std.time

The std.time module provides access to the current runtime clock and basic sleep control.

Import

import std.time as time

API

Function	Signature	Description
`now_ms`	`func now_ms() -> i64`	Current time in milliseconds since epoch
`sleep_ms`	`func sleep_ms(ms: i64)`	Pause the current thread for at least `ms` milliseconds

Example

import std.time as time

func main() -> i32:
  let t = time.now_ms()
  return 0

now_ms returns i64. There is no string.from_i64 in the current standard library, so printing a timestamp directly is not supported without an intermediate cast. To compare timestamps, use arithmetic:

Timing elapsed duration

import std.time as time

func main() -> i32:
  let start = time.now_ms()
  let i: i32 = 0
  while (i < 1000000):
    i = i + 1
  let elapsed = time.now_ms() - start
  if (elapsed > 0):
    return 0
  return 1

Sleeping

import std.time as time

func main() -> i32:
  let start = time.now_ms()
  time.sleep_ms(25)
  let elapsed = time.now_ms() - start
  if (elapsed >= 10):
    return 0
  return 1

Full reference

Function	Signature	Description
`now_ms`	`func now_ms() -> i64`	milliseconds since epoch
`sleep_ms`	`func sleep_ms(ms: i64)`	sleep for at least `ms` milliseconds