添加一个简单的 Stream 处理器,可恶不支持泛型方法

This commit is contained in:
xing 2023-01-16 14:38:55 +08:00
parent 7a8a02e16f
commit 51f0179ca5
7 changed files with 563 additions and 2 deletions

View File

@ -2,7 +2,7 @@ package helper
import "encoding/json"
func MapToStruct[T any](m map[string]any) (r T, err error) {
func MapToStruct[T any, M any](m M) (r T, err error) {
str, err := json.Marshal(m)
if err != nil {
return
@ -30,3 +30,22 @@ func MapToSlice[T any, K comparable, V any](m map[K]V, fn func(K, V) (T, bool))
}
return
}
func MapAnyToString(m map[any]any) (r map[string]any) {
r = make(map[string]any)
for k, v := range m {
kk, ok := k.(string)
if ok {
vv, ok := v.(map[any]any)
if ok {
x := make(map[string]any)
MapAnyToString(vv)
r[kk] = x
} else {
r[kk] = v
}
}
}
return
}

View File

@ -8,6 +8,16 @@ func SliceMap[T, R any](arr []T, fn func(T) R) []R {
return r
}
func SliceFilterAndMap[N any, T any](arr []T, fn func(T) (N, bool)) (r []N) {
for _, t := range arr {
x, ok := fn(t)
if ok {
r = append(r, x)
}
}
return
}
func SliceFilter[T any](arr []T, fn func(T) bool) []T {
var r []T
for _, t := range arr {
@ -18,7 +28,7 @@ func SliceFilter[T any](arr []T, fn func(T) bool) []T {
return r
}
func SliceReduce[T, R any](arr []T, fn func(T, R) R, r R) R {
func SliceReduce[R, T any](arr []T, fn func(T, R) R, r R) R {
for _, t := range arr {
r = fn(t, r)
}

View File

@ -477,3 +477,45 @@ func TestSliceSelfReverse(t *testing.T) {
})
}
}
func TestSliceFilterAndMap(t *testing.T) {
type a struct {
x int
y string
}
type args[T any, N any] struct {
arr []T
fn func(T) (N, bool)
}
type testCase[T any, N any] struct {
name string
args args[T, N]
wantR []N
}
tests := []testCase[a, string]{
{
name: "t1",
args: args[a, string]{
arr: []a{
{1, "1"}, {2, "2"}, {3, "3"},
},
fn: func(t a) (r string, ok bool) {
if t.x > 2 {
r = t.y
ok = true
}
return
},
},
wantR: []string{"3"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if gotR := SliceFilterAndMap[string](tt.args.arr, tt.args.fn); !reflect.DeepEqual(gotR, tt.wantR) {
t.Errorf("SliceFilterAndMap() = %v, want %v", gotR, tt.wantR)
}
})
}
}

22
safety/slice.go Normal file
View File

@ -0,0 +1,22 @@
package safety
import "sync"
type Slice[T any] struct {
Var[[]T]
mu sync.Mutex
}
func NewSlice[T any](a []T) *Slice[T] {
return &Slice[T]{
NewVar(a),
sync.Mutex{},
}
}
func (r *Slice[T]) Append(t ...T) {
r.mu.Lock()
ts := append(r.Load(), t...)
r.Store(ts)
r.mu.Unlock()
}

39
safety/slice_test.go Normal file
View File

@ -0,0 +1,39 @@
package safety
import (
"fmt"
"github/fthvgb1/wp-go/helper"
"testing"
"time"
)
func TestSlice_Append(t *testing.T) {
type args[T any] struct {
t []T
}
type testCase[T any] struct {
name string
r Slice[T]
args args[T]
}
tests := []testCase[int]{
{
name: "t1",
r: *NewSlice([]int{}),
args: args[int]{helper.RangeSlice(1, 10, 1)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
fn := func() {
tt.r.Append(tt.args.t...)
}
go fn()
go fn()
go fn()
go fn()
time.Sleep(time.Second)
fmt.Println(tt.r.Load())
})
}
}

92
stream/simpleStream.go Normal file
View File

@ -0,0 +1,92 @@
package stream
import (
"github/fthvgb1/wp-go/helper"
"github/fthvgb1/wp-go/safety"
"github/fthvgb1/wp-go/taskPools"
)
func Reduce[T any, S any](s SimpleSliceStream[S], fn func(S, T) T) (r T) {
return helper.SliceReduce(s.arr, fn, r)
}
type SimpleSliceStream[T any] struct {
arr []T
}
func NewSimpleSliceStream[T any](arr []T) SimpleSliceStream[T] {
return SimpleSliceStream[T]{arr: arr}
}
func (r SimpleSliceStream[T]) ForEach(fn func(T)) {
for _, t := range r.arr {
fn(t)
}
}
func (r SimpleSliceStream[T]) ParallelForEach(fn func(T), c int) {
p := taskPools.NewPools(c)
for _, t := range r.arr {
t := t
p.Execute(func() {
fn(t)
})
}
p.Wait()
}
func (r SimpleSliceStream[T]) ParallelFilter(fn func(T) bool, c int) SimpleSliceStream[T] {
p := taskPools.NewPools(c)
var x []T
rr := safety.NewSlice(x)
for _, t := range r.arr {
t := t
p.Execute(func() {
if fn(t) {
rr.Append(t)
}
})
}
p.Wait()
return SimpleSliceStream[T]{rr.Load()}
}
func (r SimpleSliceStream[T]) Filter(fn func(T) bool) SimpleSliceStream[T] {
r.arr = helper.SliceFilter(r.arr, fn)
return r
}
func (r SimpleSliceStream[T]) ParallelMap(fn func(T) T, c int) SimpleSliceStream[T] {
p := taskPools.NewPools(c)
var x []T
rr := safety.NewSlice(x)
for _, t := range r.arr {
t := t
p.Execute(func() {
rr.Append(fn(t))
})
}
p.Wait()
return SimpleSliceStream[T]{rr.Load()}
}
func (r SimpleSliceStream[T]) Map(fn func(T) T) SimpleSliceStream[T] {
r.arr = helper.SliceMap(r.arr, fn)
return r
}
func (r SimpleSliceStream[T]) Sort(fn func(i, j T) bool) SimpleSliceStream[T] {
helper.SimpleSort(r.arr, fn)
return r
}
func (r SimpleSliceStream[T]) Limit(limit, offset int) SimpleSliceStream[T] {
return SimpleSliceStream[T]{r.arr[offset : offset+limit]}
}
func (r SimpleSliceStream[T]) Reverse() SimpleSliceStream[T] {
helper.SliceSelfReverse(r.arr)
return r
}
func (r SimpleSliceStream[T]) Result() []T {
return r.arr
}

337
stream/simpleStream_test.go Normal file
View File

@ -0,0 +1,337 @@
package stream
import (
"fmt"
"github/fthvgb1/wp-go/helper"
"reflect"
"testing"
)
var s = NewSimpleSliceStream(helper.RangeSlice(1, 10, 1))
func TestSimpleSliceStream_Filter(t *testing.T) {
type args[T int] struct {
fn func(T) bool
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
func(t int) (r bool) {
if t > 5 {
r = true
}
return
},
},
want: SimpleSliceStream[int]{helper.RangeSlice(6, 10, 1)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.Filter(tt.args.fn); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Filter() = %v, want %v", got, tt.want)
}
})
}
}
func TestSimpleSliceStream_ForEach(t *testing.T) {
type args[T int] struct {
fn func(T)
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
func(t int) {
fmt.Println(t)
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.r.ForEach(tt.args.fn)
})
}
}
func TestSimpleSliceStream_Limit(t *testing.T) {
type args struct {
limit int
offset int
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args{
limit: 3,
offset: 5,
},
want: SimpleSliceStream[int]{helper.RangeSlice(6, 8, 1)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.Limit(tt.args.limit, tt.args.offset); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Limit() = %v, want %v", got, tt.want)
}
})
}
}
func TestSimpleSliceStream_Map(t *testing.T) {
type args[T int] struct {
fn func(T) T
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
func(t int) (r int) {
return t * 2
},
},
want: SimpleSliceStream[int]{helper.RangeSlice(2, 20, 2)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.Map(tt.args.fn); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Map() = %v, want %v", got, tt.want)
}
})
}
}
func TestSimpleSliceStream_Result(t *testing.T) {
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
want []T
}
tests := []testCase[int]{
{
name: "t1",
r: s,
want: helper.RangeSlice(1, 10, 1),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.Result(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Result() = %v, want %v", got, tt.want)
}
})
}
}
func TestSimpleSliceStream_Sort(t *testing.T) {
type args[T int] struct {
fn func(i, j T) bool
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
fn: func(i, j int) bool {
return i > j
},
},
want: SimpleSliceStream[int]{helper.RangeSlice(10, 1, -1)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.Sort(tt.args.fn); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Sort() = %v, want %v", got, tt.want)
}
})
}
}
func TestSimpleSliceStream_parallelForEach(t *testing.T) {
type args[T int] struct {
fn func(T)
c int
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
fn: func(t int) {
fmt.Println(t)
},
c: 3,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.r.ParallelForEach(tt.args.fn, tt.args.c)
})
}
}
func TestSimpleSliceStream_ParallelFilter(t *testing.T) {
type args[T int] struct {
fn func(T) bool
c int
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
fn: func(t int) bool {
return t > 3
},
c: 6,
},
want: SimpleSliceStream[int]{helper.RangeSlice(4, 10, 1)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.ParallelFilter(tt.args.fn, tt.args.c).Sort(func(i, j int) bool {
return i < j
}); !reflect.DeepEqual(got, tt.want) {
t.Errorf("ParallelFilter() = %v, want %v", got, tt.want)
}
})
}
}
func TestSimpleSliceStream_ParallelMap(t *testing.T) {
type args[T int] struct {
fn func(T) T
c int
}
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
args args[T]
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
args: args[int]{
fn: func(t int) int {
return t * 2
},
c: 6,
},
want: SimpleSliceStream[int]{helper.RangeSlice(2, 20, 2)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.ParallelMap(tt.args.fn, tt.args.c).Sort(func(i, j int) bool {
return i < j
}); !reflect.DeepEqual(got, tt.want) {
t.Errorf("ParallelMap() = %v, want %v", got, tt.want)
}
})
}
}
func TestReduce(t *testing.T) {
type args[S, T int] struct {
s SimpleSliceStream[S]
fn func(S, T) T
}
type testCase[S, T int] struct {
name string
args args[S, T]
wantR T
}
tests := []testCase[int, int]{
{
name: "t1",
args: args[int, int]{
s, func(i, r int) int {
return i + r
},
},
wantR: helper.Sum(s.Result()...),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if gotR := Reduce(tt.args.s, tt.args.fn); !reflect.DeepEqual(gotR, tt.wantR) {
t.Errorf("Reduce() = %v, want %v", gotR, tt.wantR)
}
})
}
}
func TestSimpleSliceStream_Reverse(t *testing.T) {
type testCase[T int] struct {
name string
r SimpleSliceStream[T]
want SimpleSliceStream[T]
}
tests := []testCase[int]{
{
name: "t1",
r: s,
want: SimpleSliceStream[int]{helper.RangeSlice(10, 1, -1)},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.r.Reverse(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Reverse() = %v, want %v", got, tt.want)
}
})
}
}