api

package
v1.11.1 Latest Latest
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 Go to latest Published: Sep 15, 2023 License: Apache-2.0 Imports: 20 Imported by: 48

Documentation

Index

Constants

View Source 
const (
	// CACHE_DIR_MODE 目录权限
	CACHE_DIR_MODE os.FileMode = 0755
	// CACHE_FILE_MODE 文件权限
	CACHE_FILE_MODE os.FileMode = 0644

	// DEBUG 调试开关
	DEBUG = false
	// CACHE_REPLACE 文件替换模式, 会用到os.TRUNC
	CACHE_REPLACE = os.O_CREATE | os.O_RDWR | os.O_TRUNC
	// CACHE_UPDATE 更新
	CACHE_UPDATE = os.O_CREATE | os.O_WRONLY
)
View Source 
const (
	DefaultTagName = "dataframe"
)
View Source 
const (
	IGNORE_FLOAT = true
)
View Source 
const (
	YearOnly = "2006" // 日期格式仅输出"年"
)

Variables

View Source 
var (
	ErrInvalidCopyDestination = errors.New("copy destination is invalid")
	ErrInvalidCopyFrom        = errors.New("copy from is invalid")
	ErrMapKeyNotMatch         = errors.New("map's key type doesn't match")
	ErrNotSupported           = errors.New("not supported")
)

Functions

func Bytes2String 

func Bytes2String(b []byte) string

Bytes2String 字节数组转字符串

func ChanIsClosed 

func ChanIsClosed(ch any) bool

ChanIsClosed 判断channel是否关闭

func CheckFilepath 

func CheckFilepath(filename string, notExistToCreate ...bool) error

CheckFilepath 

检查filename 文件路径, 如果不存在就创建

func CloseQuietly 

func CloseQuietly(closer io.Closer)

CloseQuietly 关闭io, 忽略错误

func Convert 

func Convert[T any](data []string, v *T) error

Convert 将字符串数组按照下标的序号反射给一个结构体

func Copy 

func Copy[T any, S any](to *T, from *S) (err error)

Copy copy things

func CopyWithOption 

func CopyWithOption(toValue interface{}, fromValue interface{}, opt Option) (err error)

CopyWithOption copy with option

func CsvToSlices added in v1.6.7 

func CsvToSlices[S ~[]E, E any](filename string, pointer *S) error

CsvToSlices CSV文件转struct切片

func DateZero added in v1.6.1 

func DateZero(t time.Time) time.Time

DateZero t 的0点0分0秒

func DifferDays added in v1.6.1 

func DifferDays(t1, t2 time.Time) int

DifferDays 计算天数差 

从 t1 回到 t2 需要多少天

func EndsWith 

func EndsWith(str string, suffixes []string) bool

EndsWith 字符串前缀判断

func FileExist added in v1.6.8 

func FileExist(path string) bool

FileExist 路径是否存在

func FileIsValid added in v1.6.8 

func FileIsValid(path string) bool

FileIsValid 检查文件是否有效

func Filter 

func Filter[S ~[]E, E any](slice S, condition func(E) bool) S

Filter slice过滤

func Float64s 

func Float64s(a *[]float64)

Float64s removes duplicate elements from a sorted slice of float64s.

func Float64sAreUnique 

func Float64sAreUnique(a []float64) bool

Float64sAreUnique tests whether a slice of float64s is sorted and its elements are unique.

func GetMonthDay added in v1.6.1 

func GetMonthDay(date ...string) (string, string)

GetMonthDay 获得当前月的初始和结束日期

func GetQuarterByDate added in v1.7.6 

func GetQuarterByDate(date string, diffQuarters ...int) (quarter, first, last string)

GetQuarterByDate 通过给定的日期 获得日期所在财报的季度、初始以及结束日期 

diffQuarters 季度偏移数, 大于0前移diffQuarters个季度, 小于0后移diffQuarters个季度, 默认为当前季度

func GetQuarterDay added in v1.6.1 

func GetQuarterDay(months ...int) (string, string)

GetQuarterDay 获得当前季度的初始和结束日期

func GetQuarterDayByDate added in v1.7.4 

func GetQuarterDayByDate(date string, diffQuarters ...int) (firstOfQuarter, lastOfQuarter string)

GetQuarterDayByDate 通过给定的日期 获得日期所在上一个季度的初始和结束日期 

diffQuarters 季度偏移数, 大于0前移diffQuarters个季度, 小于0后移diffQuarters个季度, 默认为当前季度

func GetWeekDay added in v1.6.1 

func GetWeekDay(date ...string) (string, string)

GetWeekDay 获得当前周的初始和结束日期

func Ints 

func Ints(a *[]int)

Ints removes duplicate elements from a sorted slice of ints.

func IntsAreUnique 

func IntsAreUnique(a []int) bool

IntsAreUnique tests whether a slice of ints is sorted and its elements are unique.

func IsEmpty 

func IsEmpty(s string) bool

IsEmpty Code to test if string is empty

func IsUniqued 

func IsUniqued(data sort.Interface) bool

IsUniqued reports whether the elements in data are sorted and unique.

func IsWorkday added in v1.6.1 

func IsWorkday(t time.Time) bool

IsWorkday 是否工作日

func KebabCase 

func KebabCase(s string) string

KebabCase converts a string into kebab case.

func LowerCamelCase 

func LowerCamelCase(s string) string

LowerCamelCase converts a string into camel case starting with a lower case letter.

func ParseFloat 

func ParseFloat(s string) float64

func ParseInt 

func ParseInt(s string) int64

func ParseTime added in v1.6.1 

func ParseTime(timestr string) (time.Time, error)

ParseTime 解析时间差

func ParseUint 

func ParseUint(s string) uint64

func Reverse 

func Reverse[S ~[]E, E any](s S) S

Reverse 反转切片

func SliceSort added in v1.6.5 

func SliceSort[S ~[]E, E any](slice S, less func(a, b E) bool)

SliceSort slice排序

func SliceUnique added in v1.6.5 

func SliceUnique[S ~[]E, E any](slice S, compare func(a E, b E) int) S

func SlicesToCsv added in v1.6.7 

func SlicesToCsv[S ~[]E, E any](filename string, s S) error

SlicesToCsv struct切片转csv文件

func SnakeCase 

func SnakeCase(s string) string

SnakeCase converts a string into snake case.

func Sort 

func Sort(data Interface)

Sort sorts and removes duplicate entries from data.

func StartsWith 

func StartsWith(str string, prefixes []string) bool

StartsWith 字符串前缀判断

func String2Bytes 

func String2Bytes(s string) []byte

String2Bytes 字符串转字节数组

func Strings 

func Strings(a *[]string)

Strings removes duplicate elements from a sorted slice of strings.

func StringsAreUnique 

func StringsAreUnique(a []string) bool

StringsAreUnique tests whether a slice of strings is sorted and its elements are unique.

func ToCamelCase 

func ToCamelCase(kebab string) (camelCase string)

ToCamelCase 转驼峰

func ToFront 

func ToFront(data sort.Interface) (n int)

ToFront reports the number of unique elements of data which it moves to the first n positions. It assumes sort.IsSorted(data).

func ToString 

func ToString(value interface{}) string

ToString converts a value to string.

func Unique 

func Unique(data Interface)

Unique removes duplicate elements from data. It assumes sort.IsSorted(data).

func UpperCamelCase 

func UpperCamelCase(s string) string

UpperCamelCase converts a string into camel case starting with a upper case letter.

func UpperKebabCase 

func UpperKebabCase(s string) string

UpperKebabCase converts a string into kebab case with capital letters.

func UpperSnakeCase 

func UpperSnakeCase(s string) string

UpperSnakeCase converts a string into snake case with capital letters.

Types

type Float64Slice 

type Float64Slice struct{ P *[]float64 }

Float64Slice attaches the methods of Interface to []float64.

func (Float64Slice) Len 

func (p Float64Slice) Len() int

func (Float64Slice) Less 

func (p Float64Slice) Less(i, j int) bool

func (Float64Slice) Swap 

func (p Float64Slice) Swap(i, j int)

func (Float64Slice) Truncate 

func (p Float64Slice) Truncate(n int)

type IntSlice 

type IntSlice struct{ P *[]int }

IntSlice attaches the methods of Interface to []int.

func (IntSlice) Len 

func (p IntSlice) Len() int

func (IntSlice) Less 

func (p IntSlice) Less(i, j int) bool

func (IntSlice) Swap 

func (p IntSlice) Swap(i, j int)

func (IntSlice) Truncate 

func (p IntSlice) Truncate(n int)

type Interface 

type Interface interface {
	sort.Interface

	// Truncate reduces the length to the first n elements.
	Truncate(n int)
}

Interface Types that implement unique.Interface can have duplicate elements removed by the functionality in this package.

type Option 

type Option struct {
	// setting this value to true will ignore copying zero values of all the fields, including bools, as well as a
	// struct having all it's fields set to their zero values respectively (see IsZero() in reflect/value.go)
	IgnoreEmpty bool
	DeepCopy    bool
}

Option sets copy options

type ScopeLimit added in v1.7.0 

type ScopeLimit struct {
	Start *int
	End   *int
}

ScopeLimit is used to specify a range. Both Start and End are inclusive. A nil value means no limit, so a Start of nil means 0 and an End of nil means no limit. The End value must always be equal to or larger than Start. Negative values are acceptable. A value of -2 means the second last row.

func IntsToRanges added in v1.7.0 

func IntsToRanges(ints []int) []ScopeLimit

IntsToRanges will convert an already (ascending) ordered list of ints to a slice of Ranges.

Example: 

import "sort"
ints := []int{2,4,5,6,8,10,11,45,46}
sort.Ints(ints)

fmt.Println(IntsToRanges(ints))
// Output: R{2,2}, R{4,6}, R{8,8}, R{10,11}, R{45,46}

func RangeFinite added in v1.7.0 

func RangeFinite(start int, end ...int) ScopeLimit

RangeFinite returns a ScopeLimit that has a finite span.

func (*ScopeLimit) Limits added in v1.7.0 

func (r *ScopeLimit) Limits(length int) (s int, e int, _ error)

Limits is used to return the start and end limits of a ScopeLimit object for a given Dataframe or Series with length number of rows.

func (*ScopeLimit) NRows added in v1.7.0 

func (r *ScopeLimit) NRows(length ...int) (int, error)

NRows returns the number of rows contained by ScopeLimit. If End is nil, then length must be provided.

func (ScopeLimit) String added in v1.7.0 

func (r ScopeLimit) String() string

String implements Stringer interface.

type StringSlice 

type StringSlice struct{ P *[]string }

StringSlice attaches the methods of Interface to []string.

func (StringSlice) Len 

func (p StringSlice) Len() int

func (StringSlice) Less 

func (p StringSlice) Less(i, j int) bool

func (StringSlice) Swap 

func (p StringSlice) Swap(i, j int)

func (StringSlice) Truncate 

func (p StringSlice) Truncate(n int)

Source Files

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