Struct VaList

struct VaList<'a> { ... }

A variable argument list, equivalent to va_list in C.

Implementations

impl<'f> VaList<'f>

unsafe fn arg<T: VaArgSafe>(self: &mut Self) -> T

Advance to and read the next variable argument.

Safety

This function is only sound to call when:

  • there is a next variable argument available.
  • the next argument's type must be ABI-compatible with the type T.
  • the next argument must have a properly initialized value of type T.

Calling this function with an incompatible type, an invalid value, or when there are no more variable arguments, is unsound.

impl Debug for VaList<'_>

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

impl<'a> Freeze for VaList<'a>

impl<'a> RefUnwindSafe for VaList<'a>

impl<'a> Send for VaList<'a>

impl<'a> Sync for VaList<'a>

impl<'a> Unpin for VaList<'a>

impl<'a> UnwindSafe for VaList<'a>

impl<'f> Clone for VaList<'f>

fn clone(self: &Self) -> Self

impl<'f> Drop for VaList<'f>

fn drop(self: &mut Self)

impl<T> Any for VaList<'a>

fn type_id(self: &Self) -> TypeId

impl<T> Borrow for VaList<'a>

fn borrow(self: &Self) -> &T

impl<T> BorrowMut for VaList<'a>

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

impl<T> CloneToUninit for VaList<'a>

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

impl<T> From for VaList<'a>

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into for VaList<'a>

fn into(self: 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 VaList<'a>

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

impl<T, U> TryInto for VaList<'a>

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>