![]() ![]() That difference will be visible when printing t.String() and u.String(). If t != u because of different monotonic clock readings, See theĭocumentation for the Time type for a discussion of equalityįor debugging, the result of t.String does include the monotonicĬlock reading if present. Note that the Go = operator compares not just the time instant butĪlso the Location and the monotonic clock reading. It is notĪ part of Duration values or the Unix times returned by t.Unix and The monotonic clock reading exists only in Time values. T.UnmarshalJSON, and t.UnmarshalText always create times with Similarly, theĬonstructors time.Date, time.Parse, time.ParseInLocation, and time.Unix,Īs well as the unmarshalers t.GobDecode, t.UnmarshalBinary. ![]() T.MarshalBinary, t.MarshalJSON, and t.MarshalText omit the monotonicĬlock reading, and t.Format provides no format for it. The current process, the serialized forms generated by t.GobEncode, On such a system, t.Sub(u) may not accurately reflect the actualīecause the monotonic clock reading has no meaning outside On some systems the monotonic clock will stop if the computer goes to sleep. Operations fall back to using the wall clock readings. If either t or u contains no monotonic clock reading, these Using the monotonic clock readings alone, ignoring the wall clock T.After(u), t.Before(u), t.Equal(u), t.Compare(u), and t.Sub(u) are carried out If Times t and u both contain monotonic clock readings, the operations The canonical way to strip a monotonic clock reading is to use t = t.Round(0). ![]() Of the wall time, they also strip any monotonic clock reading from their results. If Time t has a monotonic clock reading, t.Add adds the same duration toīoth the wall clock and monotonic clock readings to compute the result.īecause t.AddDate(y, m, d), t.Round(d), and t.Truncate(d) are wall timeĬomputations, they always strip any monotonic clock reading from their results.īecause t.In, t.Local, and t.UTC are used for their effect on the interpretation The Time returned by time.Now contains a monotonic clock reading. Use monotonic clocks, but understanding those details is not required The rest of this section gives the precise details of how operations Time.Now().Before(deadline), are similarly robust against wall clock Other idioms, such as time.Since(start), time.Until(deadline), and Operations, specifically comparisons and subtractions, use theįor example, this code always computes a positive elapsed time ofĪpproximately 20 milliseconds, even if the wall clock is changed during Operations use the wall clock reading, but later time-measuring In this package the Time returned by time.Now contains both a wallĬlock reading and a monotonic clock reading later time-telling The monotonic clock is for measuring time. The general rule is that the wall clock is for telling time and Operating systems provide both a “wall clock,” which is subject toĬhanges for clock synchronization, and a “monotonic clock,” which is The calendrical calculations always assume a Gregorian calendar, with Package time provides functionality for measuring and displaying time. ![]()
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