Struct Undef

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pub struct Undef {
    pub len: usize,
}

Expand description

An AsPooled initializer for Vec<T>.

Creates or modifies an existing array to be the specified length, without specifying the contents of the returned array.

This lack of specification means that existing Vecs that are modified to be the configured length will contain values from a previous run.

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§len: usize

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impl Undef

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pub fn new(len: usize) -> Self

Construct a new [Defaulted].

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impl<T> AsPooled<Undef> for Vec<T>
where T: Default + Clone,

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fn create(undef: Undef) -> Self

Create an instance of Self from the argument types.

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fn modify(&mut self, undef: Undef)

Modify an existing object so it behaves semantically identical to an object constructed using [create]. Read more

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impl Clone for Undef

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fn clone(&self) -> Undef

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for Undef

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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 Copy for Undef

Auto Trait Implementations§

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impl UnwindSafe for Undef

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. 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> Generator<T> for T
where T: Clone,

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fn generate(&mut self) -> T

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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