How to use Shift method of input Package

Best Rod code snippet using input.Shift

virtual_keyboard_auto_shift.go

Source:virtual_keyboard_auto_shift.go Github

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...24 "chromiumos/tast/testing/hwdep"25)26func init() {27 testing.AddTest(&testing.Test{28 Func: VirtualKeyboardAutoShift,29 LacrosStatus: testing.LacrosVariantUnknown,30 Desc: "Checks that auto shift feature of virtual keyboard",31 Contacts: []string{"shengjun@chromium.org", "tranbaoduy@chromium.org", "essential-inputs-team@google.com"},32 Attr: []string{"group:mainline", "group:input-tools"},33 SoftwareDeps: []string{"chrome", "google_virtual_keyboard"},34 HardwareDeps: hwdep.D(pre.InputsStableModels),35 Timeout: 5 * time.Minute,36 Params: []testing.Param{{37 // Auto-shift is primarily designed for tablet mode.38 Pre: pre.VKEnabledTabletReset,39 ExtraAttr: []string{"group:input-tools-upstream"},40 }, {41 Name: "fixture",42 Fixture: fixture.TabletVK,43 ExtraAttr: []string{"informational"},44 }},45 })46}47func VirtualKeyboardAutoShift(ctx context.Context, s *testing.State) {48 var cr *chrome.Chrome49 var tconn *chrome.TestConn50 var uc *useractions.UserContext51 if strings.Contains(s.TestName(), "fixture") {52 cr = s.FixtValue().(fixture.FixtData).Chrome53 tconn = s.FixtValue().(fixture.FixtData).TestAPIConn54 uc = s.FixtValue().(fixture.FixtData).UserContext55 uc.SetTestName(s.TestName())56 } else {57 cr = s.PreValue().(pre.PreData).Chrome58 tconn = s.PreValue().(pre.PreData).TestAPIConn59 uc = s.PreValue().(pre.PreData).UserContext60 }61 cleanupCtx := ctx62 ctx, cancel := ctxutil.Shorten(ctx, 5*time.Second)63 defer cancel()64 defer faillog.DumpUITreeOnError(cleanupCtx, s.OutDir(), s.HasError, tconn)65 its, err := testserver.Launch(ctx, cr, tconn)66 if err != nil {67 s.Fatal("Failed to launch inputs test server: ", err)68 }69 defer its.Close()70 vkbCtx := vkb.NewContext(cr, tconn)71 touchCtx, err := touch.New(ctx, tconn)72 if err != nil {73 s.Fatal("Fail to get touch screen: ", err)74 }75 defer touchCtx.Close()76 leftShiftKey := nodewith.Name("shift").Ancestor(vkb.NodeFinder.HasClass("key_pos_shift_left"))77 manualShift := vkbCtx.TapNode(leftShiftKey)78 shiftLock := uiauto.Combine("double tap to lock shift state",79 // Throws out error if VK is shifted already.80 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),81 vkbCtx.DoubleTapNode(leftShiftKey),82 )83 validateManualShiftAndShiftLock := uiauto.Combine("validate manual shift and shift-lock",84 // This scenario should start in unshifted state.85 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),86 manualShift,87 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),88 // Sleep 1s to avoid double shift.89 uiauto.Sleep(time.Second),90 manualShift,91 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),92 uiauto.Sleep(time.Second),93 shiftLock,94 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateLocked),95 manualShift,96 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),97 )98 // setup makes sure the VK is in unshifted state.99 // It force show VK and manual unshift if VK is shifted before test.100 setup := func(ctx context.Context) error {101 if shiftState, err := vkbCtx.ShiftState(ctx); err != nil {102 return errors.Wrap(err, "failed to get VK shift state in setup")103 } else if shiftState != vkb.ShiftStateNone {104 testing.ContextLog(ctx, "VK remains shifted in last test. Try to manually unshift")105 if err := uiauto.Combine("manually unshift in setup",106 // It does not nothing if VK is already on screen.107 vkbCtx.ShowVirtualKeyboard(),108 manualShift,109 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),110 )(ctx); err != nil {111 return errors.Wrap(err, "failed to unshift VK in setup")112 }113 }114 // Making sure VK is hidden. It does not nothing if VK is not on screen.115 return vkbCtx.HideVirtualKeyboard()(ctx)116 }117 // teardown dumps information on errors.118 // Reset VK visibility & shift state is done is done in setup.119 teardown := func(ctx context.Context, subtestName string, hasError func() bool) {120 outDir := filepath.Join(s.OutDir(), subtestName)121 faillog.DumpUITreeWithScreenshotOnError(ctx, outDir, hasError, cr, subtestName)122 }123 validateVKShiftInSentenceMode := func(ctx context.Context, inputField testserver.InputField) uiauto.Action {124 return uiauto.Combine("validate VK shift in sentence mode",125 its.Clear(inputField),126 // VK should be auto shifted in empty field.127 its.ClickFieldUntilVKShown(inputField),128 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),129 // VK should be reverted to normal after first type.130 vkbCtx.TapKey("H"),131 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),132 vkbCtx.TapKeys(strings.Split("ello", "")),133 // VK should not be auto shifted after space134 vkbCtx.TapKeyIgnoringCase("SPACE"),135 vkbCtx.TapKeys(strings.Split("world.", "")),136 // VK should be auto shifted after a full stop and SPACE.137 vkbCtx.TapKeyIgnoringCase("space"),138 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),139 // VK should be reverted to normal after first type.140 vkbCtx.TapKey("H"),141 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),142 validateManualShiftAndShiftLock,143 util.WaitForFieldTextToBe(tconn, inputField.Finder(), "Hello world. H"),144 )145 }146 validateVKShiftInWordMode := func(ctx context.Context, inputField testserver.InputField) uiauto.Action {147 return uiauto.Combine("validate VK shift in word mode",148 its.Clear(inputField),149 // VK should be auto shifted in empty field.150 its.ClickFieldUntilVKShown(inputField),151 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),152 // VK should be reverted to normal after first type.153 vkbCtx.TapKey("H"),154 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),155 vkbCtx.TapKeys(strings.Split("ello", "")),156 // VK should be auto shifted after space157 vkbCtx.TapKeyIgnoringCase("space"),158 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),159 // VK should be reverted to normal after first type.160 vkbCtx.TapKey("W"),161 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),162 vkbCtx.TapKeys(strings.Split("orld.", "")),163 // VK should be auto shifted after a full stop and SPACE.164 vkbCtx.TapKeyIgnoringCase("space"),165 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),166 // VK should be reverted to normal after first type.167 vkbCtx.TapKey("H"),168 validateManualShiftAndShiftLock,169 util.WaitForFieldTextToBe(tconn, inputField.Finder(), "Hello World. H"),170 )171 }172 validateVKShiftInCharMode := func(ctx context.Context, inputField testserver.InputField) uiauto.Action {173 return uiauto.Combine("validate VK shift in character mode",174 its.Clear(inputField),175 // VK should be shift lock in character mode.176 its.ClickFieldUntilVKShown(inputField),177 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateLocked),178 vkbCtx.TapKeys(strings.Split("HELLO", "")),179 vkbCtx.TapKeyIgnoringCase("space"),180 vkbCtx.TapKeys(strings.Split("WORLD", "")),181 // VK should be still shifted in new line.182 vkbCtx.TapKeyIgnoringCase("enter"),183 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateLocked),184 util.WaitForFieldTextToBe(tconn, inputField.Finder(), "HELLO WORLD\n"),185 )186 }187 validateNoVKShift := func(ctx context.Context, inputField testserver.InputField) uiauto.Action {188 return uiauto.Combine("validate no VK shift",189 its.Clear(inputField),190 // VK should not be auto shift.191 its.ClickFieldUntilVKShown(inputField),192 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),193 vkbCtx.TapKeys(strings.Split("hello", "")),194 vkbCtx.TapKeyIgnoringCase("space"),195 vkbCtx.TapKeys(strings.Split("world.", "")),196 // VK should not be auto shifted in next sentence.197 vkbCtx.TapKeyIgnoringCase("space"),198 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateNone),199 vkbCtx.TapKey("h"),200 validateManualShiftAndShiftLock,201 util.WaitForFieldTextToBe(tconn, inputField.Finder(), "hello world. h"),202 )203 }204 runSubtest := func(ctx context.Context, name string, f func(ctx context.Context) error) {205 s.Run(ctx, name, func(context.Context, *testing.State) {206 cleanupCtx := ctx207 ctx, cancel := ctxutil.Shorten(ctx, 5*time.Second)208 defer cancel()209 if err := setup(ctx); err != nil {210 s.Fatal("Failed to setup: ", err)211 }212 defer teardown(cleanupCtx, name, s.HasError)213 if err := f(ctx); err != nil {214 s.Fatal("Subtest failed: ", err)215 }216 })217 }218 runSubtest(ctx, "no_attribute",219 uiauto.UserAction("VK autoshift Sentense mode",220 validateVKShiftInSentenceMode(ctx, testserver.TextAreaInputField),221 uc,222 &useractions.UserActionCfg{223 Attributes: map[string]string{224 useractions.AttributeInputField: string(testserver.TextAreaInputField),225 useractions.AttributeTestScenario: "Sentense mode applies to fields with no attribute",226 useractions.AttributeFeature: useractions.FeatureVKAutoShift,227 },228 },229 ),230 )231 runSubtest(ctx, "sentence",232 uiauto.UserAction("VK autoshift Sentense mode",233 validateVKShiftInSentenceMode(ctx, testserver.TextAreaAutoShiftInSentence),234 uc,235 &useractions.UserActionCfg{236 Attributes: map[string]string{237 useractions.AttributeInputField: string(testserver.TextAreaAutoShiftInSentence),238 useractions.AttributeTestScenario: "Validate VK autoshift Sentense mode",239 useractions.AttributeFeature: useractions.FeatureVKAutoShift,240 },241 },242 ),243 )244 runSubtest(ctx, "word",245 uiauto.UserAction("VK autoshift Word mode",246 validateVKShiftInWordMode(ctx, testserver.TextAreaAutoShiftInWord),247 uc,248 &useractions.UserActionCfg{249 Attributes: map[string]string{250 useractions.AttributeInputField: string(testserver.TextAreaAutoShiftInWord),251 useractions.AttributeTestScenario: "Validate VK autoshift Word mode",252 useractions.AttributeFeature: useractions.FeatureVKAutoShift,253 },254 },255 ),256 )257 runSubtest(ctx, "char",258 uiauto.UserAction("VK autoshift Char mode",259 validateVKShiftInCharMode(ctx, testserver.TextAreaAutoShiftInChar),260 uc,261 &useractions.UserActionCfg{262 Attributes: map[string]string{263 useractions.AttributeInputField: string(testserver.TextAreaAutoShiftInChar),264 useractions.AttributeTestScenario: "Validate VK autoshift Char mode",265 useractions.AttributeFeature: useractions.FeatureVKAutoShift,266 },267 },268 ),269 )270 runSubtest(ctx, "off",271 uiauto.UserAction("VK autoshift off",272 validateNoVKShift(ctx, testserver.TextAreaAutoShiftOff),273 uc,274 &useractions.UserActionCfg{275 Attributes: map[string]string{276 useractions.AttributeInputField: string(testserver.TextAreaAutoShiftOff),277 useractions.AttributeTestScenario: "Validate VK autoshift turned off by attribute",278 useractions.AttributeFeature: useractions.FeatureVKAutoShift,279 },280 },281 ),282 )283 runSubtest(ctx, "url_inapplicable",284 uiauto.UserAction("VK autoshift off",285 validateNoVKShift(ctx, testserver.URLInputField),286 uc,287 &useractions.UserActionCfg{288 Attributes: map[string]string{289 useractions.AttributeInputField: string(testserver.URLInputField),290 useractions.AttributeTestScenario: "VK autoshift does not apply to inapplicable fields",291 useractions.AttributeFeature: useractions.FeatureVKAutoShift,292 },293 },294 ),295 )296 inputField := testserver.TextAreaInputField297 runSubtest(ctx, "override_autoshift",298 uiauto.UserAction("VK autoshift override",299 uiauto.Combine("override auto shift state",300 its.Clear(inputField),301 its.ClickFieldUntilVKShown(inputField),302 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateShifted),303 manualShift,304 vkbCtx.TapKeys(strings.Split("hello", "")),305 util.WaitForFieldTextToBe(tconn, inputField.Finder(), "hello"),306 ),307 uc,308 &useractions.UserActionCfg{309 Attributes: map[string]string{310 useractions.AttributeInputField: string(inputField),311 useractions.AttributeTestScenario: "VK autoshift is override by manual shift",312 useractions.AttributeFeature: useractions.FeatureVKAutoShift,313 },314 },315 ),316 )317 inputField = testserver.TextAreaAutoShiftInChar318 runSubtest(ctx, "override_shiftlock",319 uiauto.UserAction("VK autoshift override",320 uiauto.Combine("override shift lock",321 its.Clear(inputField),322 its.ClickFieldUntilVKShown(inputField),323 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateLocked),324 manualShift,325 vkbCtx.TapKey("h"),326 // Should recover to shift-lock after tapping first key.327 vkbCtx.WaitUntilShiftStatus(vkb.ShiftStateLocked),328 vkbCtx.TapKeys(strings.Split("ELLO", "")),329 util.WaitForFieldTextToBe(tconn, inputField.Finder(), "hELLO"),330 ),331 uc,332 &useractions.UserActionCfg{333 Attributes: map[string]string{334 useractions.AttributeInputField: string(inputField),335 useractions.AttributeTestScenario: "VK autoshift lock is override by manual shift",336 useractions.AttributeFeature: useractions.FeatureVKAutoShift,337 },338 },339 ),340 )341}...

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DCT4.go

Source:DCT4.go Github

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...26 MAX_VAL4 = 1 << 1627 MIN_VAL4 = -(MAX_VAL4 + 1)28)29type DCT4 struct {30 fShift uint // default 831 iShift uint // default 2032 data []int // int[16]33}34func NewDCT4() (*DCT4, error) {35 this := new(DCT4)36 this.fShift = 837 this.iShift = 2038 this.data = make([]int, 16)39 return this, nil40}41func (this *DCT4) Forward(src, dst []int) (uint, uint, error) {42 computeForward4(src, this.data, 4)43 computeForward4(this.data, dst, this.fShift-4)44 return 16, 16, nil45}46func computeForward4(input []int, output []int, shift uint) {47 round := (1 << shift) >> 148 x0 := input[0]49 x1 := input[1]50 x2 := input[2]51 x3 := input[3]52 x4 := input[4]53 x5 := input[5]54 x6 := input[6]55 x7 := input[7]56 x8 := input[8]57 x9 := input[9]58 x10 := input[10]59 x11 := input[11]60 x12 := input[12]61 x13 := input[13]62 x14 := input[14]63 x15 := input[15]64 a0 := x0 + x365 a1 := x1 + x266 a2 := x0 - x367 a3 := x1 - x268 a4 := x4 + x769 a5 := x5 + x670 a6 := x4 - x771 a7 := x5 - x672 a8 := x8 + x1173 a9 := x9 + x1074 a10 := x8 - x1175 a11 := x9 - x1076 a12 := x12 + x1577 a13 := x13 + x1478 a14 := x12 - x1579 a15 := x13 - x1480 output[0] = ((W4_0 * a0) + (W4_1 * a1) + round) >> shift81 output[1] = ((W4_0 * a4) + (W4_1 * a5) + round) >> shift82 output[2] = ((W4_0 * a8) + (W4_1 * a9) + round) >> shift83 output[3] = ((W4_0 * a12) + (W4_1 * a13) + round) >> shift84 output[4] = ((W4_4 * a2) + (W4_5 * a3) + round) >> shift85 output[5] = ((W4_4 * a6) + (W4_5 * a7) + round) >> shift86 output[6] = ((W4_4 * a10) + (W4_5 * a11) + round) >> shift87 output[7] = ((W4_4 * a14) + (W4_5 * a15) + round) >> shift88 output[8] = ((W4_8 * a0) + (W4_9 * a1) + round) >> shift89 output[9] = ((W4_8 * a4) + (W4_9 * a5) + round) >> shift90 output[10] = ((W4_8 * a8) + (W4_9 * a9) + round) >> shift91 output[11] = ((W4_8 * a12) + (W4_9 * a13) + round) >> shift92 output[12] = ((W4_12 * a2) + (W4_13 * a3) + round) >> shift93 output[13] = ((W4_12 * a6) + (W4_13 * a7) + round) >> shift94 output[14] = ((W4_12 * a10) + (W4_13 * a11) + round) >> shift95 output[15] = ((W4_12 * a14) + (W4_13 * a15) + round) >> shift96}97func (this *DCT4) Inverse(src, dst []int) (uint, uint, error) {98 computeInverse4(src, this.data, 10)99 computeInverse4(this.data, dst, this.iShift-10)100 return 16, 16, nil101}102func computeInverse4(input, output []int, shift uint) {103 round := (1 << shift) >> 1104 x0 := input[0]105 x1 := input[1]106 x2 := input[2]107 x3 := input[3]108 x4 := input[4]109 x5 := input[5]110 x6 := input[6]111 x7 := input[7]112 x8 := input[8]113 x9 := input[9]...

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DCT8.go

Source:DCT8.go Github

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...42 MAX_VAL8 = 1 << 1643 MIN_VAL8 = -(MAX_VAL8 + 1)44)45type DCT8 struct {46 fShift uint // default 1047 iShift uint // default 2048 data []int // int[64]49}50func NewDCT8() (*DCT8, error) {51 this := new(DCT8)52 this.fShift = 1053 this.iShift = 2054 this.data = make([]int, 64)55 return this, nil56}57func (this *DCT8) Forward(src, dst []int) (uint, uint, error) {58 computeForward8(src, this.data, 5)59 computeForward8(this.data, dst, this.fShift-5)60 return 64, 64, nil61}62func computeForward8(input, output []int, shift uint) {63 iIdx := 064 round := (1 << shift) >> 165 for i := 0; i < 8; i++ {66 x0 := input[iIdx]67 x1 := input[iIdx+1]68 x2 := input[iIdx+2]69 x3 := input[iIdx+3]70 x4 := input[iIdx+4]71 x5 := input[iIdx+5]72 x6 := input[iIdx+6]73 x7 := input[iIdx+7]74 a0 := x0 + x775 a1 := x1 + x676 a2 := x0 - x777 a3 := x1 - x678 a4 := x2 + x579 a5 := x3 + x480 a6 := x2 - x581 a7 := x3 - x482 b0 := a0 + a583 b1 := a1 + a484 b2 := a0 - a585 b3 := a1 - a486 output[i] = ((W8_0 * b0) + (W8_1 * b1) + round) >> shift87 output[i+8] = ((W8_8 * a2) + (W8_9 * a3) + (W8_10 * a6) + (W8_11 * a7) + round) >> shift88 output[i+16] = ((W8_16 * b2) + (W8_17 * b3) + round) >> shift89 output[i+24] = ((W8_24 * a2) + (W8_25 * a3) + (W8_26 * a6) + (W8_27 * a7) + round) >> shift90 output[i+32] = ((W8_32 * b0) + (W8_33 * b1) + round) >> shift91 output[i+40] = ((W8_40 * a2) + (W8_41 * a3) + (W8_42 * a6) + (W8_43 * a7) + round) >> shift92 output[i+48] = ((W8_48 * b2) + (W8_49 * b3) + round) >> shift93 output[i+56] = ((W8_56 * a2) + (W8_57 * a3) + (W8_58 * a6) + (W8_59 * a7) + round) >> shift94 iIdx += 895 }96}97func (this *DCT8) Inverse(src, dst []int) (uint, uint, error) {98 computeInverse8(src, this.data, 10)99 computeInverse8(this.data, dst, this.iShift-10)100 return 64, 64, nil101}102func computeInverse8(input []int, output []int, shift uint) {103 oIdx := 0104 round := (1 << shift) >> 1105 for i := 0; i < 8; i++ {106 x0 := input[i]107 x1 := input[i+8]108 x2 := input[i+16]109 x3 := input[i+24]110 x4 := input[i+32]111 x5 := input[i+40]112 x6 := input[i+48]113 x7 := input[i+56]...

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Shift

Using AI Code Generation

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1import (2func main() {3 input := NewInput("1 2 3")4 fmt.Println(input.Shift())5 fmt.Println(input.Shift())6 fmt.Println(input.Shift())7}8GoLang | Input Class | Shift() Method9GoLang | Input Class | HasNext() Method10GoLang | Input Class | NextInt() Method11GoLang | Input Class | NextFloat() Method12GoLang | Input Class | NextLine() Method13GoLang | Input Class | Next() Method14GoLang | Input Class | NextInts() Method15GoLang | Input Class | NextFloats() Method16GoLang | Input Class | NextStrings() Method17GoLang | Input Class | NextBytes() Method18GoLang | Input Class | NextRune() Method19GoLang | Input Class | NextRunes() Method20GoLang | Input Class | Next() Method21GoLang | Input Class | NextInts() Method22GoLang | Input Class | NextFloats() Method23GoLang | Input Class | NextStrings() Method24GoLang | Input Class | NextBytes() Method25GoLang | Input Class | NextRune() Method26GoLang | Input Class | NextRunes() Method

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Shift

Using AI Code Generation

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1import "fmt"2func main() {3 fmt.Print("Enter a string: ")4 fmt.Scanln(&input)5 fmt.Println("You entered: ", input)6 fmt.Println("Shifted: ", input[1:])7}

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Shift

Using AI Code Generation

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1import "fmt"2func main() {3input := NewInput()4input.Add("abc")5input.Add("xyz")6input.Add("pqr")7input.Add("def")8input.Add("ghi")9fmt.Println(input.Shift())10fmt.Println(input.Shift())11fmt.Println(input.Shift())12fmt.Println(input.Shift())13fmt.Println(input.Shift())14fmt.Println(input.Shift())15}

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Shift

Using AI Code Generation

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1import (2func main() {3 fmt.Println("input is ", input)4 fmt.Println("after shift, args is ", os.Args)5}6import (7func main() {8 fmt.Println("input is ", input)9 os.Args = append([]string{"3.go"}, os.Args[1:]...)10 fmt.Println("after unshift, args is ", os.Args)11}12import (13func main() {14 fmt.Println("input is ", input)15 os.Args = append(os.Args, "4.go")16 fmt.Println("after push, args is ", os.Args)17}18import (19func main() {20 fmt.Println("input is ", input)21 os.Args = os.Args[:len(os.Args)-1]22 fmt.Println("after pop, args is ", os.Args)23}24import (25func main() {26 fmt.Println("input is ", input)27 fmt.Println("count of args is ", len(os.Args)-1)28}29import (30func main() {31 fmt.Println("input is ", input)32 for i, j := 0, len(os.Args)-1; i < j; i, j = i+1, j-1 {33 }34 fmt.Println("after reverse, args is ", os.Args)35}36import (

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Shift

Using AI Code Generation

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1import (2func main() {3 input := bufio.NewScanner(os.Stdin)4 input.Scan()5 n, _ := strconv.Atoi(input.Text())6 input.Scan()7 s := input.Text()8 fmt.Println(s)9}

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Shift

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1import (2func main() {3 arr := []string{"A", "B", "C", "D", "E"}4 in := NewInput(arr)5 fmt.Println(in.Shift())6}7type Input struct {8}9func NewInput(arr []string) *Input {10 return &Input{arr, 0}11}12func (in *Input) Shift() string {13 if in.index >= len(in.arr) {14 }15}16How to use Go's io.Pipe()?17How to use Go's io.MultiReader()?18How to use Go's io.MultiWriter()?19How to use Go's io.CopyN()?20How to use Go's io.Copy()?21How to use Go's io.LimitReader()?22How to use Go's io.TeeReader()?23How to use Go's io.ReadFull()?24How to use Go's io.ReadAtLeast()?25How to use Go's io.ReadCloser()?26How to use Go's io.WriteCloser()?27How to use Go's io.ReadWriter()?28How to use Go's io.ReadSeeker()?

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