Module cast 

Cast kernels to convert ArrayRef between supported datatypes.

See cast_with_options for more information on specific conversions.

Example:

// int32 to float64
let a = Int32Array::from(vec![5, 6, 7]);
let b = cast(&a, &DataType::Float64).unwrap();
let c = b.as_primitive::<Float64Type>();
assert_eq!(5.0, c.value(0));
assert_eq!(6.0, c.value(1));
assert_eq!(7.0, c.value(2));

Structs

CastOptions

CastOptions provides a way to override the default cast behaviors

Traits

DecimalCast

A utility trait that provides checked conversions between decimal types inspired by NumCast

Functions

can_cast_types

Return true if a value of type from_type can be cast into a value of to_type.

cast

Cast array to the provided data type and return a new Array with type to_type, if possible.

cast_num_to_bool

Cast numeric types to boolean

cast_single_string_to_boolean_default

Cast a single string to boolean with default cast option(safe=true).

cast_with_options

Try to cast array to to_type if possible.

num_cast

Natural cast between numeric types Return None if the input value can’t be casted to type O.

rescale_decimal

Rescales a decimal value from (input_precision, input_scale) to (output_precision, output_scale) and returns the converted number when it fits within the output precision.

single_bool_to_numeric

Cast single bool value to numeric value.

union_extract_by_type

Extracts the best-matching child array from a UnionArray for a given target type, and casts it to that type.