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How to use Open method of got Package
Best Got code snippet using got.Open
writesched_priority_test.go
Source:writesched_priority_test.go 
...75 }76}77func TestPriorityTwoStreams(t *testing.T) {78 ws := defaultPriorityWriteScheduler()79 ws.OpenStream(1, OpenStreamOptions{})80 ws.OpenStream(2, OpenStreamOptions{})81 want := "1{weight:15,parent:0} 2{weight:15,parent:0}"82 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {83 t.Errorf("After open\ngot %q\nwant %q", got, want)84 }85 // Move 1's parent to 2.86 ws.AdjustStream(1, PriorityParam{87 StreamDep: 2,88 Weight: 32,89 Exclusive: false,90 })91 want = "1{weight:32,parent:2} 2{weight:15,parent:0}"92 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {93 t.Errorf("After adjust\ngot %q\nwant %q", got, want)94 }95 if err := checkPriorityWellFormed(ws); err != nil {96 t.Error(err)97 }98}99func TestPriorityAdjustExclusiveZero(t *testing.T) {100 // 1, 2, and 3 are all children of the 0 stream.101 // Exclusive reprioritization to any of the streams should bring102 // the rest of the streams under the reprioritized stream.103 ws := defaultPriorityWriteScheduler()104 ws.OpenStream(1, OpenStreamOptions{})105 ws.OpenStream(2, OpenStreamOptions{})106 ws.OpenStream(3, OpenStreamOptions{})107 want := "1{weight:15,parent:0} 2{weight:15,parent:0} 3{weight:15,parent:0}"108 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {109 t.Errorf("After open\ngot %q\nwant %q", got, want)110 }111 ws.AdjustStream(2, PriorityParam{112 StreamDep: 0,113 Weight: 20,114 Exclusive: true,115 })116 want = "1{weight:15,parent:2} 2{weight:20,parent:0} 3{weight:15,parent:2}"117 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {118 t.Errorf("After adjust\ngot %q\nwant %q", got, want)119 }120 if err := checkPriorityWellFormed(ws); err != nil {121 t.Error(err)122 }123}124func TestPriorityAdjustOwnParent(t *testing.T) {125 // Assigning a node as its own parent should have no effect.126 ws := defaultPriorityWriteScheduler()127 ws.OpenStream(1, OpenStreamOptions{})128 ws.OpenStream(2, OpenStreamOptions{})129 ws.AdjustStream(2, PriorityParam{130 StreamDep: 2,131 Weight: 20,132 Exclusive: true,133 })134 want := "1{weight:15,parent:0} 2{weight:15,parent:0}"135 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {136 t.Errorf("After adjust\ngot %q\nwant %q", got, want)137 }138 if err := checkPriorityWellFormed(ws); err != nil {139 t.Error(err)140 }141}142func TestPriorityClosedStreams(t *testing.T) {143 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{MaxClosedNodesInTree: 2}).(*priorityWriteScheduler)144 ws.OpenStream(1, OpenStreamOptions{})145 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})146 ws.OpenStream(3, OpenStreamOptions{PusherID: 2})147 ws.OpenStream(4, OpenStreamOptions{PusherID: 3})148 // Close the first three streams. We lose 1, but keep 2 and 3.149 ws.CloseStream(1)150 ws.CloseStream(2)151 ws.CloseStream(3)152 want := "2{weight:15,parent:0} 3{weight:15,parent:2} 4{weight:15,parent:3}"153 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {154 t.Errorf("After close\ngot %q\nwant %q", got, want)155 }156 if err := checkPriorityWellFormed(ws); err != nil {157 t.Error(err)158 }159 // Adding a stream as an exclusive child of 1 gives it default160 // priorities, since 1 is gone.161 ws.OpenStream(5, OpenStreamOptions{})162 ws.AdjustStream(5, PriorityParam{StreamDep: 1, Weight: 15, Exclusive: true})163 // Adding a stream as an exclusive child of 2 should work, since 2 is not gone.164 ws.OpenStream(6, OpenStreamOptions{})165 ws.AdjustStream(6, PriorityParam{StreamDep: 2, Weight: 15, Exclusive: true})166 want = "2{weight:15,parent:0} 3{weight:15,parent:6} 4{weight:15,parent:3} 5{weight:15,parent:0} 6{weight:15,parent:2}"167 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {168 t.Errorf("After add streams\ngot %q\nwant %q", got, want)169 }170 if err := checkPriorityWellFormed(ws); err != nil {171 t.Error(err)172 }173}174func TestPriorityClosedStreamsDisabled(t *testing.T) {175 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{}).(*priorityWriteScheduler)176 ws.OpenStream(1, OpenStreamOptions{})177 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})178 ws.OpenStream(3, OpenStreamOptions{PusherID: 2})179 // Close the first two streams. We keep only 3.180 ws.CloseStream(1)181 ws.CloseStream(2)182 want := "3{weight:15,parent:0}"183 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {184 t.Errorf("After close\ngot %q\nwant %q", got, want)185 }186 if err := checkPriorityWellFormed(ws); err != nil {187 t.Error(err)188 }189}190func TestPriorityIdleStreams(t *testing.T) {191 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{MaxIdleNodesInTree: 2}).(*priorityWriteScheduler)192 ws.AdjustStream(1, PriorityParam{StreamDep: 0, Weight: 15}) // idle193 ws.AdjustStream(2, PriorityParam{StreamDep: 0, Weight: 15}) // idle194 ws.AdjustStream(3, PriorityParam{StreamDep: 2, Weight: 20}) // idle195 ws.OpenStream(4, OpenStreamOptions{})196 ws.OpenStream(5, OpenStreamOptions{})197 ws.OpenStream(6, OpenStreamOptions{})198 ws.AdjustStream(4, PriorityParam{StreamDep: 1, Weight: 15})199 ws.AdjustStream(5, PriorityParam{StreamDep: 2, Weight: 15})200 ws.AdjustStream(6, PriorityParam{StreamDep: 3, Weight: 15})201 want := "2{weight:15,parent:0} 3{weight:20,parent:2} 4{weight:15,parent:0} 5{weight:15,parent:2} 6{weight:15,parent:3}"202 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {203 t.Errorf("After open\ngot %q\nwant %q", got, want)204 }205 if err := checkPriorityWellFormed(ws); err != nil {206 t.Error(err)207 }208}209func TestPriorityIdleStreamsDisabled(t *testing.T) {210 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{}).(*priorityWriteScheduler)211 ws.AdjustStream(1, PriorityParam{StreamDep: 0, Weight: 15}) // idle212 ws.AdjustStream(2, PriorityParam{StreamDep: 0, Weight: 15}) // idle213 ws.AdjustStream(3, PriorityParam{StreamDep: 2, Weight: 20}) // idle214 ws.OpenStream(4, OpenStreamOptions{})215 want := "4{weight:15,parent:0}"216 if got := fmtTree(ws, fmtNodeWeightParentSkipRoot); got != want {217 t.Errorf("After open\ngot %q\nwant %q", got, want)218 }219 if err := checkPriorityWellFormed(ws); err != nil {220 t.Error(err)221 }222}223func TestPrioritySection531NonExclusive(t *testing.T) {224 // Example from RFC 7540 Section 5.3.1.225 // A,B,C,D = 1,2,3,4226 ws := defaultPriorityWriteScheduler()227 ws.OpenStream(1, OpenStreamOptions{})228 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})229 ws.OpenStream(3, OpenStreamOptions{PusherID: 1})230 ws.OpenStream(4, OpenStreamOptions{})231 ws.AdjustStream(4, PriorityParam{232 StreamDep: 1,233 Weight: 15,234 Exclusive: false,235 })236 want := "1{parent:0} 2{parent:1} 3{parent:1} 4{parent:1}"237 if got := fmtTree(ws, fmtNodeParentSkipRoot); got != want {238 t.Errorf("After adjust\ngot %q\nwant %q", got, want)239 }240 if err := checkPriorityWellFormed(ws); err != nil {241 t.Error(err)242 }243}244func TestPrioritySection531Exclusive(t *testing.T) {245 // Example from RFC 7540 Section 5.3.1.246 // A,B,C,D = 1,2,3,4247 ws := defaultPriorityWriteScheduler()248 ws.OpenStream(1, OpenStreamOptions{})249 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})250 ws.OpenStream(3, OpenStreamOptions{PusherID: 1})251 ws.OpenStream(4, OpenStreamOptions{})252 ws.AdjustStream(4, PriorityParam{253 StreamDep: 1,254 Weight: 15,255 Exclusive: true,256 })257 want := "1{parent:0} 2{parent:4} 3{parent:4} 4{parent:1}"258 if got := fmtTree(ws, fmtNodeParentSkipRoot); got != want {259 t.Errorf("After adjust\ngot %q\nwant %q", got, want)260 }261 if err := checkPriorityWellFormed(ws); err != nil {262 t.Error(err)263 }264}265func makeSection533Tree() *priorityWriteScheduler {266 // Initial tree from RFC 7540 Section 5.3.3.267 // A,B,C,D,E,F = 1,2,3,4,5,6268 ws := defaultPriorityWriteScheduler()269 ws.OpenStream(1, OpenStreamOptions{})270 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})271 ws.OpenStream(3, OpenStreamOptions{PusherID: 1})272 ws.OpenStream(4, OpenStreamOptions{PusherID: 3})273 ws.OpenStream(5, OpenStreamOptions{PusherID: 3})274 ws.OpenStream(6, OpenStreamOptions{PusherID: 4})275 return ws276}277func TestPrioritySection533NonExclusive(t *testing.T) {278 // Example from RFC 7540 Section 5.3.3.279 // A,B,C,D,E,F = 1,2,3,4,5,6280 ws := defaultPriorityWriteScheduler()281 ws.OpenStream(1, OpenStreamOptions{})282 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})283 ws.OpenStream(3, OpenStreamOptions{PusherID: 1})284 ws.OpenStream(4, OpenStreamOptions{PusherID: 3})285 ws.OpenStream(5, OpenStreamOptions{PusherID: 3})286 ws.OpenStream(6, OpenStreamOptions{PusherID: 4})287 ws.AdjustStream(1, PriorityParam{288 StreamDep: 4,289 Weight: 15,290 Exclusive: false,291 })292 want := "1{parent:4} 2{parent:1} 3{parent:1} 4{parent:0} 5{parent:3} 6{parent:4}"293 if got := fmtTree(ws, fmtNodeParentSkipRoot); got != want {294 t.Errorf("After adjust\ngot %q\nwant %q", got, want)295 }296 if err := checkPriorityWellFormed(ws); err != nil {297 t.Error(err)298 }299}300func TestPrioritySection533Exclusive(t *testing.T) {301 // Example from RFC 7540 Section 5.3.3.302 // A,B,C,D,E,F = 1,2,3,4,5,6303 ws := defaultPriorityWriteScheduler()304 ws.OpenStream(1, OpenStreamOptions{})305 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})306 ws.OpenStream(3, OpenStreamOptions{PusherID: 1})307 ws.OpenStream(4, OpenStreamOptions{PusherID: 3})308 ws.OpenStream(5, OpenStreamOptions{PusherID: 3})309 ws.OpenStream(6, OpenStreamOptions{PusherID: 4})310 ws.AdjustStream(1, PriorityParam{311 StreamDep: 4,312 Weight: 15,313 Exclusive: true,314 })315 want := "1{parent:4} 2{parent:1} 3{parent:1} 4{parent:0} 5{parent:3} 6{parent:1}"316 if got := fmtTree(ws, fmtNodeParentSkipRoot); got != want {317 t.Errorf("After adjust\ngot %q\nwant %q", got, want)318 }319 if err := checkPriorityWellFormed(ws); err != nil {320 t.Error(err)321 }322}323func checkPopAll(ws WriteScheduler, order []uint32) error {324 for k, id := range order {325 wr, ok := ws.Pop()326 if !ok {327 return fmt.Errorf("Pop[%d]: got ok=false, want %d (order=%v)", k, id, order)328 }329 if got := wr.StreamID(); got != id {330 return fmt.Errorf("Pop[%d]: got %v, want %d (order=%v)", k, got, id, order)331 }332 }333 wr, ok := ws.Pop()334 if ok {335 return fmt.Errorf("Pop[%d]: got %v, want ok=false (order=%v)", len(order), wr.StreamID(), order)336 }337 return nil338}339func TestPriorityPopFrom533Tree(t *testing.T) {340 ws := makeSection533Tree()341 ws.Push(makeWriteHeadersRequest(3 /*C*/))342 ws.Push(makeWriteNonStreamRequest())343 ws.Push(makeWriteHeadersRequest(5 /*E*/))344 ws.Push(makeWriteHeadersRequest(1 /*A*/))345 t.Log("tree:", fmtTree(ws, fmtNodeParentSkipRoot))346 if err := checkPopAll(ws, []uint32{0 /*NonStream*/, 1, 3, 5}); err != nil {347 t.Error(err)348 }349}350func TestPriorityPopFromLinearTree(t *testing.T) {351 ws := defaultPriorityWriteScheduler()352 ws.OpenStream(1, OpenStreamOptions{})353 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})354 ws.OpenStream(3, OpenStreamOptions{PusherID: 2})355 ws.OpenStream(4, OpenStreamOptions{PusherID: 3})356 ws.Push(makeWriteHeadersRequest(3))357 ws.Push(makeWriteHeadersRequest(4))358 ws.Push(makeWriteHeadersRequest(1))359 ws.Push(makeWriteHeadersRequest(2))360 ws.Push(makeWriteNonStreamRequest())361 ws.Push(makeWriteNonStreamRequest())362 t.Log("tree:", fmtTree(ws, fmtNodeParentSkipRoot))363 if err := checkPopAll(ws, []uint32{0, 0 /*NonStreams*/, 1, 2, 3, 4}); err != nil {364 t.Error(err)365 }366}367func TestPriorityFlowControl(t *testing.T) {368 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{ThrottleOutOfOrderWrites: false})369 ws.OpenStream(1, OpenStreamOptions{})370 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})371 sc := &serverConn{maxFrameSize: 16}372 st1 := &stream{id: 1, sc: sc}373 st2 := &stream{id: 2, sc: sc}374 ws.Push(FrameWriteRequest{&writeData{1, make([]byte, 16), false}, st1, nil})375 ws.Push(FrameWriteRequest{&writeData{2, make([]byte, 16), false}, st2, nil})376 ws.AdjustStream(2, PriorityParam{StreamDep: 1})377 // No flow-control bytes available.378 if wr, ok := ws.Pop(); ok {379 t.Fatalf("Pop(limited by flow control)=%v,true, want false", wr)380 }381 // Add enough flow-control bytes to write st2 in two Pop calls.382 // Should write data from st2 even though it's lower priority than st1.383 for i := 1; i <= 2; i++ {384 st2.flow.add(8)385 wr, ok := ws.Pop()386 if !ok {387 t.Fatalf("Pop(%d)=false, want true", i)388 }389 if got, want := wr.DataSize(), 8; got != want {390 t.Fatalf("Pop(%d)=%d bytes, want %d bytes", i, got, want)391 }392 }393}394func TestPriorityThrottleOutOfOrderWrites(t *testing.T) {395 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{ThrottleOutOfOrderWrites: true})396 ws.OpenStream(1, OpenStreamOptions{})397 ws.OpenStream(2, OpenStreamOptions{PusherID: 1})398 sc := &serverConn{maxFrameSize: 4096}399 st1 := &stream{id: 1, sc: sc}400 st2 := &stream{id: 2, sc: sc}401 st1.flow.add(4096)402 st2.flow.add(4096)403 ws.Push(FrameWriteRequest{&writeData{2, make([]byte, 4096), false}, st2, nil})404 ws.AdjustStream(2, PriorityParam{StreamDep: 1})405 // We have enough flow-control bytes to write st2 in a single Pop call.406 // However, due to out-of-order write throttling, the first call should407 // only write 1KB.408 wr, ok := ws.Pop()409 if !ok {410 t.Fatalf("Pop(st2.first)=false, want true")411 }412 if got, want := wr.StreamID(), uint32(2); got != want {413 t.Fatalf("Pop(st2.first)=stream %d, want stream %d", got, want)414 }415 if got, want := wr.DataSize(), 1024; got != want {416 t.Fatalf("Pop(st2.first)=%d bytes, want %d bytes", got, want)417 }418 // Now add data on st1. This should take precedence.419 ws.Push(FrameWriteRequest{&writeData{1, make([]byte, 4096), false}, st1, nil})420 wr, ok = ws.Pop()421 if !ok {422 t.Fatalf("Pop(st1)=false, want true")423 }424 if got, want := wr.StreamID(), uint32(1); got != want {425 t.Fatalf("Pop(st1)=stream %d, want stream %d", got, want)426 }427 if got, want := wr.DataSize(), 4096; got != want {428 t.Fatalf("Pop(st1)=%d bytes, want %d bytes", got, want)429 }430 // Should go back to writing 1KB from st2.431 wr, ok = ws.Pop()432 if !ok {433 t.Fatalf("Pop(st2.last)=false, want true")434 }435 if got, want := wr.StreamID(), uint32(2); got != want {436 t.Fatalf("Pop(st2.last)=stream %d, want stream %d", got, want)437 }438 if got, want := wr.DataSize(), 1024; got != want {439 t.Fatalf("Pop(st2.last)=%d bytes, want %d bytes", got, want)440 }441}442func TestPriorityWeights(t *testing.T) {443 ws := defaultPriorityWriteScheduler()444 ws.OpenStream(1, OpenStreamOptions{})445 ws.OpenStream(2, OpenStreamOptions{})446 sc := &serverConn{maxFrameSize: 8}447 st1 := &stream{id: 1, sc: sc}448 st2 := &stream{id: 2, sc: sc}449 st1.flow.add(40)450 st2.flow.add(40)451 ws.Push(FrameWriteRequest{&writeData{1, make([]byte, 40), false}, st1, nil})452 ws.Push(FrameWriteRequest{&writeData{2, make([]byte, 40), false}, st2, nil})453 ws.AdjustStream(1, PriorityParam{StreamDep: 0, Weight: 34})454 ws.AdjustStream(2, PriorityParam{StreamDep: 0, Weight: 9})455 // st1 gets 3.5x the bandwidth of st2 (3.5 = (34+1)/(9+1)).456 // The maximum frame size is 8 bytes. The write sequence should be:457 // st1, total bytes so far is (st1=8, st=0)458 // st2, total bytes so far is (st1=8, st=8)459 // st1, total bytes so far is (st1=16, st=8)460 // st1, total bytes so far is (st1=24, st=8) // 3x bandwidth461 // st1, total bytes so far is (st1=32, st=8) // 4x bandwidth462 // st2, total bytes so far is (st1=32, st=16) // 2x bandwidth463 // st1, total bytes so far is (st1=40, st=16)464 // st2, total bytes so far is (st1=40, st=24)465 // st2, total bytes so far is (st1=40, st=32)466 // st2, total bytes so far is (st1=40, st=40)467 if err := checkPopAll(ws, []uint32{1, 2, 1, 1, 1, 2, 1, 2, 2, 2}); err != nil {468 t.Error(err)469 }470}471func TestPriorityRstStreamOnNonOpenStreams(t *testing.T) {472 ws := NewPriorityWriteScheduler(&PriorityWriteSchedulerConfig{473 MaxClosedNodesInTree: 0,474 MaxIdleNodesInTree: 0,475 })476 ws.OpenStream(1, OpenStreamOptions{})477 ws.CloseStream(1)478 ws.Push(FrameWriteRequest{write: streamError(1, ErrCodeProtocol)})479 ws.Push(FrameWriteRequest{write: streamError(2, ErrCodeProtocol)})480 if err := checkPopAll(ws, []uint32{1, 2}); err != nil {481 t.Error(err)482 }483}...
Open
Using AI Code Generation
1import "fmt"2func main() {3 f, err := os.Open("test.txt")4 if err != nil {5 fmt.Println(err)6 }7 defer f.Close()8 bs := make([]byte, 1024)9 for {10 n1, err := f.Read(bs)11 if err != nil && err != io.EOF {12 fmt.Println(err)13 }14 if n1 == 0 {15 }16 fmt.Print(string(bs[:n1]))17 }18}19import "fmt"20func main() {21 bs, err := ioutil.ReadFile("test.txt")22 if err != nil {23 }24 str := string(bs)25 fmt.Println(str)26}27import "fmt"28func main() {29 fileInfos, err := ioutil.ReadDir("C:/Users/YourName/Desktop")30 if err != nil {31 }32 for _, fi := range fileInfos {33 fmt.Println(fi.Name())34 }35}36import "fmt"37func main() {38 bs := []byte(str)39 err := ioutil.WriteFile("test.txt", bs, 0644)40 if err != nil {41 }42}43import "fmt"44func main() {45 f, err := os.Create("test.txt")46 if err != nil {47 }48 defer f.Close()49 f.WriteString("Hello World")50}51import "fmt"52func main() {53 f, err := os.Create("test.txt")54 if err != nil {55 }56 defer f.Close()57 f.Write([]byte("Hello World"))58}59import "fmt"60func main() {61 f, err := os.Create("test.txt")
Open
Using AI Code Generation
1import (2func main() {3 fi, err := os.Open("test.txt")4 if err != nil {5 fmt.Println("Error: The file doesn't exist")6 }7 defer func() {8 if err := fi.Close(); err != nil {9 panic(err)10 }11 }()12 r := bufio.NewReader(fi)13 line, err := r.ReadString('14 if err != nil {15 fmt.Println("Error: Couldn't read the file.")16 }17 fmt.Print(line)18}
Open
Using AI Code Generation
1import "os"2func main() {3file, err := os.Open("1.txt")4if err != nil {5fmt.Println(err)6}7defer file.Close()8}9import "os"10func main() {11file, err := os.OpenFile("1.txt", os.O_RDWR, 0644)12if err != nil {13fmt.Println(err)14}15defer file.Close()16}17import "os"18func main() {19file, err := os.Create("1.txt")20if err != nil {21fmt.Println(err)22}23defer file.Close()24}25import "os"26func main() {27file, err := os.NewFile(1, "1.txt")28if err != nil {29fmt.Println(err)30}31defer file.Close()32}33import "os"34func main() {35err := os.Mkdir("1.txt", 0755)36if err != nil {37fmt.Println(err)38}39}40import "os"41func main() {42err := os.MkdirAll("1.txt", 0755)43if err != nil {44fmt.Println(err)45}46}47import "os"48func main() {49err := os.Remove("1.txt")50if err != nil {51fmt.Println(err)52}53}54import "os"55func main() {56err := os.RemoveAll("1.txt")57if err != nil {58fmt.Println(err)59}60}61import "os"62func main() {63err := os.Rename("1.txt", "2.txt")64if err != nil {65fmt.Println(err)66}67}
Open
Using AI Code Generation
1import (2func main() {3 s.Open()4}5import (6func main() {7 s.Open()8}9import (10type got struct {11}12func (g *got) Open() {13 fmt.Println("open")14}15func (g *got) Close() {16 fmt.Println("close")17}
Open
Using AI Code Generation
1import (2func main() {3fmt.Println("Hello, playground")4data, err := ioutil.ReadFile("1.txt")5if err != nil {6fmt.Println("File reading error", err)7}8fmt.Println("Contents of file:", string(data))9}10import (11func main() {12fmt.Println("Hello, playground")13data, err := ioutil.ReadFile("2.txt")14if err != nil {15fmt.Println("File reading error", err)16}17fmt.Println("Contents of file:", string(data))18}19import (20func main() {21fmt.Println("Hello, playground")22data, err := ioutil.ReadFile("3.txt")23if err != nil {24fmt.Println("File reading error", err)25}26fmt.Println("Contents of file:", string(data))27}28import (29func main() {30fmt.Println("Hello, playground")31data, err := ioutil.ReadFile("4.txt")32if err != nil {33fmt.Println("File reading error", err)34}35fmt.Println("Contents of file:", string(data))36}37import (38func main() {39fmt.Println("Hello, playground")40data, err := ioutil.ReadFile("5.txt")41if err != nil {42fmt.Println("File reading error", err)43}44fmt.Println("Contents of file:", string(data))45}46import (47func main() {48fmt.Println("Hello, playground")49data, err := ioutil.ReadFile("6.txt")50if err != nil {51fmt.Println("File reading error", err)52}53fmt.Println("Contents of file:", string(data))54}55import (56func main() {57fmt.Println("Hello, playground")58data, err := ioutil.ReadFile("7.txt")
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