Struct polars_lazy::frame::OptState[−][src]

pub struct OptState {
    pub projection_pushdown: bool,
    pub predicate_pushdown: bool,
    pub type_coercion: bool,
    pub simplify_expr: bool,
    pub agg_scan_projection: bool,
    pub aggregate_pushdown: bool,
    pub global_string_cache: bool,
    pub join_pruning: bool,
}

This is supported on crate feature compile only.

Expand description

State of the allowed optimizations

Fields

projection_pushdown: boolpredicate_pushdown: booltype_coercion: boolsimplify_expr: boolagg_scan_projection: bool

Make sure that all needed columns are scannedn

aggregate_pushdown: boolglobal_string_cache: booljoin_pruning: bool

Trait Implementations

impl Clone for OptState

fn clone(&self) -> OptState

Returns a copy of the value. Read more

1.0.0[src]

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

Performs copy-assignment from source. Read more

impl Default for OptState

fn default() -> Self

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

impl Copy for OptState

Auto Trait Implementations

impl RefUnwindSafe for OptState

impl Send for OptState

impl Sync for OptState

impl Unpin for OptState

impl UnwindSafe for OptState

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

pub fn from(t: T) -> T

Performs the conversion.

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

pub fn into(self) -> U

Performs the conversion.

impl<T> Pointable for T

pub const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

pub unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

pub unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

pub unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)

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

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.