Struct FixedBufStr

pub struct FixedBufStr<const N: usize> { /* private fields */ }

Available on crate feature format only.

Fixed length string buffer.

Implementations

impl<const N: usize> FixedBufStr<N>

pub fn new() -> FixedBufStr<N>

Creates a new fixed length string buffer.

pub fn str(&self) -> &str

Extracts the string from this buffer.

pub fn from_str(value: &str) -> Self

Constructs this buffer from an existing string.

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

Appends a raw byte buffer at the end of this string buffer.

Returns the number of bytes written.

Arguments

• buf: the raw byte buffer to append.

returns: usize

Safety

• FixedBufStr contains only valid UTF-8 strings so buf must contain only valid UTF-8 bytes.
• If buf contains invalid UTF-8 bytes, further operations on the log message buffer may result in UB.

Trait Implementations

impl<const N: usize> Clone for FixedBufStr<N>

fn clone(&self) -> FixedBufStr<N>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<const N: usize> Debug for FixedBufStr<N>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<const N: usize> Default for FixedBufStr<N>

fn default() -> Self

Returns the “default value” for a type.

impl<const N: usize> Write for FixedBufStr<N>

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

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a char into this writer, returning whether the write succeeded.

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

Glue for usage of the write! macro with implementors of this trait.