How many ways are there to generate random numbers in golang?
There are many ways to generate random numbers. Here is a summary, so you can choose the appropriate one.
Method 1: Set the seed to generate a random number between 0-30000
func main(){
rand.Seed(time.Now().UnixNano())
num := rand.Intn(30000)
fmt.Println(num)
}Method 2: Generate a random number in the specified interval
func RandInt(min, max int) int {
if min >= max || min == 0 || max == 0 {
return max
}
return rand.Intn(max-min) + min
}
//调用
func main(){
num := RandInt(3,200)
fmt.Println(num)
}Method 3: Similar to Method 1
func main(){
r := rand.New(rand.NewSource(time.Now().UnixNano()))
n := r.Intn(3000)
fmt.Println(n)
}PHP Chinese website, there are a large number of free Golang introductory tutorials, everyone is welcome to learn!
The above is the detailed content of How many ways are there to generate random numbers in golang?. For more information, please follow other related articles on the PHP Chinese website!
The Performance Race: Golang vs. CApr 16, 2025 am 12:07 AMGolang and C each have their own advantages in performance competitions: 1) Golang is suitable for high concurrency and rapid development, and 2) C provides higher performance and fine-grained control. The selection should be based on project requirements and team technology stack.
Golang vs. C : Code Examples and Performance AnalysisApr 15, 2025 am 12:03 AMGolang is suitable for rapid development and concurrent programming, while C is more suitable for projects that require extreme performance and underlying control. 1) Golang's concurrency model simplifies concurrency programming through goroutine and channel. 2) C's template programming provides generic code and performance optimization. 3) Golang's garbage collection is convenient but may affect performance. C's memory management is complex but the control is fine.
Golang's Impact: Speed, Efficiency, and SimplicityApr 14, 2025 am 12:11 AMGoimpactsdevelopmentpositivelythroughspeed,efficiency,andsimplicity.1)Speed:Gocompilesquicklyandrunsefficiently,idealforlargeprojects.2)Efficiency:Itscomprehensivestandardlibraryreducesexternaldependencies,enhancingdevelopmentefficiency.3)Simplicity:
C and Golang: When Performance is CrucialApr 13, 2025 am 12:11 AMC is more suitable for scenarios where direct control of hardware resources and high performance optimization is required, while Golang is more suitable for scenarios where rapid development and high concurrency processing are required. 1.C's advantage lies in its close to hardware characteristics and high optimization capabilities, which are suitable for high-performance needs such as game development. 2.Golang's advantage lies in its concise syntax and natural concurrency support, which is suitable for high concurrency service development.
Golang in Action: Real-World Examples and ApplicationsApr 12, 2025 am 12:11 AMGolang excels in practical applications and is known for its simplicity, efficiency and concurrency. 1) Concurrent programming is implemented through Goroutines and Channels, 2) Flexible code is written using interfaces and polymorphisms, 3) Simplify network programming with net/http packages, 4) Build efficient concurrent crawlers, 5) Debugging and optimizing through tools and best practices.
Golang: The Go Programming Language ExplainedApr 10, 2025 am 11:18 AMThe core features of Go include garbage collection, static linking and concurrency support. 1. The concurrency model of Go language realizes efficient concurrent programming through goroutine and channel. 2. Interfaces and polymorphisms are implemented through interface methods, so that different types can be processed in a unified manner. 3. The basic usage demonstrates the efficiency of function definition and call. 4. In advanced usage, slices provide powerful functions of dynamic resizing. 5. Common errors such as race conditions can be detected and resolved through getest-race. 6. Performance optimization Reuse objects through sync.Pool to reduce garbage collection pressure.
Golang's Purpose: Building Efficient and Scalable SystemsApr 09, 2025 pm 05:17 PMGo language performs well in building efficient and scalable systems. Its advantages include: 1. High performance: compiled into machine code, fast running speed; 2. Concurrent programming: simplify multitasking through goroutines and channels; 3. Simplicity: concise syntax, reducing learning and maintenance costs; 4. Cross-platform: supports cross-platform compilation, easy deployment.
Why do the results of ORDER BY statements in SQL sorting sometimes seem random?Apr 02, 2025 pm 05:24 PMConfused about the sorting of SQL query results. In the process of learning SQL, you often encounter some confusing problems. Recently, the author is reading "MICK-SQL Basics"...
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
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
SublimeText3 Chinese version
Chinese version, very easy to use
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
Zend Studio 13.0.1
Powerful PHP integrated development environment
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
Atom editor mac version download
The most popular open source editor
