Struct std::cell::BorrowMutError

#[non_exhaustive]
pub struct BorrowMutError {}

RefCell::try_borrow_mut 返回的错误。

Trait Implementations

impl Debug for BorrowMutError

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

使用给定的格式化程序格式化该值。

impl Display for BorrowMutError

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

使用给定的格式化程序格式化该值。

impl Error for BorrowMutError

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

fn source(&self) -> Option<&(dyn Error + 'static)>

此错误的下级来源 (如果有)。

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace #53487)

返回发生错误的栈回溯 (如果有)。

fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting