a value meaning some number of nanoseconds
timestamp() → integer
Return time, in seconds, relative to UTC 1970-01-01.
Return-value is signed because it is possible to have dates before the epoch
timestamp_ms() → integer
Return time, in milliseconds, relative to UTC 1970-01-01.
Return-value is signed to allow for dates before the epoch.
sleep(nanosecond) → nil
Sleep for some duration of time measured in nanoseconds*.
Underlying implementation mentions that spurious wakeups are possible and that no precision of timing is guaranteed.
The number of nanoseconds per microsecond.
The number of nanoseconds per millisecond.
The number of nanoseconds per second.
The number of nanoseconds per minute.