pub struct Record<'a> where
'a: 'a, { /* fields omitted */ }
The "payload" of a log message.
Record
structures are passed as parameters to the log
method of the Log
trait. Logger implementors manipulate these
structures in order to display log messages. Record
s are automatically
created by the log!
macro and so are not seen by log users.
Note that the level()
and target()
accessors are equivalent to
self.metadata().level()
and self.metadata().target()
respectively.
These methods are provided as a convenience for users of this structure.
The following example shows a simple logger that displays the level,
module path, and message of any Record
that is passed to it.
struct SimpleLogger;
impl log::Log for SimpleLogger {
fn enabled(&self, metadata: &log::Metadata) -> bool {
true
}
fn log(&self, record: &log::Record) {
if !self.enabled(record.metadata()) {
return;
}
println!("{}:{} -- {}",
record.level(),
record.target(),
record.args());
}
fn flush(&self) {}
}
Metadata about the log directive.
The verbosity level of the message.
The name of the target of the directive.
The module path of the message.
The source file containing the message.
The line containing the message.
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Mutably borrows from an owned value. Read more