//! Temporal quantification.
//!
//! # Examples:
//!
//! There are multiple ways to create a new [`Duration`]:
//!
//! ```
//! # use std::time::Duration;
//! let five_seconds = Duration::from_secs(5);
//! assert_eq!(five_seconds, Duration::from_millis(5_000));
//! assert_eq!(five_seconds, Duration::from_micros(5_000_000));
//! assert_eq!(five_seconds, Duration::from_nanos(5_000_000_000));
//!
//! let ten_seconds = Duration::from_secs(10);
//! let seven_nanos = Duration::from_nanos(7);
//! let total = ten_seconds + seven_nanos;
//! assert_eq!(total, Duration::new(10, 7));
//! ```
//!
//! Using [`Instant`] to calculate how long a function took to run:
//!
//! ```ignore (incomplete)
//! let now = Instant::now();
//!
//! // Calling a slow function, it may take a while
//! slow_function();
//!
//! let elapsed_time = now.elapsed();
//! println!("Running slow_function() took {} seconds.", elapsed_time.as_secs());
//! ```
pub use Duration;
pub use Instant;
pub use SystemTime;
pub use SystemTimeError;
pub use UNIX_EPOCH;