Struct LogBuffer 

pub struct LogBuffer { /* private fields */ }

A bounded store of log lines: when full, pushing drops the oldest line.

Cloning is cheap (lines live in shared chunks), so an application keeps one buffer in its state, pushes lines in update and hands it to a LogView every frame. Every line gets a number that never changes while it is in the buffer, which lets the view keep its scroll position and selection while old lines fall out.

Implementations

impl LogBuffer

pub fn new(capacity: usize) -> Self

An empty buffer keeping at most capacity lines (at least one).

pub fn push(&mut self, line: LogLine)

Adds a line at the end, dropping the oldest line when full.

pub fn clear(&mut self)

Removes every line.

pub fn len(&self) -> usize

How many lines the buffer holds.

pub fn is_empty(&self) -> bool

Whether the buffer holds no lines.

pub fn capacity(&self) -> usize

The most lines the buffer keeps.

pub fn get(&self, index: usize) -> Option<&LogLine>

The line at index, counted from the oldest line kept.

pub fn iter(&self) -> impl Iterator<Item = &LogLine>

Every line, oldest first.

Trait Implementations

impl Clone for LogBuffer

fn clone(&self) -> LogBuffer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogBuffer

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

Formats the value using the given formatter.