Trait Write 

pub trait Write {
    // Required method
    fn write(&mut self, buf: &[u8]) -> Result<usize>;

    // Provided methods
    fn write_all(&mut self, buf: &[u8]) -> Result<()> { ... }
    fn write_str(&mut self, s: &str) -> Result<()> { ... }
    fn write_fmt(&mut self, args: Arguments<'_>) -> Result<()> { ... }
}

A trait for objects which are byte-oriented sinks.

This is very similar to the standard library’s io::Write and share similiarities with fmt::Write. This trait is intended to be implemented for custom types used in no_std development.

Required Methods

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this object, returning how many bytes were written.

This function will attempt to write the entire contents of buf, but the entire write may not succeed, or the write may also generate an error. A call to write represents at most one attempt to write to any wrapped object.

Provided Methods

fn write_all(&mut self, buf: &[u8]) -> Result<()>

Attempts to write an entire buffer into this write.

This method will continously call write untill there is no more data or an error of non Error::BufferExhausted kind is returned.

fn write_str(&mut self, s: &str) -> Result<()>

Attempts to write a str into this write.

This method will continously call write untill there is no more data or an error of non Error::BufferExhausted kind is returned.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<()>

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

This method will continously call write untill there is no more data or an error of non Error::BufferExhausted kind is returned.

Implementors