Talk about the conversion method of golang duration

In Golang programming, it is often necessary to deal with time and duration (duration), so mastering the conversion method of duration is essential.

Duration in Golang is a data type that represents a period of time, and can be used to represent time units such as seconds, milliseconds, microseconds, and nanoseconds. In computer systems, time is usually expressed as a Unix timestamp, which is the number of seconds since "1970-01-01 00:00:00 UTC". Duration is a built-in type, defined as follows:

type Duration int64

It can be seen that duration is an alias of the int64 type, and its unit is nanoseconds, which means the length of a duration.

Duration conversion

During the development process, we often need to convert duration, such as converting milliseconds to duration, or converting duration to minutes, etc. Golang provides built-in time units for mutual conversion. These time units include nanoseconds, microseconds, milliseconds, seconds, minutes, hours, etc. We can use these time units and duration to convert. The following describes the conversion methods of these time units and duration.

Nanoseconds

Convert to duration

Converting nanoseconds to duration is very simple, just use the number of nanoseconds as the value of duration, for example:

var ns int64 = 1000000 // 1毫秒等于1000000纳秒
duration := time.Duration(ns)
fmt.Println(duration) // 打印结果为：1ms

Convert to nanoseconds

Converting duration to nanoseconds is also very simple, just call its Nans() method, for example:

duration := 1 * time.Millisecond
ns := duration.Nanoseconds()
fmt.Println(ns) // 打印结果为：1000000

Microseconds ( microseconds)

Convert to duration

To convert microseconds to duration, you can multiply the number of microseconds by 1000 and then use it as the value of duration, for example:

var us int64 = 1000 // 1毫秒等于1000微秒
duration := time.Duration(us * 1000)
fmt.Println(duration) // 打印结果为：1ms

Convert to microseconds

To convert duration to microseconds, you can call its Microseconds() method, for example:

duration := 1 * time.Millisecond
us := duration.Microseconds()
fmt.Println(us) // 打印结果为：1000

Milliseconds (milliseconds)

Convert to duration

To convert milliseconds to duration, you can use milliseconds as the value of duration, for example:

var ms int64 = 1
duration := time.Duration(ms) * time.Millisecond
fmt.Println(duration) // 打印结果为：1ms

Convert to milliseconds

To convert duration to milliseconds, you can call its Milliseconds( ) method, for example:

duration := 1 * time.Millisecond
ms := duration.Milliseconds()
fmt.Println(ms) // 打印结果为：1

seconds

convert to duration

Convert seconds to duration, you can use seconds as the value of duration, for example:

var s int64 = 1
duration := time.Duration(s) * time.Second
fmt.Println(duration) // 打印结果为：1s

Convert to seconds

To convert duration to seconds, you can call its Seconds() method, for example:

duration := 1 * time.Second
s := duration.Seconds()
fmt.Println(s) // 打印结果为：1

Minutes(minutes)

Conversion To convert minutes to duration for duration

, you can multiply the minutes by 60 and then use it as the value of duration, for example:

var m int64 = 1
duration := time.Duration(m * 60) * time.Second
fmt.Println(duration) // 打印结果为：1m0s

Convert to minutes

Convert duration To convert to minutes, you can call its Minutes() method, for example:

duration := 1 * time.Minute
m := duration.Minutes()
fmt.Println(m) // 打印结果为：1

Hours (hours)

Convert to duration

To convert hours to duration, you can convert the number of hours Multiply by 60, convert it to minutes, and then call the method to convert minutes to duration, for example:

var h int64 = 1
duration := time.Duration(h*60*60) * time.Second
fmt.Println(duration) // 打印结果为：1h0m0s

Convert to hours

To convert duration to hours, you can call it Hours() method, for example:

duration := 1 * time.Hour
h := duration.Hours()
fmt.Println(h) // 打印结果为：1

Summary

duration is often used to process time in Golang programming. Golang provides built-in time units to facilitate the conversion of duration. This article introduces the conversion method of time units such as nanoseconds, microseconds, milliseconds, seconds, minutes, hours, etc., and duration. These methods work not only for duration conversion, but also for time unit conversion. Proficient in these methods, you can more conveniently manipulate time and duration and improve programming efficiency.

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