Struct Stopwatch

pub struct Stopwatch { /* private fields */ }

A Stopwatch is a struct that track elapsed time when started.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
assert_eq!(stopwatch.elapsed_secs(), 0.0);

stopwatch.tick(Duration::from_secs_f32(1.0)); // tick one second
assert_eq!(stopwatch.elapsed_secs(), 1.0);

stopwatch.pause();
stopwatch.tick(Duration::from_secs_f32(1.0)); // paused stopwatches don't tick
assert_eq!(stopwatch.elapsed_secs(), 1.0);

stopwatch.reset(); // reset the stopwatch
assert!(stopwatch.paused());
assert_eq!(stopwatch.elapsed_secs(), 0.0);

Implementations

impl Stopwatch

pub fn new() -> Self

Create a new unpaused Stopwatch with no elapsed time.

Examples

let stopwatch = Stopwatch::new();
assert_eq!(stopwatch.elapsed_secs(), 0.0);
assert_eq!(stopwatch.paused(), false);

pub fn elapsed(&self) -> Duration

Returns the elapsed time since the last reset of the stopwatch.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.tick(Duration::from_secs(1));
assert_eq!(stopwatch.elapsed(), Duration::from_secs(1));

See Also

elapsed_secs - if a f32 value is desirable instead.

pub fn elapsed_secs(&self) -> f32

Returns the elapsed time since the last reset of the stopwatch, in seconds.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.tick(Duration::from_secs(1));
assert_eq!(stopwatch.elapsed_secs(), 1.0);

See Also

elapsed - if a Duration is desirable instead.

pub fn set_elapsed(&mut self, time: Duration)

Sets the elapsed time of the stopwatch.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.set_elapsed(Duration::from_secs_f32(1.0));
assert_eq!(stopwatch.elapsed_secs(), 1.0);

pub fn tick(&mut self, delta: Duration) -> &Self

Advance the stopwatch by delta seconds. If the stopwatch is paused, ticking will not have any effect on elapsed time.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.tick(Duration::from_secs_f32(1.5));
assert_eq!(stopwatch.elapsed_secs(), 1.5);

pub fn pause(&mut self)

Pauses the stopwatch. Any call to tick while paused will not have any effect on the elapsed time.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.pause();
stopwatch.tick(Duration::from_secs_f32(1.5));
assert!(stopwatch.paused());
assert_eq!(stopwatch.elapsed_secs(), 0.0);

pub fn unpause(&mut self)

Unpauses the stopwatch. Resume the effect of ticking on elapsed time.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.pause();
stopwatch.tick(Duration::from_secs_f32(1.0));
stopwatch.unpause();
stopwatch.tick(Duration::from_secs_f32(1.0));
assert!(!stopwatch.paused());
assert_eq!(stopwatch.elapsed_secs(), 1.0);

pub fn paused(&self) -> bool

Returns true if the stopwatch is paused.

Examples

let mut stopwatch = Stopwatch::new();
assert!(!stopwatch.paused());
stopwatch.pause();
assert!(stopwatch.paused());
stopwatch.unpause();
assert!(!stopwatch.paused());

pub fn reset(&mut self)

Resets the stopwatch.

Examples

use std::time::Duration;
let mut stopwatch = Stopwatch::new();
stopwatch.tick(Duration::from_secs_f32(1.5));
stopwatch.reset();
assert_eq!(stopwatch.elapsed_secs(), 0.0);

Trait Implementations

impl Clone for Stopwatch

fn clone(&self) -> Stopwatch

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Stopwatch

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

Formats the value using the given formatter.

impl Default for Stopwatch

fn default() -> Stopwatch

Returns the “default value” for a type.