Struct std::ffi::VaListImpl

#[repr(transparent)]
pub struct VaListImpl<'f> { /* fields omitted */ }

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

va_list 的基本实现。

Implementations

impl<'f> VaListImpl<'f>

pub fn as_va_list(&'a mut self) -> VaList<'a, 'f>

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

将 VaListImpl 转换为与 C 的 va_list 二进制兼容的 VaList。

impl<'f> VaListImpl<'f>

pub unsafe fn arg<T>(&mut self) -> T where
    T: VaArgSafe, 

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

前进到下一个 arg。

pub unsafe fn with_copy<F, R>(&self, f: F) -> R where
    F: for<'copy> FnOnce(VaList<'copy, 'f>) -> R, 

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

在当前位置复制 va_list。

Trait Implementations

impl<'f> Clone for VaListImpl<'f>

pub fn clone(&self) -> VaListImpl<'f>

返回值的副本。

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

从 source 执行复制分配。

impl<'f> Debug for VaListImpl<'f>

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<'f> Drop for VaListImpl<'f>

pub fn drop(&mut self)

执行此类型的析构函数。