pub struct File { /* private fields */ }Expand description
A reference to an open file on the filesystem.
Implementations
sourceimpl File
impl File
sourcepub async fn open(path: impl AsRef<Path>) -> Result<File>
pub async fn open(path: impl AsRef<Path>) -> Result<File>
Attempts to open a file in read-only mode.
sourcepub async fn create(path: impl AsRef<Path>) -> Result<File>
pub async fn create(path: impl AsRef<Path>) -> Result<File>
Opens a file in write-only mode.
This function will create a file if it does not exist, and will truncate it if it does.
sourcepub async fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>
pub async fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>
Reads a number of bytes starting from a given offset.
sourcepub async fn write_all_at(&self, buf: &[u8], offset: u64) -> Result<()>
pub async fn write_all_at(&self, buf: &[u8], offset: u64) -> Result<()>
Attempts to write an entire buffer starting from a given offset.
Auto Trait Implementations
impl RefUnwindSafe for File
impl Send for File
impl Sync for File
impl Unpin for File
impl UnwindSafe for File
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
sourcefn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can
then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more
sourcefn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more
sourcefn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s. Read more
sourcefn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s. Read more