GenericSequence

Trait GenericSequence 

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pub unsafe trait GenericSequence<T>: Sized + IntoIterator {
    type Length: ArrayLength;
    type Sequence: GenericSequence<T, Length = Self::Length> + FromIterator<T>;

    // Required method
    fn generate<F>(f: F) -> Self::Sequence
       where F: FnMut(usize) -> T;

    // Provided method
    fn repeat(value: T) -> Self::Sequence
       where T: Clone { ... }
}
Expand description

Defines some sequence with an associated length and iteration capabilities.

This is useful for passing N-length generic arrays as generics.

§Safety

Care must be taken when implementing such that methods are safe.

Lengths must match, and element drop on panic must be handled.

Required Associated Types§

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type Length: ArrayLength

GenericArray associated length

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type Sequence: GenericSequence<T, Length = Self::Length> + FromIterator<T>

Owned sequence type used in conjunction with reference implementations of GenericSequence

Required Methods§

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fn generate<F>(f: F) -> Self::Sequence
where F: FnMut(usize) -> T,

Initializes a new sequence instance using the given function.

If the generator function panics while initializing the sequence, any already initialized elements will be dropped.

See also FallibleGenericSequence::try_generate.

Provided Methods§

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fn repeat(value: T) -> Self::Sequence
where T: Clone,

Initializes a new sequence instance by repeating the given value.

This will only clone the value Length - 1 times, taking ownership for the last element.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

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impl<'a, T: 'a, S: GenericSequence<T>> GenericSequence<T> for &'a S

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type Length = <S as GenericSequence<T>>::Length

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type Sequence = <S as GenericSequence<T>>::Sequence

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fn generate<F>(f: F) -> Self::Sequence
where F: FnMut(usize) -> T,

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impl<'a, T: 'a, S: GenericSequence<T>> GenericSequence<T> for &'a mut S

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type Length = <S as GenericSequence<T>>::Length

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type Sequence = <S as GenericSequence<T>>::Sequence

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fn generate<F>(f: F) -> Self::Sequence
where F: FnMut(usize) -> T,

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impl<T, N: ArrayLength> GenericSequence<T> for Box<GenericArray<T, N>>

Available on crate feature alloc only.
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type Length = N

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type Sequence = Box<GenericArray<T, N>>

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fn generate<F>(f: F) -> Self::Sequence
where F: FnMut(usize) -> T,

Implementors§

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impl<T, N: ArrayLength> GenericSequence<T> for GenericArray<T, N>
where Self: IntoIterator<Item = T>,