Enum Error 

pub enum Error {
    LastUsedWithoutPreviousValue,
    InvalidType,
    NotImplemented,
    InvalidNumber,
    DivideByZero,
    UnknownFunction(String),
    Function(FunctionError),
}

An error that occured while evaluating an expression

Variants

LastUsedWithoutPreviousValue

LAST FieldName was used but no previous value was provided

InvalidType

The expression expected a certain type, but the value was not the expected type

NotImplemented

Some aspect of evaluation is not implemented

InvalidNumber

The expression did not result in a number that can be used

DivideByZero

The expression attempted to divide by zero

UnknownFunction(String)

A function call was used to a function that does not exist

Function(FunctionError)

A function call failed

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.