# How to use Reduce method of diff Package

Best Got code snippet using diff.Reduce

reducer_test.go

Source:reducer_test.go

`...16 "testing"17 . "github.com/smartystreets/goconvey/convey"18 "yunion.io/x/onecloud/pkg/monitor/tsdb"19)20func TestSimpleReducer(t *testing.T) {21 Convey("Test simple reducer by calculating", t, func() {22 Convey("sum", func() {23 result := testReducer("sum", 1, 2, 3)24 So(result, ShouldEqual, float64(6))25 })26 Convey("min", func() {27 result := testReducer("min", 3, 2, 1)28 So(result, ShouldEqual, float64(1))29 })30 Convey("max", func() {31 result := testReducer("max", 1, 2, 3)32 So(result, ShouldEqual, float64(3))33 })34 Convey("count", func() {35 result := testReducer("count", 1, 2, 3000)36 So(result, ShouldEqual, float64(3))37 })38 Convey("last", func() {39 result := testReducer("last", 1, 2, 3000)40 So(result, ShouldEqual, float64(3000))41 })42 Convey("median odd amount of numbers", func() {43 result := testReducer("median", 1, 2, 3000)44 So(result, ShouldEqual, float64(2))45 })46 Convey("median even amount of numbers", func() {47 result := testReducer("median", 1, 2, 4, 3000)48 So(result, ShouldEqual, float64(3))49 })50 Convey("median with one values", func() {51 result := testReducer("median", 1)52 So(result, ShouldEqual, float64(1))53 })54 Convey("median should ignore null values", func() {55 reducer := newSimpleReducerByType("median")56 series := &tsdb.TimeSeries{57 Name: "test time series",58 }59 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 1))60 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 2))61 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 3))62 series.Points = append(series.Points, tsdb.NewTimePointByVal(1, 4))63 series.Points = append(series.Points, tsdb.NewTimePointByVal(2, 5))64 series.Points = append(series.Points, tsdb.NewTimePointByVal(3, 6))65 result, _ := reducer.Reduce(series)66 So(result, ShouldNotBeNil)67 So(*result, ShouldEqual, 2)68 })69 Convey("avg", func() {70 result := testReducer("avg", 1, 2, 3)71 So(result, ShouldEqual, float64(2))72 })73 Convey("count_non_null", func() {74 Convey("with null values and real values", func() {75 reducer := newSimpleReducerByType("count_non_null")76 series := &tsdb.TimeSeries{77 Name: "test time series",78 }79 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 1))80 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 2))81 series.Points = append(series.Points, tsdb.NewTimePointByVal(3, 3))82 series.Points = append(series.Points, tsdb.NewTimePointByVal(4, 4))83 reduce, _ := reducer.Reduce(series)84 So(reduce, ShouldNotBeNil)85 So(*reduce, ShouldEqual, 2)86 })87 Convey("with null values", func() {88 reducer := newSimpleReducerByType("count_non_null")89 series := &tsdb.TimeSeries{90 Name: "test time series",91 }92 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 1))93 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 2))94 reduce, _ := reducer.Reduce(series)95 So(reduce, ShouldBeNil)96 })97 })98 Convey("avg of number values and null values should ignore nulls", func() {99 reduer := newSimpleReducerByType("avg")100 series := &tsdb.TimeSeries{101 Name: "test time series",102 }103 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 1))104 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 2))105 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 3))106 series.Points = append(series.Points, tsdb.NewTimePointByVal(3, 4))107 reduce, _ := reduer.Reduce(series)108 So(*reduce, ShouldEqual, 3)109 })110 Convey("diff one point", func() {111 result := testReducer("diff", 30)112 So(result, ShouldEqual, float64(0))113 })114 Convey("diff two points", func() {115 result := testReducer("diff", 30, 40)116 So(result, ShouldEqual, float64(10))117 })118 Convey("diff three points", func() {119 result := testReducer("diff", 30, 40, 40)120 So(result, ShouldEqual, float64(10))121 })122 Convey("diff with only nulls", func() {123 reducer := newSimpleReducerByType("diff")124 series := &tsdb.TimeSeries{125 Name: "test time serie",126 }127 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 1))128 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 2))129 reduce, _ := reducer.Reduce(series)130 So(reduce, ShouldBeNil)131 })132 Convey("percent_diff one point", func() {133 result := testReducer("percent_diff", 40)134 So(result, ShouldEqual, float64(0))135 })136 Convey("percent_diff two points", func() {137 result := testReducer("percent_diff", 30, 40)138 So(result, ShouldEqual, float64(33.33333333333333))139 })140 Convey("percent_diff three points", func() {141 result := testReducer("percent_diff", 30, 40, 40)142 So(result, ShouldEqual, float64(33.33333333333333))143 })144 Convey("percent_diff with only nulls", func() {145 reducer := newSimpleReducerByType("percent_diff")146 series := &tsdb.TimeSeries{147 Name: "test time serie",148 }149 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 1))150 series.Points = append(series.Points, tsdb.NewTimePoint(nil, 2))151 reduce, _ := reducer.Reduce(series)152 So(reduce, ShouldBeNil)153 })154 })155}156func testReducer(reducerType string, datapoints ...float64) float64 {157 reducer := newSimpleReducerByType(reducerType)158 serires := &tsdb.TimeSeries{159 Name: "test time series",160 }161 for idx := range datapoints {162 val := datapoints[idx]163 serires.Points = append(serires.Points, tsdb.NewTimePoint(&val, 1234134))164 }165 reduce, _ := reducer.Reduce(serires)166 return *reduce167}...`

poly_test.go

Source:poly_test.go

`...86 bh = b87 ah.NTT()88 bh.NTT()89 ph.MulHat(&ah, &bh)90 ph.BarrettReduce()91 ph.InvNTT()92 for i := 0; i < N; i++ {93 for j := 0; j < N; j++ {94 v := montReduce(int32(a[i]) * int32(b[j]))95 k := i + j96 if k >= N {97 // Recall xá´º = -1.98 k -= N99 v = -v100 }101 p[k] = barrettReduce(v + p[k])102 }103 }104 for i := 0; i < N; i++ {105 p[i] = int16((int32(p[i]) * ((1 << 16) % int32(Q))) % int32(Q))106 }107 p.Normalize()108 ph.Normalize()109 a.Normalize()110 b.Normalize()111 if p != ph {112 t.Fatalf("%v\n%v\n%v\n%v", a, b, p, ph)113 }114 }115}116func TestAddAgainstGeneric(t *testing.T) {117 for k := 0; k < 1000; k++ {118 var p1, p2, a, b Poly119 a.RandAbsLeQ()120 b.RandAbsLeQ()121 p1.Add(&a, &b)122 p2.addGeneric(&a, &b)123 if p1 != p2 {124 t.Fatalf("Add(%v, %v) = \n%v \n!= %v", a, b, p1, p2)125 }126 }127}128func BenchmarkAdd(b *testing.B) {129 var p Poly130 for i := 0; i < b.N; i++ {131 p.Add(&p, &p)132 }133}134func BenchmarkAddGeneric(b *testing.B) {135 var p Poly136 for i := 0; i < b.N; i++ {137 p.addGeneric(&p, &p)138 }139}140func TestSubAgainstGeneric(t *testing.T) {141 for k := 0; k < 1000; k++ {142 var p1, p2, a, b Poly143 a.RandAbsLeQ()144 b.RandAbsLeQ()145 p1.Sub(&a, &b)146 p2.subGeneric(&a, &b)147 if p1 != p2 {148 t.Fatalf("Sub(%v, %v) = \n%v \n!= %v", a, b, p1, p2)149 }150 }151}152func BenchmarkSub(b *testing.B) {153 var p Poly154 for i := 0; i < b.N; i++ {155 p.Sub(&p, &p)156 }157}158func BenchmarkSubGeneric(b *testing.B) {159 var p Poly160 for i := 0; i < b.N; i++ {161 p.subGeneric(&p, &p)162 }163}164func TestMulHatAgainstGeneric(t *testing.T) {165 for k := 0; k < 1000; k++ {166 var p1, p2, a, b Poly167 a.RandAbsLeQ()168 b.RandAbsLeQ()169 a2 := a170 b2 := b171 a2.Tangle()172 b2.Tangle()173 p1.MulHat(&a2, &b2)174 p1.Detangle()175 p2.mulHatGeneric(&a, &b)176 if p1 != p2 {177 t.Fatalf("MulHat(%v, %v) = \n%v \n!= %v", a, b, p1, p2)178 }179 }180}181func BenchmarkMulHat(b *testing.B) {182 var p Poly183 for i := 0; i < b.N; i++ {184 p.MulHat(&p, &p)185 }186}187func BenchmarkMulHatGeneric(b *testing.B) {188 var p Poly189 for i := 0; i < b.N; i++ {190 p.mulHatGeneric(&p, &p)191 }192}193func BenchmarkBarrettReduce(b *testing.B) {194 var p Poly195 for i := 0; i < b.N; i++ {196 p.BarrettReduce()197 }198}199func BenchmarkBarrettReduceGeneric(b *testing.B) {200 var p Poly201 for i := 0; i < b.N; i++ {202 p.barrettReduceGeneric()203 }204}205func TestBarrettReduceAgainstGeneric(t *testing.T) {206 for k := 0; k < 1000; k++ {207 var p1, p2, a Poly208 a.RandAbsLe9Q()209 p1 = a210 p2 = a211 p1.BarrettReduce()212 p2.barrettReduceGeneric()213 if p1 != p2 {214 t.Fatalf("BarrettReduce(%v) = \n%v \n!= %v", a, p1, p2)215 }216 }217}218func BenchmarkNormalize(b *testing.B) {219 var p Poly220 for i := 0; i < b.N; i++ {221 p.Normalize()222 }223}224func BenchmarkNormalizeGeneric(b *testing.B) {225 var p Poly226 for i := 0; i < b.N; i++ {227 p.barrettReduceGeneric()228 }229}230func TestNormalizeAgainstGeneric(t *testing.T) {231 for k := 0; k < 1000; k++ {232 var p1, p2, a Poly233 a.RandAbsLe9Q()234 p1 = a235 p2 = a236 p1.Normalize()237 p2.normalizeGeneric()238 if p1 != p2 {239 t.Fatalf("Normalize(%v) = \n%v \n!= %v", a, p1, p2)240 }241 }...`

diff_array.go

Source:diff_array.go

`1// Package prefix_sum2// DifferenceArray.InitDiffArray åå§åå·®åæ°ç»3// DifferenceArray.ReduceArray è¿åå·®åæ°ç»å°åå§æ°ç»4// DifferenceArray.IncrBetween ç»åºé´å¢å val5// CorpFlightBookings å·®åé®é¢ï¼èªç­é¢å®ç»è®¡6package prefix_sum7type DifferenceArray struct {8 diff []int9}10// InitDiffArray å·®åæ°ç»11func (arr *DifferenceArray) InitDiffArray(source []int) []int {12 if len(source) == 0 {13 return []int{}14 }15 arr.diff = make([]int, len(source))16 arr.diff[0] = source[0]17 for i := 1; i < len(source); i++ {18 arr.diff[i] = source[i] - source[i-1]19 }20 return arr.diff21}22// ReduceArray è¿åå·®åæ°ç»å°åå§æ°ç»23func (arr *DifferenceArray) ReduceArray() []int {24 if len(arr.diff) == 0 {25 return []int{}26 }27 res := make([]int, len(arr.diff))28 res[0] = arr.diff[0]29 for i := 1; i < len(arr.diff); i++ {30 res[i] = arr.diff[i] + res[i-1]31 }32 return res33}34// IncrBetween ç»åºé´å¢å val35func (arr *DifferenceArray) IncrBetween(i, j, val int) {36 arr.diff[i] += val37 if j+1 < len(arr.diff) {38 arr.diff[j+1] -= val39 }40}41// CorpFlightBookings èªç­é¢å®ç»è®¡42// bookings[x] = ç¬¬xæ¡è®°å½è¡¨ç¤ºï¼[i,j,k] ä»iå°jå°æ¯ä¸ªèªç­é¢å®äºkä¸ªåº§ä½43// n å±nä¸ªèªç­ï¼è¿åä¸ä¸ªé¿åº¦ä¸ºnçæ°ç»ï¼æèªç­åºå·é¡ºåºè¿åæ¯ä¸ªèªç­çé¢å®æ°44// eg: bookings = [[1,2,10],[2,3,20],[2,5,25]], n = 545func CorpFlightBookings(bookings [][]int, n int) []int {46 nums := make([]int, n)47 df := &DifferenceArray{}48 df.InitDiffArray(nums)49 for _, v := range bookings {50 var i = v[0] - 151 var j = v[1] - 152 var val = v[2]53 df.IncrBetween(i, j, val)54 }55 return df.ReduceArray()56}...`

Reduce

Using AI Code Generation

`1import (2func main() {3 a := []int{1, 2, 3, 4, 5}4 b := []int{1, 2, 3, 4, 5}5 fmt.Println("The difference between the two slices is:", diff(a, b))6}7import (8func diff(a, b []int) []int {9 m := make(map[int]int)10 for _, v := range a {11 }12 for _, v := range b {13 }14 c := make([]int, 0)15 for k, v := range m {16 if v == 1 {17 c = append(c, k)18 }19 }20}21a := []int{1, 2, 3, 4, 5}22b := []int{1, 2, 3, 4, 5, 6}23import (24func main() {25 a := []int{1, 2, 3, 4, 5}26 b := []int{1, 2, 3, 4, 5, 6}27 fmt.Println("The difference between`

Reduce

Using AI Code Generation

`1import (2type diff struct {3}4func (d diff) Reduce() float64 {5 return math.Abs(d.a - d.b)6}7func main() {8 d := diff{3.4, 1.2}9 fmt.Println(d.Reduce())10}11import (12type diff struct {13}14func (d diff) Reduce() float64 {15 return math.Abs(d.a - d.b)16}17func main() {18 d := diff{3.4, 1.2}19 fmt.Println(d.Reduce())20}21import (22type diff struct {23}24func (d diff) Reduce() float64 {25 return math.Abs(d.a - d.b)26}27func main() {28 d := diff{3.4, 1.2}29 fmt.Println(d.Reduce())30}31import (32type diff struct {33}34func (d diff) Reduce() float64 {35 return math.Abs(d.a - d.b)36}37func main() {38 d := diff{3.4, 1.2}39 fmt.Println(d.Reduce())40}41import (42type diff struct {43}44func (d diff) Reduce() float64 {45 return math.Abs(d.a - d.b)46}47func main() {48 d := diff{3.4, 1.2}49 fmt.Println(d.Reduce())50}51import (52type diff struct {53}54func (d diff)`

Reduce

Using AI Code Generation

`1func main() {2 var a = []int{1, 2, 3, 4, 5}3 var b = []int{1, 2, 3, 4, 5}4 var c = []int{1, 2, 3, 4, 5}5 var d = []int{1, 2, 3, 4, 5}6 var e = []int{1, 2, 3, 4, 5}7 var f = []int{1, 2, 3, 4, 5}8 var g = []int{1, 2, 3, 4, 5}9 var h = []int{1, 2, 3, 4, 5}10 var i = []int{1, 2, 3, 4, 5}11 var j = []int{1, 2, 3, 4, 5}12 var k = []int{1, 2, 3, 4, 5}13 var l = []int{1, 2, 3, 4, 5}14 var m = []int{1, 2, 3, 4, 5}15 var n = []int{1, 2, 3, 4, 5}16 var o = []int{1, 2, 3, 4, 5}17 var p = []int{1, 2, 3, 4, 5}18 var q = []int{1, 2, 3, 4, 5}19 var r = []int{1, 2, 3, 4, 5}20 var s = []int{1, 2, 3, 4, 5}21 var t = []int{1, 2, 3, 4, 5}22 var u = []int{1, 2, 3, 4, 5}23 var v = []int{1, 2, 3, 4, 5}24 var w = []int{1, 2, 3, 4, 5}25 var x = []int{1, 2`

Reduce

Using AI Code Generation

`1type diff struct {2}3func (d diff) Reduce() int {4}5func main() {6 d := diff{a: 10, b: 5}7 fmt.Println(d.Reduce())8}9type A struct {10}11func (a A) Show() {12 fmt.Println("Name is", a.name)13}14type B struct {15}16func (b B) Show() {17 fmt.Println("Name is", b.name, "and city is", b.city)18}19func main() {20 b := B{A{"Raj"}, "Mumbai"}21 b.Show()22}23type A struct {24}25func (a A) Show() {26 fmt.Println("Name is", a.name)27}28func (a A) ShowCity(city string) {29 fmt.Println("Name is", a.name, "and city is", city)30}31func main() {32 a := A{"Raj"}33 a.Show()34 a.ShowCity("Mumbai")35}36type A struct {37}38func (a A) Show() {39 fmt.Println("Name is", a.name)40}41func (a A) ShowCity(city string) {42 fmt.Println("Name is", a.name, "and city is", city)43}44type B struct {45}46func (b B) Show() {`

Reduce

Using AI Code Generation

`1import (2func main() {3 d := diff.New()4 d.Add("a", "A")5 d.Add("b", "B")6 d.Add("c", "C")7 d.Add("d", "D")8 d.Add("e", "E")9 d.Add("f", "F")10 d.Add("g", "G")11 d.Add("h", "H")12 d.Add("i", "I")13 d.Add("j", "J")14 d.Add("k", "K")15 d.Add("l", "L")16 d.Add("m", "M")17 d.Add("n", "N")18 d.Add("o", "O")19 d.Add("p", "P")20 d.Add("q", "Q")21 d.Add("r", "R")22 d.Add("s", "S")23 d.Add("t", "T")24 d.Add("u", "U")25 d.Add("v", "V")26 d.Add("w", "W")27 d.Add("x", "X")28 d.Add("y", "Y")29 d.Add("z", "Z")30 d.Add("a", "A")31 d.Add("b", "B")32 d.Add("c", "C")33 d.Add("d", "D")34 d.Add("e", "E")35 d.Add("f", "F")36 d.Add("g", "G")37 d.Add("h", "H")38 d.Add("i", "I")39 d.Add("j", "J")40 d.Add("k", "K")41 d.Add("l", "L")42 d.Add("m", "M")43 d.Add("n", "N")44 d.Add("o", "O")45 d.Add("p", "P")46 d.Add("q", "Q")47 d.Add("r", "R")48 d.Add("s", "S")49 d.Add("t", "T")50 d.Add("u", "U")51 d.Add("v", "V")52 d.Add("w", "W")53 d.Add("x", "X")54 d.Add("y", "Y")55 d.Add("z", "Z")56 d.Add("a", "A")57 d.Add("b", "B")58 d.Add("c", "C")59 d.Add("d", "D")60 d.Add("e", "E")61 d.Add("f", "F")62 d.Add("g", "G")63 d.Add("h`

Reduce

Using AI Code Generation

`1import (2func main() {3 a := []int{1, 2, 3, 4, 5}4 b := []int{1, 2, 3, 4, 5, 6, 7}5 c := []int{1, 2, 3, 4, 5}6 d := []int{1, 2, 3, 4, 5, 6, 7}7 fmt.Println(reflect.DeepEqual(a, b))8 fmt.Println(reflect.DeepEqual(c, d))9}10Difference between two arrays in F# (.Net)`

Reduce

Using AI Code Generation

`1import (2type Diff struct {3}4func (d Diff) Reduce() Diff {5 if d.a == 0 {6 }7 if d.b == 0 {8 }9 g := math.Gcd(float64(d.a), float64(d.b))10 d.a = int(float64(d.a) / g)11 d.b = int(float64(d.b) / g)12}13func main() {14 d1 := Diff{2, 4}15 d2 := Diff{0, 4}16 d3 := Diff{4, 0}17 d4 := Diff{4, 6}18 fmt.Println(d1.Reduce())19 fmt.Println(d2.Reduce())20 fmt.Println(d3.Reduce())21 fmt.Println(d4.Reduce())22}23{1 2}24{0 4}25{4 0}26{2 3}`

Reduce

Using AI Code Generation

`1func main() {2 a := []int{1, 2, 3, 4}3 b := []int{3, 4, 5, 6}4 c := diff.Reduce(func(x, y int) int {5 }, a, b)6 fmt.Println(c)7}8func Reduce(f func(int, int) int, a, b []int) int {9 return f(a[0], b[0])10}11import "testing"12func TestReduce(t *testing.T) {13 a := []int{1, 2, 3, 4}14 b := []int{3, 4, 5, 6}15 c := Reduce(func(x, y int) int {16 }, a, b)17 if c != 4 {18 t.Errorf("Expected 4, got %d", c)19 }20}`

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