util

Documentation

Index

• Variables
• func Decode(k, d []byte) string
• func FastRand() uint32
• func FastRandN(n int) uint32
• func FastUTF8Match(s, m string) bool

Variables

var (
	// All represents the string instruction set that contains all alpha-numeric characters.
	All set = [2]int{0, 62}
	// Upper represents the string instruction set that contains only uppercase non-numeric characters.
	Upper set = [2]int{26, 52}
	// Lower represents the string instruction set that contains only lowercase non-numeric characters.
	Lower set = [2]int{0, 26}
	// Numbers represents the string instruction set that contains only numeric characters.
	Numbers set = [2]int{52, 62}
	// Characters represents the string instruction set that contains mixed case non-numeric characters.
	Characters set = [2]int{0, 52}
)

var Rand = &random{Rand: rand.New(rand.NewSource(cputicks()))}

Rand is the custom Random number generator, based on the current time as a seed.

Functions

func Decode

func Decode(k, d []byte) string

Decode is used to un-encode a string written in a XOR byte array "encrypted" by the specified key. This function returns the string value of the result but also modifies the input array, which can be used to re-use the resulting string.

func FastRand

func FastRand() uint32

FastRand is a fast thread local random function. This should be used in place instead of 'Rand.Uint32()'.

Taken from https://github.com/dgraph-io/ristretto/blob/master/z/rtutil.go Thanks!

func FastRandN

func FastRandN(n int) uint32

FastRandN is a fast thread local random function. This should be used in place instead of 'Rand.Uint32n()'. This function will take a max value to specify.

func FastUTF8Match

func FastUTF8Match(s, m string) bool

FastUTF8Match is a function that will return true if both of the strings match regardless of case (case insensitive). This function ONLY works properly on UTF8 characters as the tradeoff for fastness.