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---
source: tests/output.rs
expression: "get_stdout(path, &[\"log::Metadata\"])"
---
log Struct log::Metadata rusty-man
SYNOPSIS
pub struct Metadata<'a> { /* fields omitted */ }
DESCRIPTION
Metadata about a log message.
# Use
`Metadata` structs are created when users of the library use logging macros.
They are consumed by implementations of the `Log` trait in the `enabled` method.
`Record`s use `Metadata` to determine the log message's severity and target.
Users should use the `log_enabled!` macro in their code to avoid constructing expensive log
messages.
# Examples
use log::{Record, Level, Metadata};
struct MyLogger;
impl log::Log for MyLogger {
fn enabled(&self, metadata: &Metadata) -> bool {
metadata.level() <= Level::Info
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
println!("{} - {}", record.level(), record.args());
}
}
fn flush(&self) {}
}
METHODS
impl<'a> Metadata<'a>
builder
pub fn builder() -> MetadataBuilder<'a>
Returns a new builder.
level
pub fn level(&self) -> Level
The verbosity level of the message.
target
pub fn target(&self) -> &'a str
The name of the target of the directive.
IMPLEMENTATIONS
Trait Implementations
Clone
impl<'a> Clone for Metadata<'a>
Debug
impl<'a> Debug for Metadata<'a>
Eq
impl<'a> Eq for Metadata<'a>
Hash
impl<'a> Hash for Metadata<'a>
Ord
impl<'a> Ord for Metadata<'a>
PartialEq
impl<'a> PartialEq<Metadata<'a>> for Metadata<'a>
PartialOrd
impl<'a> PartialOrd<Metadata<'a>> for Metadata<'a>
StructuralEq
impl<'a> StructuralEq for Metadata<'a>
StructuralPartialEq
impl<'a> StructuralPartialEq for Metadata<'a>
Auto Trait Implementations
RefUnwindSafe
impl<'a> RefUnwindSafe for Metadata<'a>
Send
impl<'a> Send for Metadata<'a>
Sync
impl<'a> Sync for Metadata<'a>
Unpin
impl<'a> Unpin for Metadata<'a>
UnwindSafe
impl<'a> UnwindSafe for Metadata<'a>
Blanket Implementations
Any
impl<T> Any for T
where
    T: 'static + ?Sized,
Borrow
impl<T> Borrow<T> for T
where
    T: ?Sized,
BorrowMut
impl<T> BorrowMut<T> for T
where
    T: ?Sized,
From
impl<T> From<T> for T
Into
impl<T, U> Into<U> for T
where
    U: From<T>,
ToOwned
impl<T> ToOwned for T
where
    T: Clone,
TryFrom
impl<T, U> TryFrom<U> for T
where
    U: Into<T>,
TryInto
impl<T, U> TryInto<U> for T
where
    U: TryFrom<T>,