Struct tracing_subscriber::fmt::writer::Tee[][src]

pub struct Tee<A, B> { /* fields omitted */ }
This is supported on crate feature fmt only.
Expand description

Combines two types implementing MakeWriter (or std::io::Write) to produce a writer that writes to both MakeWriter’s returned writers.

This is returned by the MakeWriterExt::and method. See the method documentation for details.

Implementations

Combines two types implementing MakeWriter, returning a new MakeWriter that produces writers that write to both outputs.

See the documentation for MakeWriterExt::and for details.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

The concrete io::Write implementation returned by make_writer. Read more

Returns an instance of Writer. Read more

Returns a Writer for writing data from the span or event described by the provided Metadata. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Write a buffer into this writer, returning how many bytes were written. Read more

Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more

Like write, except that it writes from a slice of buffers. Read more

Attempts to write an entire buffer into this writer. Read more

Writes a formatted string into this writer, returning any error encountered. Read more

🔬 This is a nightly-only experimental API. (can_vector #69941)

Determines if this Writer has an efficient write_vectored implementation. Read more

🔬 This is a nightly-only experimental API. (write_all_vectored #70436)

Attempts to write multiple buffers into this writer. Read more

Creates a “by reference” adapter for this instance of Write. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

This is supported on crate feature fmt only.

Wraps self and returns a MakeWriter that will only write output for events at or below the provided verbosity Level. For instance, Level::TRACE is considered to be _more verbosethanLevel::INFO`. Read more

This is supported on crate feature fmt only.

Wraps self and returns a MakeWriter that will only write output for events at or above the provided verbosity Level. Read more

This is supported on crate feature fmt only.

Wraps self with a predicate that takes a span or event’s Metadata and returns a bool. The returned MakeWriter’s MakeWriter::make_writer_for method will check the predicate to determine if a writer should be produced for a given span or event. Read more

This is supported on crate feature fmt only.

Combines self with another type implementing MakeWriter, returning a new MakeWriter that produces writers that write to both outputs. Read more

This is supported on crate feature fmt only.

Combines self with another type implementing MakeWriter, returning a new MakeWriter that calls other’s make_writer if self’s make_writer returns OptionalWriter::none. Read more

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more