Struct `PanicMessage`

pub struct PanicMessage<'a> { pub(in ::panic::panic_info) message: &'a Arguments<'a> }

A message that was given to the panic!() macro.

The Display implementation of this type will format the message with the arguments that were given to the panic!() macro.

See PanicInfo::message.

Fields

message: &'a Arguments<'a>

Implementations

`impl<'a> PanicMessage<'a>`

const fn as_str(&self) -> Option<&'static str>

Gets the formatted message, if it has no arguments to be formatted at runtime.

This can be used to avoid allocations in some cases.

Guarantees

For panic!("just a literal"), this function is guaranteed to return Some("just a literal").

For most cases with placeholders, this function will return None.

See fmt::Arguments::as_str for details.

Trait Implementations

`impl Debug for PanicMessage<'_>`

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

`impl Display for PanicMessage<'_>`

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

Auto Trait Implementations

`impl<'a> !Send for PanicMessage<'a>`

`impl<'a> !Sync for PanicMessage<'a>`

`impl<'a> Freeze for PanicMessage<'a>`

`impl<'a> RefUnwindSafe for PanicMessage<'a>`

`impl<'a> Unpin for PanicMessage<'a>`

`impl<'a> UnsafeUnpin for PanicMessage<'a>`

`impl<'a> UnwindSafe for PanicMessage<'a>`

Blanket Implementations

`impl<T> Any for PanicMessage<'a> where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for PanicMessage<'a> where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for PanicMessage<'a> where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> From<T> for PanicMessage<'a>`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> SizeHint for PanicMessage<'a> where T: ?Sized,`

fn lower_bound(&self) -> usize
fn upper_bound(&self) -> Option<usize>

`impl<T> SizedTypeProperties for PanicMessage<'a>`

`impl<T, U> Into for PanicMessage<'a> where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for PanicMessage<'a> where U: Into<T>,`

type Error = Infallible;
fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

`impl<T, U> TryInto for PanicMessage<'a> where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>