Enum SetError 

#[non_exhaustive]
pub enum SetError {
    NoTargets,
    NoSuchScene {
        index: usize,
        count: usize,
    },
}

Why a set operation was refused.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NoTargets

A layer was added with no targets.

Refused rather than accepted as a no-op: a caller that built an empty target list has a bug upstream of here, and silently creating a layer that appears nowhere hides it until someone asks why the screen is blank.

NoSuchScene

A target named a scene the set does not have.

Fields

index: usize

What was asked for.

count: usize

How many the set holds, holes included.

Trait Implementations

impl Debug for SetError

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

Formats the value using the given formatter.

impl Display for SetError

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

Formats the value using the given formatter.

impl Eq for SetError

impl Error for SetError

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 SetError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SetError