_no_field error adds after its field list, each %s replaced by the name asked for (#2112).

Trait Implementations§

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impl Default for FieldErrorOptions

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for FieldErrorOptions

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,

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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,

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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> SizeHint for T
where T: ?Sized,

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default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)

Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more

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default fn upper_bound(&self) -> Option<usize>

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more

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final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an estimate for the number of elements this container like type contains. Read more

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