Enum std::collections::TryReserveError

pub enum TryReserveError {
    CapacityOverflow,
    AllocError {
        layout: Layout,
        // some fields omitted
    },
}

🔬 This is a nightly-only experimental API. (try_reserve #48043)

new API

try_reserve 方法的错误类型。

Variants

CapacityOverflow

🔬 This is a nightly-only experimental API. (try_reserve #48043)

new API

由于计算出的容量超过集合的最大值 (通常为 isize::MAX 字节) 而导致错误。

AllocError

🔬 This is a nightly-only experimental API. (try_reserve #48043)

new API

内存分配器返回错误

Fields of AllocError

layout: Layout

🔬 This is a nightly-only experimental API. (try_reserve #48043)

new API

分配请求的布局失败

Trait Implementations

impl Clone for TryReserveError

pub fn clone(&self) -> TryReserveError

返回值的副本。

fn clone_from(&mut self, source: &Self)

从 source 执行复制分配。

impl Debug for TryReserveError

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 TryReserveError

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

使用给定的格式化程序格式化该值。

impl Error for TryReserveError

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 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

impl From<LayoutError> for TryReserveError

pub fn from(LayoutError) -> TryReserveError

始终评估为 TryReserveError::CapacityOverflow。

impl PartialEq<TryReserveError> for TryReserveError

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

此方法测试 self 和 other 值是否相等，并由 == 使用。

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

此方法测试 !=。

impl Eq for TryReserveError

impl StructuralEq for TryReserveError

impl StructuralPartialEq for TryReserveError