gutil

原文:https://pkg.go.dev/github.com/gogf/gf/v2@v2.6.4/util/gutil

Overview 概述

Package gutil provides utility functions.

​ 软件包 gutil 提供实用函数。

常量

This section is empty.

变量

This section is empty.

函数

func ComparatorByte

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func ComparatorByte(a, b interface{}) int

ComparatorByte provides a basic comparison on byte.

​ ComparatorByte 提供了对字节的基本比较。

func ComparatorFloat32

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func ComparatorFloat32(a, b interface{}) int

ComparatorFloat32 provides a basic comparison on float32.

​ ComparatorFloat32 提供了对 float32 的基本比较。

func ComparatorFloat64

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func ComparatorFloat64(a, b interface{}) int

ComparatorFloat64 provides a basic comparison on float64.

​ ComparatorFloat64 提供了对 float64 的基本比较。

func ComparatorInt

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func ComparatorInt(a, b interface{}) int

ComparatorInt provides a basic comparison on int.

​ ComparatorInt 提供了对 int 的基本比较。

func ComparatorInt16

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func ComparatorInt16(a, b interface{}) int

ComparatorInt16 provides a basic comparison on int16.

​ ComparatorInt16 提供了对 int16 的基本比较。

func ComparatorInt32

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func ComparatorInt32(a, b interface{}) int

ComparatorInt32 provides a basic comparison on int32.

​ ComparatorInt32 提供了对 int32 的基本比较。

func ComparatorInt64

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func ComparatorInt64(a, b interface{}) int

ComparatorInt64 provides a basic comparison on int64.

​ ComparatorInt64 提供了对 int64 的基本比较。

func ComparatorInt8

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func ComparatorInt8(a, b interface{}) int

ComparatorInt8 provides a basic comparison on int8.

​ ComparatorInt8 提供了对 int8 的基本比较。

func ComparatorRune

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func ComparatorRune(a, b interface{}) int

ComparatorRune provides a basic comparison on rune.

​ ComparatorRune 提供了对符文的基本比较。

func ComparatorString

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func ComparatorString(a, b interface{}) int

ComparatorString provides a fast comparison on strings.

​ ComparatorString 提供字符串的快速比较。

func ComparatorTime

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func ComparatorTime(a, b interface{}) int

ComparatorTime provides a basic comparison on time.Time.

​ ComparatorTime 提供了基本的时间比较。时间。

func ComparatorUint

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func ComparatorUint(a, b interface{}) int

ComparatorUint provides a basic comparison on uint.

​ ComparatorUint 提供了对 uint 的基本比较。

func ComparatorUint16

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func ComparatorUint16(a, b interface{}) int

ComparatorUint16 provides a basic comparison on uint16.

​ ComparatorUint16 提供了对 uint16 的基本比较。

func ComparatorUint32

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func ComparatorUint32(a, b interface{}) int

ComparatorUint32 provides a basic comparison on uint32.

​ ComparatorUint32 提供了对 uint32 的基本比较。

func ComparatorUint64

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func ComparatorUint64(a, b interface{}) int

ComparatorUint64 provides a basic comparison on uint64.

​ ComparatorUint64 提供了对 uint64 的基本比较。

func ComparatorUint8

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func ComparatorUint8(a, b interface{}) int

ComparatorUint8 provides a basic comparison on uint8.

​ ComparatorUint8 提供了对 uint8 的基本比较。

func Copy <-2.1.0

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func Copy(src interface{}) (dst interface{})

Copy returns a deep copy of v.

​ Copy 返回 v 的深层副本。

Copy is unable to copy unexported fields in a struct (lowercase field names). Unexported fields can’t be reflected by the Go runtime and therefore they can’t perform any data copies.

​ Copy 无法复制结构中未导出的字段(小写字段名称)。Go 运行时无法反映未导出的字段,因此它们无法执行任何数据复制。

func Dump

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func Dump(values ...interface{})

Dump prints variables values to stdout with more manually readable.

​ 转储将变量打印 values 到 stdout,具有更多的手动可读性。

func DumpJson <-2.4.2

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func DumpJson(jsonContent string)

DumpJson pretty dumps json content to stdout.

​ DumpJson 漂亮地将 json 内容转储到 stdout。

func DumpTo

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func DumpTo(writer io.Writer, value interface{}, option DumpOption)

DumpTo writes variables values as a string in to writer with more manually readable

​ DumpTo 将 values 变量作为字符串写入 to writer ,具有更多的手动可读性

func DumpWithOption

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func DumpWithOption(value interface{}, option DumpOption)

DumpWithOption returns variables values as a string with more manually readable.

​ DumpWithOption values 以字符串形式返回变量,具有更多的手动可读性。

func DumpWithType

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func DumpWithType(values ...interface{})

DumpWithType acts like Dump, but with type information. Also see Dump.

​ DumpWithType 的行为类似于 Dump,但具有类型信息。另请参阅转储。

func FillStructWithDefault <-2.5.4

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func FillStructWithDefault(structPtr interface{}) error

FillStructWithDefault fills attributes of pointed struct with tag value from default/d tag . The parameter structPtr should be either type of *struct/[]*struct.

​ FillStructWithDefault 用 tag 中的 default/d 标记值填充指向结构的属性。参数 structPtr 应为 *struct/[]*struct 类型之一。

func GetOrDefaultAny <-2.2.0

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func GetOrDefaultAny(def interface{}, param ...interface{}) interface{}

GetOrDefaultAny checks and returns value according whether parameter param available. It returns param[0] if it is available, or else it returns def.

​ GetOrDefaultAny 根据参数 param 是否可用检查并返回值。如果它可用,它将返回 param[0] ,否则它将返回 def

func GetOrDefaultStr <-2.2.0

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func GetOrDefaultStr(def string, param ...string) string

GetOrDefaultStr checks and returns value according whether parameter param available. It returns param[0] if it is available, or else it returns def.

​ GetOrDefaultStr 根据参数 param 是否可用检查并返回值。如果它可用,它将返回 param[0] ,否则它将返回 def

func Go <-2.5.3

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func Go(
	ctx context.Context,
	goroutineFunc func(ctx context.Context),
	recoverFunc func(ctx context.Context, exception error),
)

Go creates a new asynchronous goroutine function with specified recover function.

​ Go 使用指定的 recover 函数创建一个新的异步 goroutine 函数。

The parameter recoverFunc is called when any panic during executing of goroutineFunc. If recoverFunc is given nil, it ignores the panic from goroutineFunc and no panic will throw to parent goroutine.

​ 当在执行 期间 goroutineFunc 出现任何恐慌时, recoverFunc 将调用该参数。如果 recoverFunc 给定 nil,它会忽略来自 goroutineFunc 的恐慌,并且不会向父 goroutine 抛出恐慌。

But, note that, if recoverFunc also throws panic, such panic will be thrown to parent goroutine.

​ 但是,请注意,如果 recoverFunc 也引发恐慌,这种恐慌将被抛给父 goroutine。

func IsEmpty

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func IsEmpty(value interface{}) bool

IsEmpty checks given value empty or not. It returns false if value is: integer(0), bool(false), slice/map(len=0), nil; or else returns true.

​ IsEmpty 检查是否为 value 空。如果 value 为 integer(0), bool(false), slice/map(len=0), nil,则返回 false;否则返回 true。

func IsTypeOf <-2.6.4

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func IsTypeOf(value, valueInExpectType interface{}) bool

IsTypeOf checks and returns whether the type of value and valueInExpectType equal.

​ IsTypeOf 检查并返回 和 value valueInExpectType 的类型是否相等。

func ItemValue

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func ItemValue(item interface{}, key interface{}) (value interface{}, found bool)

ItemValue retrieves and returns its value of which name/attribute specified by key. The parameter item can be type of map/*map/struct/*struct.

​ ItemValue 检索并返回其由 key 指定的名称/属性的值。参数 item 类型可以是 map/*map/struct/*struct。

func Keys

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func Keys(mapOrStruct interface{}) (keysOrAttrs []string)

Keys retrieves and returns the keys from given map or struct.

​ 键从给定的映射或结构中检索并返回键。

func ListItemValues

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func ListItemValues(list interface{}, key interface{}, subKey ...interface{}) (values []interface{})

ListItemValues retrieves and returns the elements of all item struct/map with key key. Note that the parameter list should be type of slice which contains elements of map or struct, or else it returns an empty slice.

​ ListItemValues 检索并返回所有项目 struct/map 的元素,并带有键 key 。请注意,该参数 list 应为包含 map 或 struct 元素的切片类型,否则它将返回一个空切片。

The parameter list supports types like: []map[string]interface{} []map[string]sub-map []struct []struct:sub-struct Note that the sub-map/sub-struct makes sense only if the optional parameter subKey is given.

​ 该参数 list 支持以下类型: []map[string]interface{} []map[string]sub-map []struct []struct:sub-struct 请注意,仅当给定可选参数 subKey 时,sub-map/sub-struct 才有意义。

func ListItemValuesUnique

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func ListItemValuesUnique(list interface{}, key string, subKey ...interface{}) []interface{}

ListItemValuesUnique retrieves and returns the unique elements of all struct/map with key key. Note that the parameter list should be type of slice which contains elements of map or struct, or else it returns an empty slice.

​ ListItemValuesUnique 检索并返回所有带有键 key 的结构/映射的唯一元素。请注意,该参数 list 应为包含 map 或 struct 元素的切片类型,否则它将返回一个空切片。

func ListToMapByKey

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func ListToMapByKey(list []map[string]interface{}, key string) map[string]interface{}

ListToMapByKey converts list to a map[string]interface{} of which key is specified by key. Note that the item value may be type of slice.

​ ListToMapByKey list 转换为 map[string]interface{},其键由 key 指定。请注意,项目值可以是切片类型。

func MapContains

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func MapContains(data map[string]interface{}, key string) (ok bool)

MapContains checks whether map data contains key.

​ MapContains 检查 map data 是否包含 key

func MapContainsPossibleKey

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func MapContainsPossibleKey(data map[string]interface{}, key string) bool

MapContainsPossibleKey checks if the given key is contained in given map data. It checks the key ignoring cases and symbols.

​ MapContainsPossibleKey 检查给定的地图中是否包含给定 key 的地图 data 。它检查键,忽略大小写和符号。

Note that this function might be of low performance.

​ 请注意,此函数的性能可能较低。

func MapCopy

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func MapCopy(data map[string]interface{}) (copy map[string]interface{})

MapCopy does a shallow copy from map data to copy for most commonly used map type map[string]interface{}.

​ MapCopy 对最常用的地图类型 map[string]interface{} 执行从 map 到 copydata 浅层复制。

func MapDelete

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func MapDelete(data map[string]interface{}, keys ...string)

MapDelete deletes all keys from map data.

​ MapDelete 从 map data 中删除所有 keys

func MapMerge

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func MapMerge(dst map[string]interface{}, src ...map[string]interface{})

MapMerge merges all map from src to map dst.

​ MapMerge 将所有 map 合并到 src map dst

func MapMergeCopy

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func MapMergeCopy(src ...map[string]interface{}) (copy map[string]interface{})

MapMergeCopy creates and returns a new map which merges all map from src.

​ MapMergeCopy 创建并返回一个新地图,该地图合并了 中的所有 src 地图。

func MapOmitEmpty

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func MapOmitEmpty(data map[string]interface{})

MapOmitEmpty deletes all empty values from given map.

​ MapOmitEmpty 从给定地图中删除所有空值。

func MapPossibleItemByKey

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func MapPossibleItemByKey(data map[string]interface{}, key string) (foundKey string, foundValue interface{})

MapPossibleItemByKey tries to find the possible key-value pair for given key ignoring cases and symbols.

​ MapPossibleItemByKey 尝试为给定的键查找可能的键值对,忽略大小写和符号。

Note that this function might be of low performance.

​ 请注意,此函数的性能可能较低。

func MapToSlice

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func MapToSlice(data interface{}) []interface{}

MapToSlice converts map to slice of which all keys and values are its items. Eg: {“K1”: “v1”, “K2”: “v2”} => [“K1”, “v1”, “K2”, “v2”]

​ MapToSlice 将 map 转换为 slice,其中所有键和值都是其项。例如: {“K1”: “v1”, “K2”: “v2”} => [“K1”, “v1”, “K2”, “v2”]

func SliceCopy

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func SliceCopy(slice []interface{}) []interface{}

SliceCopy does a shallow copy of slice data for most commonly used slice type []interface{}.

​ SliceCopy 对最常用的切片类型 []interface{} 执行切片 data 的浅拷贝。

func SliceDelete

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func SliceDelete(slice []interface{}, index int) (newSlice []interface{})

SliceDelete deletes an element at index and returns the new slice. It does nothing if the given index is invalid.

​ SliceDelete 删除元素 index 并返回新切片。如果给定 index 无效,则它不执行任何操作。

func SliceInsertAfter <-2.3.2

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func SliceInsertAfter(slice []interface{}, index int, values ...interface{}) (newSlice []interface{})

SliceInsertAfter inserts the values to the back of index and returns a new slice.

​ SliceInsertAfter 将 插入 values 到切 index 片的背面并返回一个新切片。

Example

func SliceInsertBefore <-2.3.2

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func SliceInsertBefore(slice []interface{}, index int, values ...interface{}) (newSlice []interface{})

SliceInsertBefore inserts the values to the front of index and returns a new slice.

​ SliceInsertBefore 将 插入 values 到前面 index 并返回一个新切片。

Example

func SliceToMap

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func SliceToMap(slice interface{}) map[string]interface{}

SliceToMap converts slice type variable slice to map[string]interface{}. Note that if the length of slice is not an even number, it returns nil. Eg: [“K1”, “v1”, “K2”, “v2”] => {“K1”: “v1”, “K2”: “v2”} [“K1”, “v1”, “K2”] => nil

​ SliceToMap 将切片类型变量 slice 转换为 map[string]interface{} 。请注意,如果 的 slice 长度不是偶数,则返回 nil。例如: [“K1”, “v1”, “K2”, “v2”] => {“K1”: “v1”, “K2”: “v2”} [“K1”, “v1”, “K2”] => nil

func SliceToMapWithColumnAsKey

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func SliceToMapWithColumnAsKey(slice interface{}, key interface{}) map[interface{}]interface{}

SliceToMapWithColumnAsKey converts slice type variable slice to map[interface{}]interface{} The value of specified column use as the key for returned map. Eg: SliceToMapWithColumnAsKey([{“K1”: “v1”, “K2”: 1}, {“K1”: “v2”, “K2”: 2}], “K1”) => {“v1”: {“K1”: “v1”, “K2”: 1}, “v2”: {“K1”: “v2”, “K2”: 2}} SliceToMapWithColumnAsKey([{“K1”: “v1”, “K2”: 1}, {“K1”: “v2”, “K2”: 2}], “K2”) => {1: {“K1”: “v1”, “K2”: 1}, 2: {“K1”: “v2”, “K2”: 2}}

​ SliceToMapWithColumnAsKey 将切片类型变量 slice 转换为 map[interface{}]interface{} 指定列的值,用作返回映射的键。例如: SliceToMapWithColumnAsKey([{“K1”: “v1”, “K2”: 1}, {“K1”: “v2”, “K2”: 2}], “K1”) => {“v1”: {“K1”: “v1”, “K2”: 1}, “v2”: {“K1”: “v2”, “K2”: 2}} SliceToMapWithColumnAsKey([{“K1”: “v1”, “K2”: 1}, {“K1”: “v2”, “K2”: 2}], “K2”) => {1: {“K1”: “v1”, “K2”: 1}, 2: {“K1”: “v2”, “K2”: 2}}

func StructToSlice

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func StructToSlice(data interface{}) []interface{}

StructToSlice converts struct to slice of which all keys and values are its items. Eg: {“K1”: “v1”, “K2”: “v2”} => [“K1”, “v1”, “K2”, “v2”]

​ StructToSlice 将 struct 转换为切片,其中所有键和值都是其项。例如: {“K1”: “v1”, “K2”: “v2”}=> [“K1”, “v1”, “K2”, “v2”]

func Throw

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func Throw(exception interface{})

Throw throws out an exception, which can be caught be TryCatch or recover.

​ Throw 抛出一个异常,可以被 TryCatch 捕获或恢复。

func Try

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func Try(ctx context.Context, try func(ctx context.Context)) (err error)

Try implements try… logistics using internal panic…recover. It returns error if any exception occurs, or else it returns nil.

​ 尝试实现尝试…物流使用内部恐慌…恢复。如果发生任何异常,它将返回错误,否则返回 nil。

func TryCatch

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func TryCatch(ctx context.Context, try func(ctx context.Context), catch func(ctx context.Context, exception error))

TryCatch implements try...catch... logistics using internal panic...recover. It automatically calls function catch if any exception occurs and passes the exception as an error. If catch is given nil, it ignores the panic from try and no panic will throw to parent goroutine.

​ TryCatch 实现 try...catch.. .物流使用内部 panic...recover .如果发生任何异常,它会自动调用函数 catch ,并将异常作为错误传递。如果 catch 给定 nil,它会忽略来自 try 的恐慌,并且不会向父 goroutine 抛出恐慌。

But, note that, if function catch also throws panic, the current goroutine will panic.

​ 但是,请注意,如果函数 catch 也引发恐慌,则当前的 goroutine 将恐慌。

func Values

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func Values(mapOrStruct interface{}) (values []interface{})

Values retrieves and returns the values from given map or struct.

​ Values 从给定的映射或结构中检索并返回值。

类型

type Comparator

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type Comparator func(a, b interface{}) int

Comparator is a function that compare a and b, and returns the result as int.

​ Comparator 是一个比较 a 和 b 的函数,并将结果返回为 int。

Should return a number:

​ 应返回一个数字:

negative , if a < b
zero     , if a == b
positive , if a > b

type DumpOption

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type DumpOption struct {
	WithType     bool // WithType specifies dumping content with type information.
	ExportedOnly bool // Only dump Exported fields for structs.
}

DumpOption specifies the behavior of function Export.

​ DumpOption 指定函数 Export 的行为。

type OriginTypeAndKindOutput <-2.3.0

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type OriginTypeAndKindOutput = reflection.OriginTypeAndKindOutput

func OriginTypeAndKind <-2.3.0

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func OriginTypeAndKind(value interface{}) (out OriginTypeAndKindOutput)

OriginTypeAndKind retrieves and returns the original reflect type and kind.

​ OriginTypeAndKind 检索并返回原始反射类型和种类。

type OriginValueAndKindOutput <-2.3.0

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type OriginValueAndKindOutput = reflection.OriginValueAndKindOutput

func OriginValueAndKind <-2.3.0

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func OriginValueAndKind(value interface{}) (out OriginValueAndKindOutput)

OriginValueAndKind retrieves and returns the original reflect value and kind.

​ OriginValueAndKind 检索并返回原始的 reflect 值和种类。

最后修改 March 29, 2024: 更新 (b5c9128)