Enum DataProcessingError 

pub enum DataProcessingError {
    Frame {
        context: String,
        reason: String,
    },
    NullValue {
        column: &'static str,
        row: usize,
    },
    NonPositiveInterval,
    LengthMismatch(String),
}

Errors returned by the data-processing functions.

Variants

Frame

A Polars operation failed. reason is Polars’ message; its error type is neither Clone nor PartialEq, so it is not kept as a source.

Fields

context: String

What was being done, e.g. "missing required column 'close'".

reason: String

Polars’ error message.

NullValue

A symbol or ts_us value is null.

Fields

column: &'static str

The column holding the null.

row: usize

Row position (in sorted order).

NonPositiveInterval

interval_seconds is zero or negative.

LengthMismatch(String)

The OHLCV column vectors differ in length; the payload lists every length.

Trait Implementations

impl Clone for DataProcessingError

fn clone(&self) -> DataProcessingError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DataProcessingError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for DataProcessingError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for DataProcessingError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for DataProcessingError

fn eq(&self, other: &DataProcessingError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DataProcessingError