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Metadata

Struct Metadata 

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pub struct Metadata { /* private fields */ }
Available on crate feature default and non-target_os=unknown only.
Expand description

Metadata for a file or directory.

Metadata is returned by metadata and symlink_metadata.

This type is a re-export of std::fs::Metadata.

Implementations§

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impl Metadata

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pub fn file_type(&self) -> FileType

Available on crate feature docs only.

Returns the file type from this metadata.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{:?}", metadata.file_type());
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pub fn is_dir(&self) -> bool

Available on crate feature docs only.

Returns true if this metadata is for a regular directory.

If this metadata is for a symbolic link, this method returns false.

§Examples
use async_std::fs;

let metadata = fs::metadata(".").await?;
println!("{:?}", metadata.is_dir());
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pub fn is_file(&self) -> bool

Available on crate feature docs only.

Returns true if this metadata is for a regular file.

If this metadata is for a symbolic link, this method returns false.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{:?}", metadata.is_file());
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pub fn len(&self) -> u64

Available on crate feature docs only.

Returns the file size in bytes.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{}", metadata.len());
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pub fn permissions(&self) -> Permissions

Available on crate feature docs only.

Returns the permissions from this metadata.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{:?}", metadata.permissions());
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pub fn modified(&self) -> Result<SystemTime>

Available on crate feature docs only.

Returns the last modification time.

§Errors

This data may not be available on all platforms, in which case an error will be returned.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{:?}", metadata.modified());
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pub fn accessed(&self) -> Result<SystemTime>

Available on crate feature docs only.

Returns the last access time.

§Errors

This data may not be available on all platforms, in which case an error will be returned.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{:?}", metadata.accessed());
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pub fn created(&self) -> Result<SystemTime>

Available on crate feature docs only.

Returns the creation time.

§Errors

This data may not be available on all platforms, in which case an error will be returned.

§Examples
use async_std::fs;

let metadata = fs::metadata("a.txt").await?;
println!("{:?}", metadata.created());

Trait Implementations§

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impl Clone for Metadata

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fn clone(&self) -> Metadata

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Metadata

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

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>

Performs the conversion.