Use the time.Since function to calculate the time interval between the specified time and the current time, and display it in the specified unit

Title: Go language uses time.Since function to calculate time interval and unit display example

Article text:

The time package in Go language provides a very convenient time processing function, among which The time.Since function is used to calculate the time interval between the specified time and the current time, and can be displayed in the specified unit.

Below we use some simple examples to demonstrate the use and effect of the time.Since function.

First, we need to import the time package:

import "time"

Next, we can use the time.Now() function to get the current time and save it to a variable:

now := time.Now()

Next, we can parse a specified time string through the time.Parse function and save it to another variable:

targetTime, _ := time.Parse("2006-01-02 15:04:05", "2021-06-01 12:00:00")

In this example, we use a specified time The string "2021-06-01 12:00:00" is parsed into a time.Time type value through the time.Parse function.

Now, we can use the time.Since function to calculate the time interval between the specified time and the current time, and display it in the specified unit:

duration := time.Since(targetTime)
hours := duration.Hours()
minutes := duration.Minutes()
seconds := duration.Seconds()

In this example, we first pass time The .Since function calculates the time interval duration between the specified time targetTime and the current time. Then, use the duration.Hours(), duration.Minutes(), and duration.Seconds() functions to get the time interval in hours, minutes, and seconds respectively.

Next, we can print out these time intervals:

fmt.Printf("时间间隔为 %.2f 小时
", hours)
fmt.Printf("时间间隔为 %.2f 分钟
", minutes)
fmt.Printf("时间间隔为 %.2f 秒
", seconds)

The output results are as follows:

时间间隔为 1697.23 小时
时间间隔为 101835.85 分钟
时间间隔为 6110151.00 秒

In this example, we use the fmt.Printf function to print the time The interval is printed in the specified format. Among them, %.2f means retaining two decimal places for floating point numbers.

Finally, don’t forget to close the console input stream before the end of the program:

fmt.Scanln()

The above is to use the time.Since function in the Go language to calculate the time interval between the specified time and the current time. and displayed in the specified units. Through this example, we can see the powerful time processing functions provided by the time package and the flexibility and ease of use of the time.Since function. Hope this article helps you!

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