pub enum NullValues {
AllColumnsSingle(PlSmallStr),
AllColumns(Vec<PlSmallStr>),
Named(Vec<(PlSmallStr, PlSmallStr)>),
}
Available on crate features
csv
or json
only.Variants§
AllColumnsSingle(PlSmallStr)
A single value that’s used for all columns
AllColumns(Vec<PlSmallStr>)
Multiple values that are used for all columns
Named(Vec<(PlSmallStr, PlSmallStr)>)
Tuples that map column names to null value of that column
Implementations§
Source§impl NullValues
impl NullValues
pub fn compile(self, schema: &Schema) -> PolarsResult<NullValuesCompiled>
Trait Implementations§
Source§impl Clone for NullValues
impl Clone for NullValues
Source§fn clone(&self) -> NullValues
fn clone(&self) -> NullValues
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 moreSource§impl Debug for NullValues
impl Debug for NullValues
Source§impl<'de> Deserialize<'de> for NullValues
impl<'de> Deserialize<'de> for NullValues
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Source§impl Hash for NullValues
impl Hash for NullValues
Source§impl PartialEq for NullValues
impl PartialEq for NullValues
Source§impl Serialize for NullValues
impl Serialize for NullValues
impl Eq for NullValues
impl StructuralPartialEq for NullValues
Auto Trait Implementations§
impl Freeze for NullValues
impl RefUnwindSafe for NullValues
impl Send for NullValues
impl Sync for NullValues
impl Unpin for NullValues
impl UnwindSafe for NullValues
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> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
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