util

Documentation

Overview

Package util implements other tool more, like type cover, type value check.

Index

• Constants
• func DecT36(num int) string
• func DecT62(num int) string
• func ExtractArrUnique[T constraints.ValueIterable](count int, arr []T) []T
• func ExtractParam[T constraints.Equable](defValue T, args ...T) T
• func InQue(val any, que []any) int
• func InQueAny(que any, keys ...any) int
• func ListIndex[T constraints.Equable](list []T, value T) (index int)
• func ListNoRepeat[T constraints.Equable](list []T) []T
• func MapAssign[K constraints.KeyIterable, V constraints.ValueIterable](source map[K]V, more ...map[K]V) map[K]V
• func MapFilter[K constraints.KeyIterable, V constraints.ValueIterable](kv map[K]V, filter []K) map[K]V
• func MapGenByKv[K constraints.KeyIterable, V constraints.ValueIterable](keys []K, values []V) (kv map[K]V)
• func MapKeys[T constraints.KeyIterable, X constraints.ValueIterable](vMap map[T]X) (keys []T)
• func MapSlice[K constraints.KeyIterable, V constraints.ValueIterable](kv map[K]V, filter []K) map[K]V
• func MapToStructViaJson(mapValue any, structPtr any) error
• func MapValues[T constraints.KeyIterable, X constraints.KeyIterable](vMap map[T]X) (values []X)
• func NullDefault(value, def any) any
• func Round(num float64, b int) float64
• func SpendTimeDiff() func() time.Duration
• func StructToMap(value any, ignoreKeys ...string) map[string]any
• func StructToMapLStyle(value any, ignoreKeys ...string) map[string]any
• func StructToMapViaJson(value any, ignoreKeys ...string) map[string]any
• func ToMapLStyleIgnoreEmpty(value any, ignoreKeys ...string) map[string]any
• func TryAssignValue(src reflect.Value, tgt reflect.Value) bool
• func ValueNull(value any) bool
• type Decimal
  • func NewDec(dec int) *Decimal
  • func (d *Decimal) T16() string
  • func (d *Decimal) T2() string
  • func (d *Decimal) T32() string
  • func (d *Decimal) T36() string
  • func (d *Decimal) T62() string
  • func (d *Decimal) T8() string
  • func (d *Decimal) ToN(base int) string
• type Object
  • func (obj Object) Assign(target any, source any) any
  • func (obj Object) AssignCovert(target any, source any) any
  • func (obj Object) AssignMap(targetMap any, srcMapOrStruct any)
  • func (obj Object) Keys(value any) []string

Constants

const (
	// NumberStr 9+26+26+3
	NumberStr = "0123456789abcdefghijklmnopkrstuvwxyzABCDEFGHIJKLMNOPKRSTUVWXYZ+-="
	// N2 进制类型
	N2  = 2
	N8  = 8
	N16 = 16
	N32 = 32
	N36 = 36
	N62 = 62
)

@Date： 2018/12/12 0012 13:45 @Author: Joshua Conero @Name: 10 进制处理

Functions

func DecT36

func DecT36(num int) string

DecT36 Data conversion

func DecT62

func DecT62(num int) string

DecT62 Data conversion

func ExtractArrUnique

func ExtractArrUnique[T constraints.ValueIterable](count int, arr []T) []T

ExtractArrUnique extracting array elements with loss (non-repeatable) from an array

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func ExtractParam

func ExtractParam[T constraints.Equable](defValue T, args ...T) T

ExtractParam Extract indefinite parameters from functions and default code values Deprecated: please replace by `rock.ExtractParam`，will remove in future

func InQue

func InQue(val any, que []any) int

InQue exist value exist in array, if not exists will return -1

Deprecated: As of Go 1.16, this function simply calls rock.ListIndex.

func InQueAny

func InQueAny(que any, keys ...any) int

InQueAny Check keys if exist in Array Or Slice.

func ListIndex

func ListIndex[T constraints.Equable](list []T, value T) (index int)

ListIndex get index by search value from list

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func ListNoRepeat

func ListNoRepeat[T constraints.Equable](list []T) []T

ListNoRepeat filter duplicate elements in list

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func MapAssign

func MapAssign[K constraints.KeyIterable, V constraints.ValueIterable](source map[K]V, more ...map[K]V) map[K]V

MapAssign Merge multiple map parameters, where the same key value is the forward overwrite value.

And never return nil.

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func MapFilter

func MapFilter[K constraints.KeyIterable, V constraints.ValueIterable](kv map[K]V, filter []K) map[K]V

MapFilter use the keys of map to filter itself

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func MapGenByKv

func MapGenByKv[K constraints.KeyIterable, V constraints.ValueIterable](keys []K, values []V) (kv map[K]V)

MapGenByKv Create dictionary by key value pair array combination

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func MapKeys

func MapKeys[T constraints.KeyIterable, X constraints.ValueIterable](vMap map[T]X) (keys []T)

MapKeys Extract the key name array of the dictionary

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func MapSlice

func MapSlice[K constraints.KeyIterable, V constraints.ValueIterable](kv map[K]V, filter []K) map[K]V

MapSlice use the keys of map to slice itself

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func MapToStructViaJson

func MapToStructViaJson(mapValue any, structPtr any) error

MapToStructViaJson use the map value to set structPtr

func MapValues

func MapValues[T constraints.KeyIterable, X constraints.KeyIterable](vMap map[T]X) (values []X)

MapValues Extract the values name array of the dictionary

Deprecated: only as a copy, has been moved to package util/rock, later deleted

func NullDefault

func NullDefault(value, def any) any

NullDefault null value handler to default.

func Round

func Round(num float64, b int) float64

Round String method processing float equal length data specified digits

func SpendTimeDiff

func SpendTimeDiff() func() time.Duration

SpendTimeDiff Get the program spend time for any format.

func StructToMap

func StructToMap(value any, ignoreKeys ...string) map[string]any

StructToMap convert Struct field to by Map, support the Ptr

func StructToMapLStyle

func StructToMapLStyle(value any, ignoreKeys ...string) map[string]any

StructToMapLStyle convert Struct field to by Map and key is Lower style, key support `JSON.TAG`. Notice: reflect field num not contain inherit struct.

func StructToMapViaJson

func StructToMapViaJson(value any, ignoreKeys ...string) map[string]any

StructToMapViaJson convert map via json Marshal/Unmarshal StructToMapViaJson is slower than StructToMapLStyle by Benchmark

func ToMapLStyleIgnoreEmpty

func ToMapLStyleIgnoreEmpty(value any, ignoreKeys ...string) map[string]any

ToMapLStyleIgnoreEmpty convert Struct field to by Map and key is Lower style and ignore empty. StructToMapViaJson is slower than StructToMapLStyle by Benchmark

func TryAssignValue

func TryAssignValue(src reflect.Value, tgt reflect.Value) bool

TryAssignValue try assign value to another value.

func ValueNull

func ValueNull(value any) bool

ValueNull to find if is null

Types

type Decimal

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

func NewDec

func NewDec(dec int) *Decimal

NewDec decimal system

func (*Decimal) T16

func (d *Decimal) T16() string

T16 16 Base system

func (*Decimal) T2

func (d *Decimal) T2() string

T2 2 Base system

func (*Decimal) T32

func (d *Decimal) T32() string

T32 32 Base system

func (*Decimal) T36

func (d *Decimal) T36() string

T36 36 Base system

func (*Decimal) T62

func (d *Decimal) T62() string

func (*Decimal) T8

func (d *Decimal) T8() string

T8 8 Base system

func (*Decimal) ToN

func (d *Decimal) ToN(base int) string

ToN convert to n-ary

type Object

type Object struct {
}

func (Object) Assign

func (obj Object) Assign(target any, source any) any

Assign Base of `reflect` to come true like javascript `Object.Assign`, target should be pointer best. It can be Multiple, only for `reflect.Map`. And support nested struct. @todo 将使用 reflect 与 未使用reflect从包去区分开

func (Object) AssignCovert

func (obj Object) AssignCovert(target any, source any) any

AssignCovert Simple type automatic coverage, supporting cross type. So do not try to cover complex type. number covert any -> string string -> number

func (Object) AssignMap

func (obj Object) AssignMap(targetMap any, srcMapOrStruct any)

AssignMap Assign Map/Struct to map

func (Object) Keys

func (obj Object) Keys(value any) []string

Keys get keys from map or struct.

Notice: map keys maybe disorder.