Module arrow::compute::kernels::cast [−][src]
Expand description
Defines cast kernels for ArrayRef
, to convert Array
s between
supported datatypes.
Example:
use arrow::array::*;
use arrow::compute::cast;
use arrow::datatypes::DataType;
use std::sync::Arc;
let a = Int32Array::from(vec![5, 6, 7]);
let array = Arc::new(a) as ArrayRef;
let b = cast(&array, &DataType::Float64).unwrap();
let c = b.as_any().downcast_ref::<Float64Array>().unwrap();
assert_eq!(5.0, c.value(0));
assert_eq!(6.0, c.value(1));
assert_eq!(7.0, c.value(2));
Structs
CastOptions provides a way to override the default cast behaviors
Constants
Functions
Return true if a value of type from_type
can be cast into a
value of to_type
. Note that such as cast may be lossy.
Cast array
to the provided data type and return a new Array with
type to_type
, if possible.
Cast array
to the provided data type and return a new Array with
type to_type
, if possible. It accepts CastOptions
to allow consumers
to configure cast behavior.