log

Struct Meta

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pub struct Meta<MD = NoMeta> { /* private fields */ }
Expand description

Meta data that can be associated with log sources.

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impl<MD> Meta<MD>

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pub fn new(source_location: Option<SourceLocation>, meta: Option<MD>) -> Self

Constructs a new Meta object with the optionally specified source location and meta data.

§Parameters
  • source_location - the source location of the log message.
  • meta - the meta data to associate with the log message.
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pub fn data(&self) -> Option<&MD>

Retrieves a reference to the underlying meta data.

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pub fn source(&self) -> Option<&SourceLocation>

Retrieves a reference to the source location, if this crate was built with feature = "log-source".

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pub fn time(&self) -> SystemTime

Retrieves the time that the meta object was created.

Auto Trait Implementations§

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impl<MD> Freeze for Meta<MD>
where MD: Freeze,

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impl<MD> RefUnwindSafe for Meta<MD>
where MD: RefUnwindSafe,

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impl<MD> Send for Meta<MD>
where MD: Send,

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impl<MD> Sync for Meta<MD>
where MD: Sync,

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impl<MD> Unpin for Meta<MD>
where MD: Unpin,

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impl<MD> UnwindSafe for Meta<MD>
where MD: UnwindSafe,

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> 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, 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.