Trait polars::export::arrow::array::MutableArray

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pub trait MutableArray: Debug + Send + Sync {
    fn data_type(&self) -> &DataType;

    fn len(&self) -> usize;

    fn validity(&self) -> Option<&MutableBitmap>;

    fn as_box(&mut self) -> Box<dyn Array + 'static, Global>;

    fn as_any(&self) -> &(dyn Any + 'static);

    fn as_mut_any(&mut self) -> &mut (dyn Any + 'static);

    fn push_null(&mut self);

    fn shrink_to_fit(&mut self);

    fn is_empty(&self) -> bool { ... }

    fn as_arc(&mut self) -> Arc<dyn Array + 'static> { ... }

    fn is_valid(&self, index: usize) -> bool { ... }
}
Expand description

A trait describing a mutable array; i.e. an array whose values can be changed. Mutable arrays cannot be cloned but can be mutated in place, thereby making them useful to perform numeric operations without allocations. As in Array, concrete arrays (such as MutablePrimitiveArray) implement how they are mutated.

Required methods

The DataType of the array.

The length of the array.

The optional validity of the array.

Convert itself to an (immutable) [‘Array’].

Convert to Any, to enable dynamic casting.

Convert to mutable Any, to enable dynamic casting.

Adds a new null element to the array.

Shrink the array to fit its length.

Provided methods

Whether the array is empty.

Convert itself to an (immutable) atomically reference counted Array.

Whether index is valid / set.

Panic

Panics if index >= self.len().

Implementors