Generate UUID in Different Languages

bash
uuidgen

                    
                        using System;using System.Net;using System.Security.Cryptography;public static class UUIDGenerator
{
    public static Guid GenerateTimeBasedGuid()
    {
        byte[] uuid = new byte[16];
        DateTime baseDate = new DateTime(1900, 1, 1);
        TimeSpan span = DateTime.Now - baseDate;
        byte[] time = BitConverter.GetBytes((long)(span.TotalMilliseconds * 10000L));
        byte[] clock = BitConverter.GetBytes((short)Environment.TickCount);
        byte[] node = new byte[6];
        RandomNumberGenerator.Create().GetBytes(node);
        
        Array.Copy(time, uuid, 8);
        Array.Copy(clock, 0, uuid, 8, 2);
        Array.Copy(node, 0, uuid, 10, 6);
        return new Guid(uuid);
    }
}

UUID v4:

csharp
using System;

public class Example
{
    public static void Main()
    {
        Guid uuid = Guid.NewGuid();
        Console.WriteLine(uuid);
    }
}

UUID v7: There is no built-in support for UUID v7 in C# yet. You might need to use a third-party library or manually implement it.

Delphi

Delphi lacks native UUID v1, v4, and v7 generation. However, you can use external libraries like JclSysUtils for v4.

Go

UUID v1:

go
import (
    "github.com/google/uuid"
)

func main() {
    uuid := uuid.NewUUID()
    fmt.Println(uuid)
}

UUID v4:

go
import (
    "github.com/google/uuid"
)

func main() {
    uuid := uuid.New()
    fmt.Println(uuid)
}

UUID v7: Currently, Go libraries like google/uuid do not support UUID v7. You might need a custom implementation.

Java

UUID v1:

java
import java.util.UUID;

public class Example {
    public static void main(String[] args) {
        // Use a library like `com.fasterxml.uuid` for UUID v1
    }
}

UUID v4:

java
import java.util.UUID;

public class Example {
    public static void main(String[] args) {
        UUID uuid = UUID.randomUUID();
        System.out.println(uuid);
    }
}

UUID v7: You might need an external library or custom implementation for UUID v7.

JavaScript

UUID v1:

javascript
const { v1: uuidv1 } = require('uuid');
console.log(uuidv1());

UUID v4:

javascript
const { v4: uuidv4 } = require('uuid');
console.log(uuidv4());

UUID v7: As of now, UUID v7 is not available in common libraries like uuid. You might need a custom implementation.

Kotlin

UUID v1:

kotlin
import com.fasterxml.uuid.Generators

fun main() {
    val uuid = Generators.timeBasedGenerator().generate()
    println(uuid)
}

UUID v4:

kotlin
import java.util.UUID

fun main() {
    val uuid = UUID.randomUUID()
    println(uuid)
}

UUID v7: Currently, there's no built-in support for UUID v7 in Kotlin.

PHP

UUID v1:

php
require 'vendor/autoload.php';
use Ramsey\Uuid\Uuid;

$uuid = Uuid::uuid1();
echo $uuid->toString();

UUID v4:

php
require 'vendor/autoload.php';
use Ramsey\Uuid\Uuid;

$uuid = Uuid::uuid4();
echo $uuid->toString();

UUID v7: Ramsey UUID library does not support UUID v7 yet.

Python

UUID v1:

python
import uuid
print(uuid.uuid1())

UUID v4:

python
import uuid
print(uuid.uuid4())

UUID v7: There is no native support for UUID v7 in the Python uuid library yet.

Ruby

UUID v1:

ruby
require 'uuidtools'
puts UUIDTools::UUID.timestamp_create

UUID v4:

ruby
require 'securerandom'
puts SecureRandom.uuid

UUID v7: No direct support in standard libraries.

Rust

UUID v1:

rust
use uuid::Uuid;

fn main() {
    let uuid = Uuid::new_v1();
    println!("{}", uuid);
}

UUID v4:

rust
use uuid::Uuid;

fn main() {
    let uuid = Uuid::new_v4();
    println!("{}", uuid);
}

UUID v7: UUID v7 is not yet supported in Rust's uuid crate.

TypeScript

UUID v1:

typescript
import { v1 as uuidv1 } from 'uuid';
console.log(uuidv1());

UUID v4:

typescript
import { v4 as uuidv4 } from 'uuid';
console.log(uuidv4());

UUID v7: UUID v7 is not supported in common libraries yet.

VB.NET

UUID v1:

vbnet
Imports System

Module Module1
    Sub Main()
        ' Use a library or manual implementation for UUID v1
    End Sub
End Module

UUID v4:

vbnet
Imports System

Module Module1
    Sub Main()
        Dim uuid As Guid = Guid.NewGuid()
        Console.WriteLine(uuid)
    End Sub
End Module

UUID v7: UUID v7 is not supported natively in VB.NET.

For some languages and UUID versions not directly supported, consider using third-party libraries or custom implementations.