In Golang, we can set and calculate dates very conveniently. In this article we will introduce in detail how to use Golang to set dates.
1. Date formatting
In Golang, we use the time package to set and process time. It contains a large number of date formatting methods, allowing us to easily perform date and time processing. formatted output.
Before setting the date format, we need to master some common date formats:
Date format | Instructions |
---|---|
2006 | Year |
01 | Month |
02 | Date |
15 | hour |
04 | Minutes |
05 | Seconds |
package main import ( "fmt" "time" ) func main() { // 获取当前时间 now := time.Now() // 输出当前时间的年月日 fmt.Println(now.Format("2006-01-02")) // 输出当前时间的小时:分钟:秒 fmt.Println(now.Format("15:04:05")) // 输出当前时间的年月日小时:分钟:秒 fmt.Println(now.Format("2006-01-02 15:04:05")) // 输出当前时间的星期几,例如:星期一 fmt.Println(now.Weekday().String()) // 输出当前时间的月份,例如:1月 fmt.Println(now.Month().String()) }Running results:
2021-08-15 22:08:30 2021-08-15 22:08:30 Sunday August2. Set the date In Golang, We can use the time package to set the date. There are several methods:
- Set the date through a string
package main import ( "fmt" "time" ) func main() { // 获取当前时间 now := time.Now() // 声明需要转换的时间字符串 str := "2021-08-16" // 将时间字符串转换为日期 t, err := time.Parse("2006-01-02", str) if err != nil { panic(err) } // 输出转换后的日期 fmt.Println(t) }Run result:
2021-08-16 00:00:00 +0000 UTC
- Set the date through parameters
package main import ( "fmt" "time" ) func main() { // 声明需要设置的年月日 year := 2021 month := time.January day := 16 // 获取当前时间 now := time.Now() // 构造需要设置的日期 t := time.Date(year, month, day, now.Hour(), now.Minute(), now.Second(), now.Nanosecond(), now.Location()) // 输出设置后的日期 fmt.Println(t) }Running result:
2021-01-16 22:19:22.610037702 +0800 CST m=+0.0001056633. Date calculation In Golang, we can calculate dates very conveniently, and the time package provides Add and Sub methods to implement date addition and subtraction operations, for example:
package main import ( "fmt" "time" ) func main() { // 获取当前时间 now := time.Now() // 计算3天前的时间 t := now.AddDate(0, 0, -3) // 输出计算后的日期 fmt.Println(t) }Running result:
2021-08-12 23:19:22.610037702 +0800 CST m=-259199.9998943374. Summary In this article, we introduced dates in Golang Setting methods, including date formatting, date setting and date calculation, etc., hope it will be helpful to everyone. In actual development, date setting is a very common operation, so it is very necessary for developers to master Golang's date setting method.
The above is the detailed content of golang set date. For more information, please follow other related articles on the PHP Chinese website!

Golangisidealforperformance-criticalapplicationsandconcurrentprogramming,whilePythonexcelsindatascience,rapidprototyping,andversatility.1)Forhigh-performanceneeds,chooseGolangduetoitsefficiencyandconcurrencyfeatures.2)Fordata-drivenprojects,Pythonisp

Golang achieves efficient concurrency through goroutine and channel: 1.goroutine is a lightweight thread, started with the go keyword; 2.channel is used for secure communication between goroutines to avoid race conditions; 3. The usage example shows basic and advanced usage; 4. Common errors include deadlocks and data competition, which can be detected by gorun-race; 5. Performance optimization suggests reducing the use of channel, reasonably setting the number of goroutines, and using sync.Pool to manage memory.

Golang is more suitable for system programming and high concurrency applications, while Python is more suitable for data science and rapid development. 1) Golang is developed by Google, statically typing, emphasizing simplicity and efficiency, and is suitable for high concurrency scenarios. 2) Python is created by Guidovan Rossum, dynamically typed, concise syntax, wide application, suitable for beginners and data processing.

Golang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.

Go language has unique advantages in concurrent programming, performance, learning curve, etc.: 1. Concurrent programming is realized through goroutine and channel, which is lightweight and efficient. 2. The compilation speed is fast and the operation performance is close to that of C language. 3. The grammar is concise, the learning curve is smooth, and the ecosystem is rich.

The main differences between Golang and Python are concurrency models, type systems, performance and execution speed. 1. Golang uses the CSP model, which is suitable for high concurrent tasks; Python relies on multi-threading and GIL, which is suitable for I/O-intensive tasks. 2. Golang is a static type, and Python is a dynamic type. 3. Golang compiled language execution speed is fast, and Python interpreted language development is fast.

Golang is usually slower than C, but Golang has more advantages in concurrent programming and development efficiency: 1) Golang's garbage collection and concurrency model makes it perform well in high concurrency scenarios; 2) C obtains higher performance through manual memory management and hardware optimization, but has higher development complexity.

Golang is widely used in cloud computing and DevOps, and its advantages lie in simplicity, efficiency and concurrent programming capabilities. 1) In cloud computing, Golang efficiently handles concurrent requests through goroutine and channel mechanisms. 2) In DevOps, Golang's fast compilation and cross-platform features make it the first choice for automation tools.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

SublimeText3 Linux new version
SublimeText3 Linux latest version

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 English version
Recommended: Win version, supports code prompts!

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.