Struct tower_web::util::buf_stream::size_hint::SizeHint

pub struct SizeHint { /* fields omitted */ }

A BufStream size hint

The default implementation returns:

• 0 for available
• 0 for lower
• None for upper.

Methods

impl SizeHint

pub fn available(&self) -> usize

Returns the lower bound of the amount of data that can be read from the BufStream without NotReady being returned.

It is possible that more data is currently available.

pub fn lower(&self) -> usize

Returns the lower bound of data that the BufStream will yield before completing.

pub fn upper(&self) -> Option<usize>

Returns the upper bound of data the BufStream will yield before completing, or None if the value is unknown.

Trait Implementations

impl Debug for SizeHint

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

Formats the value using the given formatter.

impl Default for SizeHint

fn default() -> SizeHint

Returns the "default value" for a type.

impl Clone for SizeHint

fn clone(&self) -> SizeHint

Returns a copy of the value.

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

Performs copy-assignment from source.