std::io::SeekFrom - Rust
Description: API documentation for the Rust `SeekFrom` enum in crate `std`.
Keywords: rust, rustlang, rust-lang, SeekFrom

# 1.0.0[−][src]Enum std::io::SeekFrom

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

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

It is used by the `Seek` trait.

## Variants

`Start(u64)`

Set the offset to the provided number of bytes.

`End(i64)`

Set 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)`

Set 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

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`impl Copy for SeekFrom`

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`impl PartialEq for SeekFrom`

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####

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

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This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

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

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This method tests for `!=`.

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`impl Eq for SeekFrom`

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`impl Clone for SeekFrom`

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`fn clone(&self) -> SeekFrom`

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Returns a copy of the value. Read more

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

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Performs copy-assignment from `source`. Read more

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`impl Debug for SeekFrom`

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`fn fmt(&self, f: &mut Formatter) -> Result`

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Formats the value using the given formatter. Read more

## Auto Trait Implementations

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`impl Send for SeekFrom`

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`impl Sync for SeekFrom`

## Blanket Implementations

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`impl<T> From for T`

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`fn from(t: T) -> T`

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Performs the conversion.

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`impl<T, U> TryFrom for T where T: From<U>,`

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#### `type Error = !`

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

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

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🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

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`impl<T, U> TryInto for T where U: TryFrom<T>,`

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#### `type Error = <U as TryFrom<T>>::Error`

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

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

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🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

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

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`fn into(self) -> U`

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Performs the conversion.

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

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ⓘImportant traits for &'a mut I

### Important traits for &'a mut I

`impl<'a, I> Iterator for &'a mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`

`fn borrow(&self) -> &T`

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Immutably borrows from an owned value. Read more

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

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####
ⓘImportant traits for &'a mut I

### Important traits for &'a mut I

`impl<'a, I> Iterator for &'a mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`

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

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Mutably borrows from an owned value. Read more

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

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`fn get_type_id(&self) -> TypeId`

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🔬 This is a nightly-only experimental API. (`get_type_id` #27745)

this method will likely be replaced by an associated static

Gets the `TypeId` of `self`. Read more

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`impl<T> ToOwned for T where T: Clone,`

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#### `type Owned = T`

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`fn to_owned(&self) -> T`

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Creates owned data from borrowed data, usually by cloning. Read more

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`fn clone_into(&self, target: &mut T)`

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🔬 This is a nightly-only experimental API. (`toowned_clone_into` #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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