Enum Capacities
pub enum Capacities {
Binary(usize, Option<usize>),
List(usize, Option<Box<Capacities>>),
Struct(usize, Option<Vec<Capacities>>),
Dictionary(usize, Option<Box<Capacities>>),
Array(usize),
}
Expand description
Define capacities to pre-allocate for child data or data buffers.
Variants§
Binary(usize, Option<usize>)
Binary, Utf8 and LargeUtf8 data types
Defines
- the capacity of the array offsets
- the capacity of the binary/ str buffer
List(usize, Option<Box<Capacities>>)
List and LargeList data types
Defines
- the capacity of the array offsets
- the capacity of the child data
Struct(usize, Option<Vec<Capacities>>)
Struct type
Defines
- the capacity of the array
- the capacities of the fields
Dictionary(usize, Option<Box<Capacities>>)
Dictionary type
Defines
- the capacity of the array/keys
- the capacity of the values
Array(usize)
Don’t preallocate inner buffers and rely on array growth strategy
Trait Implementations§
§impl Clone for Capacities
impl Clone for Capacities
§fn clone(&self) -> Capacities
fn clone(&self) -> Capacities
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 Capacities
impl RefUnwindSafe for Capacities
impl Send for Capacities
impl Sync for Capacities
impl Unpin for Capacities
impl UnwindSafe for Capacities
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
)