Enum Error 

pub enum Error {
    SortKeyNotFound,
    CacheAlreadyExists,
    SortKeyExists,
    TableAlreadyExists,
    KeyNotFound,
}

Errors that can occur during cache operations.

Examples

use quickleaf::Error;
use quickleaf::Cache;
use quickleaf::valu3::traits::ToValueBehavior;

let mut cache = Cache::new(10);

// Trying to remove a non-existent key returns an error
match cache.remove("nonexistent") {
    Err(Error::KeyNotFound) => println!("Key not found as expected"),
    _ => panic!("Expected KeyNotFound error"),
}

Variants

SortKeyNotFound

The specified sort key was not found during list operations.

This can occur when using start_after_key in ListProps with a key that doesn’t exist in the cache.

Examples

use quickleaf::Error;
use quickleaf::Cache;
use quickleaf::ListProps;
use quickleaf::valu3::traits::ToValueBehavior;

let mut cache = Cache::new(10);
cache.insert("existing_key", "value");

let props = ListProps::default().start_after_key("nonexistent_key");
match cache.list(props) {
    Err(Error::SortKeyNotFound) => println!("Sort key not found"),
    _ => panic!("Expected SortKeyNotFound error"),
}

CacheAlreadyExists

A cache with the same identifier already exists.

This error is currently not used in the main API but reserved for future functionality.

SortKeyExists

A sort key already exists.

This error is currently not used in the main API but reserved for future functionality.

TableAlreadyExists

A table with the same name already exists.

This error is currently not used in the main API but reserved for future functionality.

KeyNotFound

The specified key was not found in the cache.

This occurs when trying to remove a key that doesn’t exist.

Examples

use quickleaf::Error;
use quickleaf::Cache;
use quickleaf::valu3::traits::ToValueBehavior;

let mut cache = Cache::new(10);

match cache.remove("missing_key") {
    Err(Error::KeyNotFound) => println!("Key not found"),
    Err(_) => println!("Other error"),
    Ok(_) => panic!("Expected an error"),
}

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.

impl PartialEq for Error

fn eq(&self, other: &Error) -> 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 Error