util

Documentation

Overview

Package util provides a set of common functions

Package util provides utilities related to randomization.

Index

• Constants
• func EmptyThenDefault(val, defVal string) string
• func Expand(text string) (result []string)
• func Keys[T interface{}](data map[string]T) (keys []string)
• func MakeSureNotNil[T any](inter T) T
• func OKOrErrorMessage(err error) string
• func OrErrorMessage(err error, message string) string
• func PathExists(path string) (ok bool, err error)
• func String(n int) string
• func ZeroThenDefault(val, defVal int) int

Constants

const (
	ContentType       = "Content-Type"
	MultiPartFormData = "multipart/form-data"
	Form              = "application/x-www-form-urlencoded"
)

ContentType is the HTTP header key

Functions

func EmptyThenDefault

func EmptyThenDefault(val, defVal string) string

EmptyThenDefault return the default value if the val is empty

func Expand

func Expand(text string) (result []string)

Expand the text with brace syntax. Such as: /home/{good,bad} -> [/home/good, /home/bad]

func Keys

func Keys[T interface{}](data map[string]T) (keys []string)

Keys returns a list of keys

func MakeSureNotNil

func MakeSureNotNil[T any](inter T) T

MakeSureNotNil makes sure the parameter is not nil

func OKOrErrorMessage

func OKOrErrorMessage(err error) string

OKOrErrorMessage returns OK or error message

func OrErrorMessage

func OrErrorMessage(err error, message string) string

OrErrorMessage returns error message or message

func PathExists

func PathExists(path string) (ok bool, err error)

PathExists checks if the target path exist or not

func String

func String(n int) string

String generates a random alphanumeric string, without vowels, which is n characters long. This will panic if n is less than zero. How the random string is created: - we generate random int63's - from each int63, we are extracting multiple random letters by bit-shifting and masking - if some index is out of range of alphanums we neglect it (unlikely to happen multiple times in a row)

func ZeroThenDefault

func ZeroThenDefault(val, defVal int) int

ZeroThenDefault return the default value if the val is zero