polydat_core::iteration::comprehension::strategies::diagonal

Struct Diagonal

pub struct Diagonal;

Expand description

Sort by sum of indices ascending, ties in lexicographic order.

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impl Strategy for Diagonal

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fn name(&self) -> StrategyName

The strategy’s name. Mirrors StrategyName.

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fn accepts_input(&self, idx: Option<&IndexFn>) -> bool

V4 input-shape check (spec §3.6). None represents an input with no closed-form index function; only Lex accepts that. Concrete IndexFn variants are accepted per the per-strategy rules in spec §3.6’s table.

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fn has_closed_form_for(&self, idx: &IndexFn) -> bool

R2 push-down eligibility (spec §10.2 R2). true if this strategy has a closed-form indexed lookup over the given input. If false, apply uses the strategy’s fallback reorder over the materialized tuples.

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fn apply(&self, input: &EvaluatedInput, truncation: Option<u64>) -> Vec<Tuple>

Apply this strategy to the given input. Read more

Auto Trait Implementations§

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impl UnwindSafe for Diagonal

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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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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