Enum VarargsError

pub enum VarargsError {
    InvalidArgumentType {
        index: usize,
        error: FromVariantError,
    },
    InvalidLength {
        length: usize,
        expected: IndexBounds,
    },
}

All possible errors that can occur when converting from Varargs.

For methods that return this error, see Varargs::check_length(), Varargs::get() or Varargs::get_opt(). Another context where this type is used is when destructuring Varargs into tuples.

Variants

InvalidArgumentType

At least one argument type mismatches.

Fields

index: usize

error: FromVariantError

InvalidLength

Number of arguments doesn’t match expectations.

Fields

length: usize

The number of arguments actually passed.

expected: IndexBounds

Trait Implementations

impl Debug for VarargsError

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

Formats the value using the given formatter.

impl Display for VarargsError

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

Formats the value using the given formatter.

impl Error for VarargsError

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.