[−][src]Struct polars::frame::ser::json::JsonReader
Implementations
impl<R> JsonReader<R> where
R: Read + Seek, [src]
R: Read + Seek,
pub fn with_schema(self, schema: Arc<Schema>) -> Self[src]
Set the JSON file's schema
pub fn infer_schema(self, max_records: Option<usize>) -> Self[src]
Set the JSON reader to infer the schema of the file
pub fn with_batch_size(self, batch_size: usize) -> Self[src]
Set the batch size (number of records to load at one time)
pub fn with_projection(self, projection: Vec<String>) -> Self[src]
Set the reader's column projection
Trait Implementations
impl<R> SerReader<R> for JsonReader<R> where
R: Read + Seek, [src]
R: Read + Seek,
Auto Trait Implementations
impl<R> RefUnwindSafe for JsonReader<R> where
R: RefUnwindSafe,
R: RefUnwindSafe,
impl<R> Send for JsonReader<R> where
R: Send,
R: Send,
impl<R> Sync for JsonReader<R> where
R: Sync,
R: Sync,
impl<R> Unpin for JsonReader<R> where
R: Unpin,
R: Unpin,
impl<R> UnwindSafe for JsonReader<R> where
R: UnwindSafe,
R: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,