core::io::seek

Enum SeekFrom

pub enum SeekFrom {
    Start(u64),
    End(i64),
    Current(i64),
}

🔬This is a nightly-only experimental API. (core_io #154046)

Expand description

Enumeration of possible methods to seek within an I/O object.

It is used by the Seek trait.

Variants§

§

Start(u64)

🔬This is a nightly-only experimental API. (core_io #154046)

Sets the offset to the provided number of bytes.

§

End(i64)

🔬This is a nightly-only experimental API. (core_io #154046)

Sets the offset to the size of this object plus the specified number of bytes.

It is possible to seek beyond the end of an object, but it’s an error to seek before byte 0.

§

Current(i64)

🔬This is a nightly-only experimental API. (core_io #154046)

Sets the offset to the current position plus the specified number of bytes.

It is possible to seek beyond the end of an object, but it’s an error to seek before byte 0.

Trait Implementations§

1.0.0 · Source§

impl Clone for SeekFrom

Source §

fn clone(&self) -> SeekFrom

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

1.0.0 · Source§

impl Debug for SeekFrom

Source §

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

Formats the value using the given formatter. Read more

1.0.0 · Source§

impl Eq for SeekFrom

Source §

#[doc(hidden)]
fn assert_fields_are_eq(&self)

🔬This is a nightly-only experimental API. (derive_eq_internals)

1.0.0 (const: unstable) · Source§

#[doc(hidden)]
fn assert_receiver_is_total_eq(&self)

👎Deprecated since 1.95.0:

implementation detail of #[derive(Eq)]

1.0.0 · Source§

impl PartialEq for SeekFrom

Source §

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

Equality operator ==. Read more

1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more

1.0.0 · Source§

impl StructuralPartialEq for SeekFrom

1.0.0 · Source§

impl TrivialClone for SeekFrom

Auto Trait Implementations§

§

impl RefUnwindSafe for SeekFrom

§

Blanket Implementations§

Source §

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

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

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

Mutably borrows from an owned value. Read more

Source §

impl<T> CloneToUninit for T
where T: Clone,

Source §

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

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)

Performs copy-assignment from self to dest. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

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

Source §

impl<T> Printable for T
where T: Copy + Debug,

Source §

impl<T> SizeHint for T
where T: ?Sized,

Source §

default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)

Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more

Source §

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

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more

Source §

final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an estimate for the number of elements this container like type contains. Read more

Source §