README
¶
go-lambda
Process data like functional programming
Install
go get github.com/chyroc/go-lambda
Usage
New
func ExampleNew() {
// new with string list
lambda.New([]string{"1", "2"})
// new with struct
lambda.New([]exampleItem{{Name: "Tom"}, {Name: "Harry"}})
}
Chunk
func ExampleObject_Chunk() {
// Split the list into shorter length lists
res, err := lambda.New([]int{1, 2, 3, 4, 5}).Chunk(2).ToIntListList()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [[1 2] [3 4] [5]]
}
Compact
func ExampleObject_Compact() {
// Remove 0-valued elements from the list
res, err := lambda.New([]int{0, 1, 2, 1, 0, 2}).Compact().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [1 2 1 2]
}
Flatten
func ExampleObject_Flatten() {
// Flatten the list
res, err := lambda.New([][]int{{1, 2}, {2, 3}, {4}}).Flatten().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [1 2 2 3 4]
}
Reverse
func ExampleObject_Reverse() {
// Reverse list
res, err := lambda.New([]int{1, 2, 3, 4}).Reverse().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [4 3 2 1]
}
Uniq
func ExampleObject_Uniq() {
// Remove duplicate elements in the list
res, err := lambda.New([]int{1, 2, 1, 3, 2, 3, 4}).Uniq().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [1 2 3 4]
}
MapArray
func ExampleObject_MapArray() {
// Traverse the elements of the list, and after each element is processed, the returned elements form a new list
res, err := lambda.New([]int{1, 2, 3}).MapArray(func(idx int, obj interface{}) interface{} {
return obj.(int) + 1
}).ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [2 3 4]
}
FilterArray
func ExampleObject_FilterArray() {
// Traverse the elements of the list, each element is added to a new list or not, and a new list is returned
res, err := lambda.New([]int{1, 2, 3, 4}).FilterArray(func(idx int, obj interface{}) bool {
return obj.(int)%2 == 0
}).ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
// output:
// err: <nil>
// res: [2 4]
}
Documentation
¶
Index ¶
- Variables
- type Object
- func (r *Object) Chunk(size int) *Object
- func (r *Object) Compact() *Object
- func (r *Object) EachArray(f func(idx int, obj interface{})) error
- func (r *Object) Error() error
- func (r *Object) FilterArray(f func(idx int, obj interface{}) bool) *Object
- func (r *Object) Flatten() *Object
- func (r *Object) GroupByArray(f func(idx int, obj interface{}) interface{}) *Object
- func (r *Object) IndexOf(obj interface{}) *Object
- func (r *Object) Join(sep string) (string, error)
- func (r *Object) MapArray(f func(idx int, obj interface{}) interface{}) *Object
- func (r *Object) MapArrayAsync(f func(idx int, obj interface{}) interface{}) *Object
- func (r *Object) MapArrayAsyncWithErr(f func(idx int, obj interface{}) (interface{}, error)) *Object
- func (r *Object) MapArrayWithErr(f func(idx int, obj interface{}) (interface{}, error)) *Object
- func (r *Object) Obj() (interface{}, error)
- func (r *Object) Reverse() *Object
- func (r *Object) String() (res string, err error)
- func (r *Object) ToBool() (bool, error)
- func (r *Object) ToBoolArray() (interface{}, error)
- func (r *Object) ToBoolSlice() ([]bool, error)
- func (r *Object) ToComplex128() (complex128, error)
- func (r *Object) ToComplex128Array() (interface{}, error)
- func (r *Object) ToComplex128Slice() ([]complex128, error)
- func (r *Object) ToComplex64() (complex64, error)
- func (r *Object) ToComplex64Array() (interface{}, error)
- func (r *Object) ToComplex64Slice() ([]complex64, error)
- func (r *Object) ToFloat32() (float32, error)
- func (r *Object) ToFloat32Array() (interface{}, error)
- func (r *Object) ToFloat32Slice() ([]float32, error)
- func (r *Object) ToFloat64() (float64, error)
- func (r *Object) ToFloat64Array() (interface{}, error)
- func (r *Object) ToFloat64Slice() ([]float64, error)
- func (r *Object) ToInt() (int, error)
- func (r *Object) ToInt16() (int16, error)
- func (r *Object) ToInt16Array() (interface{}, error)
- func (r *Object) ToInt16Slice() ([]int16, error)
- func (r *Object) ToInt32() (int32, error)
- func (r *Object) ToInt32Array() (interface{}, error)
- func (r *Object) ToInt32Slice() ([]int32, error)
- func (r *Object) ToInt64() (int64, error)
- func (r *Object) ToInt64Array() (interface{}, error)
- func (r *Object) ToInt64Slice() ([]int64, error)
- func (r *Object) ToInt8() (int8, error)
- func (r *Object) ToInt8Array() (interface{}, error)
- func (r *Object) ToInt8Slice() ([]int8, error)
- func (r *Object) ToIntArray() (interface{}, error)
- func (r *Object) ToIntListSlice() (res [][]int, err error)
- func (r *Object) ToIntSlice() ([]int, error)
- func (r *Object) ToInterfaceSlice() (res []interface{}, err error)
- func (r *Object) ToList(resp interface{}) (err error)
- func (r *Object) ToMapInt2Float64Slice() (res map[int][]float64, err error)
- func (r *Object) ToString() (string, error)
- func (r *Object) ToStringArray() (interface{}, error)
- func (r *Object) ToStringSlice() ([]string, error)
- func (r *Object) ToUint() (uint, error)
- func (r *Object) ToUint16() (uint16, error)
- func (r *Object) ToUint16Array() (interface{}, error)
- func (r *Object) ToUint16Slice() ([]uint16, error)
- func (r *Object) ToUint32() (uint32, error)
- func (r *Object) ToUint32Array() (interface{}, error)
- func (r *Object) ToUint32Slice() ([]uint32, error)
- func (r *Object) ToUint64() (uint64, error)
- func (r *Object) ToUint64Array() (interface{}, error)
- func (r *Object) ToUint64Slice() ([]uint64, error)
- func (r *Object) ToUint8() (uint8, error)
- func (r *Object) ToUint8Array() (interface{}, error)
- func (r *Object) ToUint8Slice() ([]uint8, error)
- func (r *Object) ToUintArray() (interface{}, error)
- func (r *Object) ToUintSlice() ([]uint, error)
- func (r *Object) Transfer(f func(obj interface{}) interface{}) *Object
- func (r *Object) Uniq() *Object
- func (r *Object) WithErr(err error) *Object
Examples ¶
Constants ¶
This section is empty.
Variables ¶
View Source
var ErrBreak = fmt.Errorf("break range")
Functions ¶
This section is empty.
Types ¶
type Object ¶
type Object struct {
// contains filtered or unexported fields
}
func New ¶
func New(obj interface{}) *Object
Example ¶
// new with string list
lambda.New([]string{"1", "2"})
// new with struct
lambda.New([]exampleItem{{Name: "Tom"}, {Name: "Harry"}})
func (*Object) Chunk ¶ added in v0.5.0
Example ¶
// Split the list into shorter length lists
res, err := lambda.New([]int{1, 2, 3, 4, 5}).Chunk(2).ToIntListSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
Output: err: <nil> res: [[1 2] [3 4] [5]]
func (*Object) Compact ¶ added in v0.5.0
Example ¶
// Remove 0-valued elements from the list
res, err := lambda.New([]int{0, 1, 2, 1, 0, 2}).Compact().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
Output: err: <nil> res: [1 2 1 2]
func (*Object) FilterArray ¶ added in v0.5.0
Example ¶
// Traverse the elements of the list, each element is added to a new list or not, and a new list is returned
res, err := lambda.New([]int{1, 2, 3, 4}).FilterArray(func(idx int, obj interface{}) bool {
return obj.(int)%2 == 0
}).ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
Output: err: <nil> res: [2 4]
func (*Object) Flatten ¶ added in v0.4.0
Example ¶
// Flatten the list
res, err := lambda.New([][]int{{1, 2}, {2, 3}, {4}}).Flatten().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
Output: err: <nil> res: [1 2 2 3 4]
func (*Object) GroupByArray ¶ added in v0.5.0
func (*Object) MapArray ¶ added in v0.5.0
Example ¶
// Traverse the elements of the list, and after each element is processed, the returned elements form a new list
res, err := lambda.New([]int{1, 2, 3}).MapArray(func(idx int, obj interface{}) interface{} {
return obj.(int) + 1
}).ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
Output: err: <nil> res: [2 3 4]
func (*Object) MapArrayAsync ¶ added in v0.6.0
func (*Object) MapArrayAsyncWithErr ¶ added in v0.6.0
func (*Object) MapArrayWithErr ¶ added in v0.6.0
func (*Object) Reverse ¶ added in v0.5.0
Example ¶
// Reverse list
res, err := lambda.New([]int{1, 2, 3, 4}).Reverse().ToIntSlice()
fmt.Println("err:", err)
fmt.Println("res:", res)
Output: err: <nil> res: [4 3 2 1]
func (*Object) ToBoolArray ¶ added in v0.7.0
func (*Object) ToBoolSlice ¶ added in v0.7.0
func (*Object) ToComplex128 ¶ added in v0.7.0
func (r *Object) ToComplex128() (complex128, error)
func (*Object) ToComplex128Array ¶ added in v0.7.0
func (*Object) ToComplex128Slice ¶ added in v0.7.0
func (r *Object) ToComplex128Slice() ([]complex128, error)
func (*Object) ToComplex64 ¶ added in v0.7.0
func (*Object) ToComplex64Array ¶ added in v0.7.0
func (*Object) ToComplex64Slice ¶ added in v0.7.0
func (*Object) ToFloat32Array ¶ added in v0.7.0
func (*Object) ToFloat32Slice ¶ added in v0.7.0
func (*Object) ToFloat64Array ¶ added in v0.7.0
func (*Object) ToFloat64Slice ¶ added in v0.7.0
func (*Object) ToInt16Array ¶ added in v0.7.0
func (*Object) ToInt16Slice ¶ added in v0.7.0
func (*Object) ToInt32Array ¶ added in v0.7.0
func (*Object) ToInt32Slice ¶ added in v0.7.0
func (*Object) ToInt64Array ¶ added in v0.7.0
func (*Object) ToInt64Slice ¶ added in v0.7.0
func (*Object) ToInt8Array ¶ added in v0.7.0
func (*Object) ToInt8Slice ¶ added in v0.7.0
func (*Object) ToIntArray ¶ added in v0.7.0
func (*Object) ToIntListSlice ¶ added in v0.7.0
func (*Object) ToIntSlice ¶ added in v0.7.0
func (*Object) ToInterfaceSlice ¶ added in v0.7.0
func (*Object) ToMapInt2Float64Slice ¶ added in v0.7.0
func (*Object) ToStringArray ¶ added in v0.7.0
func (*Object) ToStringSlice ¶ added in v0.7.0
func (*Object) ToUint16Array ¶ added in v0.7.0
func (*Object) ToUint16Slice ¶ added in v0.7.0
func (*Object) ToUint32Array ¶ added in v0.7.0
func (*Object) ToUint32Slice ¶ added in v0.7.0
func (*Object) ToUint64Array ¶ added in v0.7.0
func (*Object) ToUint64Slice ¶ added in v0.7.0
func (*Object) ToUint8Array ¶ added in v0.7.0
func (*Object) ToUint8Slice ¶ added in v0.7.0
func (*Object) ToUintArray ¶ added in v0.7.0
func (*Object) ToUintSlice ¶ added in v0.7.0
Source Files
¶
- chunk.go
- compact.go
- each_array.go
- error.go
- filter_array.go
- flatten.go
- group_by_array.go
- index_of.go
- internal_helper.go
- internal_objtype.go
- lambda.go
- map_array.go
- map_array_async.go
- response.go
- response_to_basic.go
- response_to_basic_array.go
- response_to_basic_slice.go
- response_to_list_2.go
- reverse.go
- transfer.go
- uniq.go
Directories
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