Struct RangeError 

pub struct RangeError(pub String);

Marker for a host failure that should surface to the guest as the built-in RangeError subclass rather than a base Error. Return Err(range_error(...)) from a host-fn body; the register_host_fn wrapper downcasts for it when converting the Err into a guest throw. The message is the guest-visible e.message.

Tuple Fields

0: String

Trait Implementations

impl Debug for RangeError

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

Formats the value using the given formatter.

impl Display for RangeError

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

Formats the value using the given formatter.

impl Error for RangeError

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.