Struct polars::prelude::ChainedWhen
source · pub struct ChainedWhen { /* private fields */ }Available on crate feature
lazy only.Expand description
Utility struct for the when-then-otherwise expression.
Represents the state of the expression after an additional when is called.
In this state, then must be called to continue to finish the expression.
Implementations§
source§impl ChainedWhen
impl ChainedWhen
pub fn then<E>(self, statement: E) -> ChainedThen
Trait Implementations§
source§impl Clone for ChainedWhen
impl Clone for ChainedWhen
source§fn clone(&self) -> ChainedWhen
fn clone(&self) -> ChainedWhen
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreAuto Trait Implementations§
impl Freeze for ChainedWhen
impl !RefUnwindSafe for ChainedWhen
impl Send for ChainedWhen
impl Sync for ChainedWhen
impl Unpin for ChainedWhen
impl !UnwindSafe for ChainedWhen
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
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