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Documentation

Index

• Constants
• Variables
• func GenerateRandomBytes(n int) ([]byte, error)
• func GenerateRandomString(n int) (string, error)
• func GenerateRandomStringURLSafe(n int) (string, error)
• func GetCmdlineArg(long string, short string) string
• func GetCmdlineBool(long string, short string) bool
• func Lotto(cnt int, out int) []int
• func Shuffle(cnt int) []int
• func Shuffle0(s Interface)
• func Shuffle1(l []int, seed int64)
• type CryptoSrc
  • func (s CryptoSrc) Int63() int64
  • func (s CryptoSrc) Seed(seed int64)
  • func (s CryptoSrc) Uint64() (v uint64)
• type Interface

Constants

const Max_Bytes = 20 << 20 // 20MB

const SizeLimit = 20 * 1024 * 1024 // x MB

Variables

var (
	ColorReset = "\033[0m"

	ColorRed    = "\033[31m"
	ColorGreen  = "\033[32m"
	ColorYellow = "\033[33m"
	ColorBlue   = "\033[34m"
	ColorPurple = "\033[35m"
	ColorCyan   = "\033[36m"
	ColorWhite  = "\033[37m"
)

Functions

func GenerateRandomBytes

func GenerateRandomBytes(n int) ([]byte, error)

GenerateRandomBytes returns securely generated random bytes

func GenerateRandomString

func GenerateRandomString(n int) (string, error)

GenerateRandomString returns a securely generated random string

func GenerateRandomStringURLSafe

func GenerateRandomStringURLSafe(n int) (string, error)

returns a URL-safe, base64 encoded securely generated random string

func GetCmdlineArg

func GetCmdlineArg(long string, short string) string

func GetCmdlineBool

func GetCmdlineBool(long string, short string) bool

func Lotto

func Lotto(cnt int, out int) []int

func Shuffle

func Shuffle(cnt int) []int

func Shuffle0

func Shuffle0(s Interface)

Shuffle shuffles the data using the following algorithm:

To shuffle an array a of n elements (indices 0..n-1):
  for i from n − 1 downto 1 do
    j ← random integer with 0 ≤ j ≤ i
    exchange a[j] and a[i]

func Shuffle1

func Shuffle1(l []int, seed int64)

https://github.com/nobleach/go-fisher-yates-shuffle

Types

type CryptoSrc

type CryptoSrc struct{}

----- https://programming.guide/go/crypto-rand-int.html

func (CryptoSrc) Int63

func (s CryptoSrc) Int63() int64

func (CryptoSrc) Seed

func (s CryptoSrc) Seed(seed int64)

func (CryptoSrc) Uint64

func (s CryptoSrc) Uint64() (v uint64)

type Interface

type Interface interface {
	// Len is the number of elements in the collection.
	Len() int
	// Swap swaps the elements with indexes i and j.
	Swap(i, j int)
}

----- Fisher–Yates_Shuffle https://github.com/carlmjohnson/go-utils Type Interface is similar to a sort.Interface, but there's no Less method