Trait Parser
pub trait Parser: ArrowPrimitiveType {
// Required method
fn parse(string: &str) -> Option<Self::Native>;
// Provided method
fn parse_formatted(string: &str, _format: &str) -> Option<Self::Native> { ... }
}
Expand description
Specialized parsing implementations to convert strings to Arrow types.
This is used by csv and json reader and can be used directly as well.
§Example
To parse a string to a Date32Type
:
use arrow_cast::parse::Parser;
use arrow_array::types::Date32Type;
let date = Date32Type::parse("2021-01-01").unwrap();
assert_eq!(date, 18628);
To parse a string to a TimestampNanosecondType
:
use arrow_cast::parse::Parser;
use arrow_array::types::TimestampNanosecondType;
let ts = TimestampNanosecondType::parse("2021-01-01T00:00:00.123456789Z").unwrap();
assert_eq!(ts, 1609459200123456789);
Required Methods§
Provided Methods§
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.