mathutil

Documentation

Index

• Variables
• func DataSize(size uint64) string
• func ElapsedTime(startTime time.Time) string
• func Float(in interface{}) (float64, error)
• func FloatOrPanic(in interface{}) float64
• func HowLongAgo(sec int64) string
• func Int(in interface{}) (int, error)
• func Int64(in interface{}) (int64, error)
• func IntOrPanic(in interface{}) int
• func IsNumeric(c byte) bool
• func MustFloat(in interface{}) float64
• func MustInt(in interface{}) int
• func MustInt64(in interface{}) int64
• func MustString(val interface{}) string
• func MustUint(in interface{}) uint64
• func Percent(val, total int) float64
• func RandInt(min, max int) int
• func RandIntWithSeed(min, max int, seed int64) int
• func RandomInt(min, max int) int
• func RandomIntWithSeed(min, max int, seed int64) int
• func String(val interface{}) string
• func StringOrPanic(val interface{}) string
• func ToFloat(in interface{}) (f64 float64, err error)
• func ToInt(in interface{}) (iVal int, err error)
• func ToInt64(in interface{}) (i64 int64, err error)
• func ToString(val interface{}) (string, error)
• func ToUint(in interface{}) (u64 uint64, err error)
• func TryToString(val interface{}, defaultAsErr bool) (str string, err error)
• func Uint(in interface{}) (uint64, error)

Variables

var (
	// ErrConvertFail convert error
	ErrConvertFail = errors.New("convert data type is failure")
)

Functions

func DataSize

func DataSize(size uint64) string

DataSize format value. alias format.DataSize()

func ElapsedTime

func ElapsedTime(startTime time.Time) string

ElapsedTime calc elapsed time 计算运行时间消耗 单位 ms(毫秒)

func Float

func Float(in interface{}) (float64, error)

Float convert value to float64

func FloatOrPanic

func FloatOrPanic(in interface{}) float64

FloatOrPanic convert value to float64, will panic on error

func HowLongAgo

func HowLongAgo(sec int64) string

HowLongAgo calc time. alias format.HowLongAgo()

func Int

func Int(in interface{}) (int, error)

Int convert value to int

func Int64

func Int64(in interface{}) (int64, error)

Int64 convert string to int64

func IntOrPanic

func IntOrPanic(in interface{}) int

IntOrPanic convert value to int, will panic on error

func IsNumeric

func IsNumeric(c byte) bool

IsNumeric returns true if the given character is a numeric, otherwise false.

func MustFloat

func MustFloat(in interface{}) float64

MustFloat convert value to float64 TODO will panic on error

func MustInt

func MustInt(in interface{}) int

MustInt convert value to int

func MustInt64

func MustInt64(in interface{}) int64

MustInt64 convert

func MustString

func MustString(val interface{}) string

MustString convert intX/floatX value to string, will panic on error

func MustUint

func MustUint(in interface{}) uint64

MustUint convert string to uint

func Percent

func Percent(val, total int) float64

Percent returns a values percent of the total

func RandInt

func RandInt(min, max int) int

RandInt alias of RandomInt()

func RandIntWithSeed

func RandIntWithSeed(min, max int, seed int64) int

RandIntWithSeed alias of RandomIntWithSeed()

func RandomInt

func RandomInt(min, max int) int

RandomInt return a random int at the [min, max)

Usage:

RandomInt(10, 99)
RandomInt(100, 999)
RandomInt(1000, 9999)

func RandomIntWithSeed

func RandomIntWithSeed(min, max int, seed int64) int

RandomIntWithSeed return a random int at the [min, max)

Usage:

seed := time.Now().UnixNano()
RandomIntWithSeed(1000, 9999, seed)

func String

func String(val interface{}) string

String convert intX/floatX value to string, other type convert by fmt.Sprint

func StringOrPanic

func StringOrPanic(val interface{}) string

StringOrPanic convert intX/floatX value to string, will panic on error

func ToFloat

func ToFloat(in interface{}) (f64 float64, err error)

ToFloat convert value to float64

func ToInt

func ToInt(in interface{}) (iVal int, err error)

ToInt convert string to int

func ToInt64

func ToInt64(in interface{}) (i64 int64, err error)

ToInt64 convert string to int64

func ToString

func ToString(val interface{}) (string, error)

ToString convert intX/floatX value to string

func ToUint

func ToUint(in interface{}) (u64 uint64, err error)

ToUint convert string to uint

func TryToString

func TryToString(val interface{}, defaultAsErr bool) (str string, err error)

TryToString try convert intX/floatX value to string

if defaultAsErr is False, will use fmt.Sprint convert other type

func Uint

func Uint(in interface{}) (uint64, error)

Uint convert string to uint