random

Documentation

Index

• Variables
• func Int(min, max int64) int64
• func NewUUID() string
• func String(length int) string
• func Uint32() uint32
• type Snowflake
  • func NewSnowflake(workerID uint32) (*Snowflake, error)
  • func (snowflake *Snowflake) UUID() (uint64, error)

Variables

var (
	// ErrWorkerID 无效的 workerID，取值范围 [0, maxWorkerID]
	ErrWorkerID = errors.New("bad worker id")
	// ErrTimeBackward 时间倒退，当前时间比上一次记录的时间还要小
	ErrTimeBackward = errors.New("time backward")
)

Functions

func Int

func Int(min, max int64) int64

Int 获取指定范围内的整数

func NewUUID

func NewUUID() string

NewUUID 全局唯一标识符，12byte 基于时间戳，主机信息，进程 ID 生成，每次调用值加 1，具有原子性 eg: NewUUID() -> 5cb840f90a5dcd71e779ba64 eg: NewUUID() -> 5cb840f90a5dcd71e779ba65

func String

func String(length int) string

String 获取指定长度的字符串

func Uint32

func Uint32() uint32

Uint32 获取随机数，类型为 uint32

Types

type Snowflake

type Snowflake struct {
	// contains filtered or unexported fields
}

Snowflake 用来生成 uuid 的工具

func NewSnowflake

func NewSnowflake(workerID uint32) (*Snowflake, error)

NewSnowflake ..

func (*Snowflake) UUID

func (snowflake *Snowflake) UUID() (uint64, error)

UUID 获取 uuid