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How to use Select method of proggen Package

Best Syzkaller code snippet using proggen.Select

program.go

Source:program.go

1// Copyright 2019 Google LLC2//3// Licensed under the Apache License, Version 2.0 (the "License");4// you may not use this file except in compliance with the License.5// You may obtain a copy of the License at6//7//      http://www.apache.org/licenses/LICENSE-2.08//9// Unless required by applicable law or agreed to in writing, software10// distributed under the License is distributed on an "AS IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14package cel15import (16	"context"17	"fmt"18	"math"19	"sync"20	exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"21	"github.com/google/cel-go/common/types"22	"github.com/google/cel-go/common/types/ref"23	"github.com/google/cel-go/interpreter"24)25// Program is an evaluable view of an Ast.26type Program interface {27	// Eval returns the result of an evaluation of the Ast and environment against the input vars.28	//29	// The vars value may either be an `interpreter.Activation` or a `map[string]interface{}`.30	//31	// If the `OptTrackState`, `OptTrackCost` or `OptExhaustiveEval` flags are used, the `details` response will32	// be non-nil. Given this caveat on `details`, the return state from evaluation will be:33	//34	// *  `val`, `details`, `nil` - Successful evaluation of a non-error result.35	// *  `val`, `details`, `err` - Successful evaluation to an error result.36	// *  `nil`, `details`, `err` - Unsuccessful evaluation.37	//38	// An unsuccessful evaluation is typically the result of a series of incompatible `EnvOption`39	// or `ProgramOption` values used in the creation of the evaluation environment or executable40	// program.41	Eval(interface{}) (ref.Val, *EvalDetails, error)42	// ContextEval evaluates the program with a set of input variables and a context object in order43	// to support cancellation and timeouts. This method must be used in conjunction with the44	// InterruptCheckFrequency() option for cancellation interrupts to be impact evaluation.45	//46	// The vars value may either be an `interpreter.Activation` or `map[string]interface{}`.47	//48	// The output contract for `ContextEval` is otherwise identical to the `Eval` method.49	ContextEval(context.Context, interface{}) (ref.Val, *EvalDetails, error)50}51// NoVars returns an empty Activation.52func NoVars() interpreter.Activation {53	return interpreter.EmptyActivation()54}55// PartialVars returns a PartialActivation which contains variables and a set of AttributePattern56// values that indicate variables or parts of variables whose value are not yet known.57//58// The `vars` value may either be an interpreter.Activation or any valid input to the59// interpreter.NewActivation call.60func PartialVars(vars interface{},61	unknowns ...*interpreter.AttributePattern) (interpreter.PartialActivation, error) {62	return interpreter.NewPartialActivation(vars, unknowns...)63}64// AttributePattern returns an AttributePattern that matches a top-level variable. The pattern is65// mutable, and its methods support the specification of one or more qualifier patterns.66//67// For example, the AttributePattern(`a`).QualString(`b`) represents a variable access `a` with a68// string field or index qualification `b`. This pattern will match Attributes `a`, and `a.b`,69// but not `a.c`.70//71// When using a CEL expression within a container, e.g. a package or namespace, the variable name72// in the pattern must match the qualified name produced during the variable namespace resolution.73// For example, when variable `a` is declared within an expression whose container is `ns.app`, the74// fully qualified variable name may be `ns.app.a`, `ns.a`, or `a` per the CEL namespace resolution75// rules. Pick the fully qualified variable name that makes sense within the container as the76// AttributePattern `varName` argument.77//78// See the interpreter.AttributePattern and interpreter.AttributeQualifierPattern for more info79// about how to create and manipulate AttributePattern values.80func AttributePattern(varName string) *interpreter.AttributePattern {81	return interpreter.NewAttributePattern(varName)82}83// EvalDetails holds additional information observed during the Eval() call.84type EvalDetails struct {85	state       interpreter.EvalState86	costTracker *interpreter.CostTracker87}88// State of the evaluation, non-nil if the OptTrackState or OptExhaustiveEval is specified89// within EvalOptions.90func (ed *EvalDetails) State() interpreter.EvalState {91	return ed.state92}93// ActualCost returns the tracked cost through the course of execution when `CostTracking` is enabled.94// Otherwise, returns nil if the cost was not enabled.95func (ed *EvalDetails) ActualCost() *uint64 {96	if ed.costTracker == nil {97		return nil98	}99	cost := ed.costTracker.ActualCost()100	return &cost101}102// prog is the internal implementation of the Program interface.103type prog struct {104	*Env105	evalOpts                EvalOption106	defaultVars             interpreter.Activation107	dispatcher              interpreter.Dispatcher108	interpreter             interpreter.Interpreter109	interruptCheckFrequency uint110	// Intermediate state used to configure the InterpretableDecorator set provided111	// to the initInterpretable call.112	decorators         []interpreter.InterpretableDecorator113	regexOptimizations []*interpreter.RegexOptimization114	// Interpretable configured from an Ast and aggregate decorator set based on program options.115	interpretable     interpreter.Interpretable116	callCostEstimator interpreter.ActualCostEstimator117	costLimit         *uint64118}119func (p *prog) clone() *prog {120	return &prog{121		Env:                     p.Env,122		evalOpts:                p.evalOpts,123		defaultVars:             p.defaultVars,124		dispatcher:              p.dispatcher,125		interpreter:             p.interpreter,126		interruptCheckFrequency: p.interruptCheckFrequency,127	}128}129// newProgram creates a program instance with an environment, an ast, and an optional list of130// ProgramOption values.131//132// If the program cannot be configured the prog will be nil, with a non-nil error response.133func newProgram(e *Env, ast *Ast, opts []ProgramOption) (Program, error) {134	// Build the dispatcher, interpreter, and default program value.135	disp := interpreter.NewDispatcher()136	// Ensure the default attribute factory is set after the adapter and provider are137	// configured.138	p := &prog{139		Env:        e,140		decorators: []interpreter.InterpretableDecorator{},141		dispatcher: disp,142	}143	// Configure the program via the ProgramOption values.144	var err error145	for _, opt := range opts {146		p, err = opt(p)147		if err != nil {148			return nil, err149		}150	}151	// Set the attribute factory after the options have been set.152	var attrFactory interpreter.AttributeFactory153	if p.evalOpts&OptPartialEval == OptPartialEval {154		attrFactory = interpreter.NewPartialAttributeFactory(e.Container, e.adapter, e.provider)155	} else {156		attrFactory = interpreter.NewAttributeFactory(e.Container, e.adapter, e.provider)157	}158	interp := interpreter.NewInterpreter(disp, e.Container, e.provider, e.adapter, attrFactory)159	p.interpreter = interp160	// Translate the EvalOption flags into InterpretableDecorator instances.161	decorators := make([]interpreter.InterpretableDecorator, len(p.decorators))162	copy(decorators, p.decorators)163	// Enable interrupt checking if there's a non-zero check frequency164	if p.interruptCheckFrequency > 0 {165		decorators = append(decorators, interpreter.InterruptableEval())166	}167	// Enable constant folding first.168	if p.evalOpts&OptOptimize == OptOptimize {169		decorators = append(decorators, interpreter.Optimize())170		p.regexOptimizations = append(p.regexOptimizations, interpreter.MatchesRegexOptimization)171	}172	// Enable regex compilation of constants immediately after folding constants.173	if len(p.regexOptimizations) > 0 {174		decorators = append(decorators, interpreter.CompileRegexConstants(p.regexOptimizations...))175	}176	// Enable exhaustive eval, state tracking and cost tracking last since they require a factory.177	if p.evalOpts&(OptExhaustiveEval|OptTrackState|OptTrackCost) != 0 {178		factory := func(state interpreter.EvalState, costTracker *interpreter.CostTracker) (Program, error) {179			costTracker.Estimator = p.callCostEstimator180			costTracker.Limit = p.costLimit181			decs := decorators182			var observers []interpreter.EvalObserver183			if p.evalOpts&(OptExhaustiveEval|OptTrackState) != 0 {184				// EvalStateObserver is required for OptExhaustiveEval.185				observers = append(observers, interpreter.EvalStateObserver(state))186			}187			if p.evalOpts&OptTrackCost == OptTrackCost {188				observers = append(observers, interpreter.CostObserver(costTracker))189			}190			// Enable exhaustive eval over a basic observer since it offers a superset of features.191			if p.evalOpts&OptExhaustiveEval == OptExhaustiveEval {192				decs = append(decs, interpreter.ExhaustiveEval(), interpreter.Observe(observers...))193			} else if len(observers) > 0 {194				decs = append(decs, interpreter.Observe(observers...))195			}196			return p.clone().initInterpretable(ast, decs)197		}198		return newProgGen(factory)199	}200	return p.initInterpretable(ast, decorators)201}202func (p *prog) initInterpretable(ast *Ast, decs []interpreter.InterpretableDecorator) (*prog, error) {203	// Unchecked programs do not contain type and reference information and may be slower to execute.204	if !ast.IsChecked() {205		interpretable, err :=206			p.interpreter.NewUncheckedInterpretable(ast.Expr(), decs...)207		if err != nil {208			return nil, err209		}210		p.interpretable = interpretable211		return p, nil212	}213	// When the AST has been checked it contains metadata that can be used to speed up program execution.214	var checked *exprpb.CheckedExpr215	checked, err := AstToCheckedExpr(ast)216	if err != nil {217		return nil, err218	}219	interpretable, err := p.interpreter.NewInterpretable(checked, decs...)220	if err != nil {221		return nil, err222	}223	p.interpretable = interpretable224	return p, nil225}226// Eval implements the Program interface method.227func (p *prog) Eval(input interface{}) (v ref.Val, det *EvalDetails, err error) {228	// Configure error recovery for unexpected panics during evaluation. Note, the use of named229	// return values makes it possible to modify the error response during the recovery230	// function.231	defer func() {232		if r := recover(); r != nil {233			switch t := r.(type) {234			case interpreter.EvalCancelledError:235				err = t236			default:237				err = fmt.Errorf("internal error: %v", r)238			}239		}240	}()241	// Build a hierarchical activation if there are default vars set.242	var vars interpreter.Activation243	switch v := input.(type) {244	case interpreter.Activation:245		vars = v246	case map[string]interface{}:247		vars = activationPool.Setup(v)248		defer activationPool.Put(vars)249	default:250		return nil, nil, fmt.Errorf("invalid input, wanted Activation or map[string]interface{}, got: (%T)%v", input, input)251	}252	if p.defaultVars != nil {253		vars = interpreter.NewHierarchicalActivation(p.defaultVars, vars)254	}255	v = p.interpretable.Eval(vars)256	// The output of an internal Eval may have a value (`v`) that is a types.Err. This step257	// translates the CEL value to a Go error response. This interface does not quite match the258	// RPC signature which allows for multiple errors to be returned, but should be sufficient.259	if types.IsError(v) {260		err = v.(*types.Err)261	}262	return263}264// ContextEval implements the Program interface.265func (p *prog) ContextEval(ctx context.Context, input interface{}) (ref.Val, *EvalDetails, error) {266	if ctx == nil {267		return nil, nil, fmt.Errorf("context can not be nil")268	}269	// Configure the input, making sure to wrap Activation inputs in the special ctxActivation which270	// exposes the #interrupted variable and manages rate-limited checks of the ctx.Done() state.271	var vars interpreter.Activation272	switch v := input.(type) {273	case interpreter.Activation:274		vars = ctxActivationPool.Setup(v, ctx.Done(), p.interruptCheckFrequency)275		defer ctxActivationPool.Put(vars)276	case map[string]interface{}:277		rawVars := activationPool.Setup(v)278		defer activationPool.Put(rawVars)279		vars = ctxActivationPool.Setup(rawVars, ctx.Done(), p.interruptCheckFrequency)280		defer ctxActivationPool.Put(vars)281	default:282		return nil, nil, fmt.Errorf("invalid input, wanted Activation or map[string]interface{}, got: (%T)%v", input, input)283	}284	return p.Eval(vars)285}286// Cost implements the Coster interface method.287func (p *prog) Cost() (min, max int64) {288	return estimateCost(p.interpretable)289}290// progFactory is a helper alias for marking a program creation factory function.291type progFactory func(interpreter.EvalState, *interpreter.CostTracker) (Program, error)292// progGen holds a reference to a progFactory instance and implements the Program interface.293type progGen struct {294	factory progFactory295}296// newProgGen tests the factory object by calling it once and returns a factory-based Program if297// the test is successful.298func newProgGen(factory progFactory) (Program, error) {299	// Test the factory to make sure that configuration errors are spotted at config300	_, err := factory(interpreter.NewEvalState(), &interpreter.CostTracker{})301	if err != nil {302		return nil, err303	}304	return &progGen{factory: factory}, nil305}306// Eval implements the Program interface method.307func (gen *progGen) Eval(input interface{}) (ref.Val, *EvalDetails, error) {308	// The factory based Eval() differs from the standard evaluation model in that it generates a309	// new EvalState instance for each call to ensure that unique evaluations yield unique stateful310	// results.311	state := interpreter.NewEvalState()312	costTracker := &interpreter.CostTracker{}313	det := &EvalDetails{state: state, costTracker: costTracker}314	// Generate a new instance of the interpretable using the factory configured during the call to315	// newProgram(). It is incredibly unlikely that the factory call will generate an error given316	// the factory test performed within the Program() call.317	p, err := gen.factory(state, costTracker)318	if err != nil {319		return nil, det, err320	}321	// Evaluate the input, returning the result and the 'state' within EvalDetails.322	v, _, err := p.Eval(input)323	if err != nil {324		return v, det, err325	}326	return v, det, nil327}328// ContextEval implements the Program interface method.329func (gen *progGen) ContextEval(ctx context.Context, input interface{}) (ref.Val, *EvalDetails, error) {330	if ctx == nil {331		return nil, nil, fmt.Errorf("context can not be nil")332	}333	// The factory based Eval() differs from the standard evaluation model in that it generates a334	// new EvalState instance for each call to ensure that unique evaluations yield unique stateful335	// results.336	state := interpreter.NewEvalState()337	costTracker := &interpreter.CostTracker{}338	det := &EvalDetails{state: state, costTracker: costTracker}339	// Generate a new instance of the interpretable using the factory configured during the call to340	// newProgram(). It is incredibly unlikely that the factory call will generate an error given341	// the factory test performed within the Program() call.342	p, err := gen.factory(state, costTracker)343	if err != nil {344		return nil, det, err345	}346	// Evaluate the input, returning the result and the 'state' within EvalDetails.347	v, _, err := p.ContextEval(ctx, input)348	if err != nil {349		return v, det, err350	}351	return v, det, nil352}353// Cost implements the Coster interface method.354func (gen *progGen) Cost() (min, max int64) {355	// Use an empty state value since no evaluation is performed.356	p, err := gen.factory(emptyEvalState, nil)357	if err != nil {358		return 0, math.MaxInt64359	}360	return estimateCost(p)361}362// EstimateCost returns the heuristic cost interval for the program.363func EstimateCost(p Program) (min, max int64) {364	return estimateCost(p)365}366func estimateCost(i interface{}) (min, max int64) {367	c, ok := i.(interpreter.Coster)368	if !ok {369		return 0, math.MaxInt64370	}371	return c.Cost()372}373type ctxEvalActivation struct {374	parent                  interpreter.Activation375	interrupt               <-chan struct{}376	interruptCheckCount     uint377	interruptCheckFrequency uint378}379// ResolveName implements the Activation interface method, but adds a special #interrupted variable380// which is capable of testing whether a 'done' signal is provided from a context.Context channel.381func (a *ctxEvalActivation) ResolveName(name string) (interface{}, bool) {382	if name == "#interrupted" {383		a.interruptCheckCount++384		if a.interruptCheckCount%a.interruptCheckFrequency == 0 {385			select {386			case <-a.interrupt:387				return true, true388			default:389				return nil, false390			}391		}392		return nil, false393	}394	return a.parent.ResolveName(name)395}396func (a *ctxEvalActivation) Parent() interpreter.Activation {397	return a.parent398}399func newCtxEvalActivationPool() *ctxEvalActivationPool {400	return &ctxEvalActivationPool{401		Pool: sync.Pool{402			New: func() interface{} {403				return &ctxEvalActivation{}404			},405		},406	}407}408type ctxEvalActivationPool struct {409	sync.Pool410}411// Setup initializes a pooled Activation with the ability check for context.Context cancellation412func (p *ctxEvalActivationPool) Setup(vars interpreter.Activation, done <-chan struct{}, interruptCheckRate uint) *ctxEvalActivation {413	a := p.Pool.Get().(*ctxEvalActivation)414	a.parent = vars415	a.interrupt = done416	a.interruptCheckCount = 0417	a.interruptCheckFrequency = interruptCheckRate418	return a419}420type evalActivation struct {421	vars     map[string]interface{}422	lazyVars map[string]interface{}423}424// ResolveName looks up the value of the input variable name, if found.425//426// Lazy bindings may be supplied within the map-based input in either of the following forms:427// - func() interface{}428// - func() ref.Val429//430// The lazy binding will only be invoked once per evaluation.431//432// Values which are not represented as ref.Val types on input may be adapted to a ref.Val using433// the ref.TypeAdapter configured in the environment.434func (a *evalActivation) ResolveName(name string) (interface{}, bool) {435	v, found := a.vars[name]436	if !found {437		return nil, false438	}439	switch obj := v.(type) {440	case func() ref.Val:441		if resolved, found := a.lazyVars[name]; found {442			return resolved, true443		}444		lazy := obj()445		a.lazyVars[name] = lazy446		return lazy, true447	case func() interface{}:448		if resolved, found := a.lazyVars[name]; found {449			return resolved, true450		}451		lazy := obj()452		a.lazyVars[name] = lazy453		return lazy, true454	default:455		return obj, true456	}457}458// Parent implements the interpreter.Activation interface459func (a *evalActivation) Parent() interpreter.Activation {460	return nil461}462func newEvalActivationPool() *evalActivationPool {463	return &evalActivationPool{464		Pool: sync.Pool{465			New: func() interface{} {466				return &evalActivation{lazyVars: make(map[string]interface{})}467			},468		},469	}470}471type evalActivationPool struct {472	sync.Pool473}474// Setup initializes a pooled Activation object with the map input.475func (p *evalActivationPool) Setup(vars map[string]interface{}) *evalActivation {476	a := p.Pool.Get().(*evalActivation)477	a.vars = vars478	return a479}480func (p *evalActivationPool) Put(value interface{}) {481	a := value.(*evalActivation)482	for k := range a.lazyVars {483		delete(a.lazyVars, k)484	}485	p.Pool.Put(a)486}487var (488	emptyEvalState = interpreter.NewEvalState()489	// activationPool is an internally managed pool of Activation values that wrap map[string]interface{} inputs490	activationPool = newEvalActivationPool()491	// ctxActivationPool is an internally managed pool of Activation values that expose a special #interrupted variable492	ctxActivationPool = newCtxEvalActivationPool()493)...

call_selector.go

Source:call_selector.go

...29	"open":         0,30	"openat":       1,31	"syz_open_dev": 0,32}33type callSelector interface {34	Select(call *parser.Syscall) *prog.Syscall35}36func newSelectors(target *prog.Target, returnCache returnCache) []callSelector {37	sc := newSelectorCommon(target, returnCache)38	return []callSelector{39		&defaultCallSelector{sc},40		&openCallSelector{sc},41	}42}43type selectorCommon struct {44	target      *prog.Target45	returnCache returnCache46	callCache   map[string][]*prog.Syscall47}48func newSelectorCommon(target *prog.Target, returnCache returnCache) *selectorCommon {49	return &selectorCommon{50		target:      target,51		returnCache: returnCache,52		callCache:   make(map[string][]*prog.Syscall),53	}54}55// matches strace file string with a constant string in openat or syz_open_dev56// if the string in openat or syz_open_dev has a # then this method will57// return the corresponding  id from the strace string58func (cs *selectorCommon) matchFilename(syzFile, straceFile []byte) (bool, int) {59	syzFile = bytes.Trim(syzFile, "\x00")60	straceFile = bytes.Trim(straceFile, "\x00")61	if len(syzFile) != len(straceFile) {62		return false, -163	}64	var id []byte65	dev := -166	for i, c := range syzFile {67		x := straceFile[i]68		if c == x {69			continue70		}71		if c != '#' || !unicode.IsDigit(rune(x)) {72			return false, -173		}74		id = append(id, x)75	}76	if len(id) > 0 {77		dev, _ = strconv.Atoi(string(id))78	}79	return true, dev80}81// callSet returns all syscalls with the given name.82func (cs *selectorCommon) callSet(callName string) []*prog.Syscall {83	calls, ok := cs.callCache[callName]84	if ok {85		return calls86	}87	for _, call := range cs.target.Syscalls {88		if call.CallName == callName {89			calls = append(calls, call)90		}91	}92	cs.callCache[callName] = calls93	return calls94}95type openCallSelector struct {96	*selectorCommon97}98// Select returns the best matching descrimination for this syscall.99func (cs *openCallSelector) Select(call *parser.Syscall) *prog.Syscall {100	if _, ok := openDiscriminatorArgs[call.CallName]; !ok {101		return nil102	}103	for callName := range openDiscriminatorArgs {104		for _, variant := range cs.callSet(callName) {105			match, devID := cs.matchOpen(variant, call)106			if !match {107				continue108			}109			if call.CallName == "open" && callName == "openat" {110				cwd := parser.Constant(cs.target.ConstMap["AT_FDCWD"])111				call.Args = append([]parser.IrType{cwd}, call.Args...)112				return variant113			}114			if match && call.CallName == "open" && callName == "syz_open_dev" {115				if devID < 0 {116					return variant117				}118				args := []parser.IrType{call.Args[0], parser.Constant(uint64(devID))}119				call.Args = append(args, call.Args[1:]...)120				return variant121			}122		}123	}124	return nil125}126func (cs *openCallSelector) matchOpen(meta *prog.Syscall, call *parser.Syscall) (bool, int) {127	straceFileArg := call.Args[openDiscriminatorArgs[call.CallName]]128	syzFileArg := meta.Args[openDiscriminatorArgs[meta.CallName]]129	straceBuf := straceFileArg.(*parser.BufferType).Val130	syzBuf := syzFileArg.(*prog.PtrType).Type.(*prog.BufferType)131	if syzBuf.Kind != prog.BufferString {132		return false, -1133	}134	for _, val := range syzBuf.Values {135		match, devID := cs.matchFilename([]byte(val), []byte(straceBuf))136		if match {137			return match, devID138		}139	}140	return false, -1141}142type defaultCallSelector struct {143	*selectorCommon144}145// Select returns the best matching descrimination for this syscall.146func (cs *defaultCallSelector) Select(call *parser.Syscall) *prog.Syscall {147	var match *prog.Syscall148	discriminators := discriminatorArgs[call.CallName]149	if len(discriminators) == 0 {150		return nil151	}152	score := 0153	for _, meta := range cs.callSet(call.CallName) {154		if score1 := cs.matchCall(meta, call, discriminators); score1 > score {155			match, score = meta, score1156		}157	}158	return match159}160// matchCall returns match score between meta and call.161// Higher score means better match, -1 if they are not matching at all.162func (cs *defaultCallSelector) matchCall(meta *prog.Syscall, call *parser.Syscall, discriminators []int) int {163	score := 0164	for _, i := range discriminators {165		if i >= len(meta.Args) || i >= len(call.Args) {166			return -1167		}168		typ := meta.Args[i]169		arg := call.Args[i]170		switch t := typ.(type) {171		case *prog.ConstType:172			// Consts must match precisely.173			constant, ok := arg.(parser.Constant)174			if !ok || constant.Val() != t.Val {175				return -1176			}...

Select

Using AI Code Generation

1import (2func main() {3	proggen.Select()4	fmt.Println("Hello, playground")5}6import (7func main() {8	proggen.Select()9	fmt.Println("Hello, playground")10}11import (12func main() {13	proggen.Select()14	fmt.Println("Hello, playground")15}16import (17func main() {18	proggen.Select()19	fmt.Println("Hello, playground")20}21import (22func main() {23	proggen.Select()24	fmt.Println("Hello, playground")25}26import (27func main() {28	proggen.Select()29	fmt.Println("Hello, playground")30}31import (32func main() {33	proggen.Select()34	fmt.Println("Hello, playground")35}36import (37func main() {38	proggen.Select()39	fmt.Println("Hello, playground")40}41import (42func main() {43	proggen.Select()44	fmt.Println("Hello, playground")45}46import (47func main() {48	proggen.Select()49	fmt.Println("Hello, playground")50}51import (

Select

Using AI Code Generation

1import "fmt"2import "proggen"3func main() {4    fmt.Print("Enter 1st number: ")5    fmt.Scan(&x)6    fmt.Print("Enter 2nd number: ")7    fmt.Scan(&y)8    fmt.Print("Enter 3rd number: ")9    fmt.Scan(&z)10    fmt.Print("Enter 4th number: ")11    fmt.Scan(&i)12    fmt.Print("Enter 5th number: ")13    fmt.Scan(&j)14    fmt.Print("Enter 6th number: ")15    fmt.Scan(&k)16    fmt.Print("Enter 7th number: ")17    fmt.Scan(&t)18    fmt.Print("Enter 8th number: ")19    fmt.Scan(&u)20    fmt.Print("Enter 9th number: ")21    fmt.Scan(&v)22    fmt.Print("Enter 10th number: ")23    fmt.Scan(&w)24    fmt.Print("The numbers in ascending order are: ")25    fmt.Print(proggen.Select(x, y, z, i, j, k, t, u, v, w))26}27import "fmt"28import "proggen"29func main() {30    fmt.Print("Enter 1st number: ")31    fmt.Scan(&x)32    fmt.Print("Enter 2nd number: ")33    fmt.Scan(&y)34    fmt.Print("Enter 3rd number: ")35    fmt.Scan(&z)36    fmt.Print("Enter 4th number: ")37    fmt.Scan(&i)38    fmt.Print("Enter 5th number: ")39    fmt.Scan(&j)40    fmt.Print("Enter 6th number: ")41    fmt.Scan(&k)42    fmt.Print("Enter 7th number: ")43    fmt.Scan(&t)44    fmt.Print("Enter 8th number: ")45    fmt.Scan(&u)

Select

Using AI Code Generation

1import (2func main() {3    fmt.Println("Welcome to the random number generator")4    fmt.Println("Enter the number of random numbers to be generated:")5    fmt.Scanln(&n)6    for i := 0; i < n; i++ {7        fmt.Println(rand.Intn(100))8    }9}

Select

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println("Enter a number:")4    fmt.Scanln(&a)5    fmt.Println("The number you entered is:", a)6}7fmt.Scanln() Method Example8import "fmt"9func main() {10    for {11        fmt.Println("Enter a number:")12        fmt.Scanln(&a)13        if a < 0 {14        }15    }16    fmt.Println("The total of all the numbers you entered is:", total)17}18The fmt.Scanf() method takes the format string and the addresses of the variables where the input is to be stored as arguments. The format

Select

Using AI Code Generation

1import (2func main() {3    fmt.Println(proggen.Select("number"))4}5import (6func main() {7    fmt.Println(proggen.Select("number", "2"))8}9import (10func main() {11    fmt.Println(proggen.Select("number", "2", "3"))12}

Select

Using AI Code Generation

1import (2func main() {3	pg := proggen.NewProgGen()4	fmt.Println(pg.Select("string", 10))5	fmt.Println(pg.Select("number", 10))6	fmt.Println(pg.Select("alpha", 10))7	fmt.Println(pg.Select("alphanumeric", 10))8}

Select

Using AI Code Generation

1import (2func main() {3	numbers := make([]int, 100)4	for i := 0; i < 100; i++ {5	}6	rand.Seed(time.Now().UnixNano())7	n := rand.Intn(100)8	fmt.Println(proggen.Select(numbers, n))9}

Select

Using AI Code Generation

1import(2type proggen struct{3}4func (p proggen)Generate() []int{5	rand.Seed(p.seed)6	for i:=0; i<10; i++{7		nums = append(nums, rand.Intn(500))8	}9}10func (p proggen)Select() int{11	nums := p.Generate()12	return nums[rand.Intn(len(nums))]13}14func main(){15	p.seed = time.Now().UnixNano()16	fmt.Println(p.Select())17}18import(19func main(){20	go func(){21		for{22			fmt.Println(time.Now())23			time.Sleep(time.Second * 5)24		}25	}()26	time.Sleep(time.Second * 20)27}

Select

Using AI Code Generation

1import (2type proggen struct{3}4func (pg proggen) Select() string{5	rand.Seed(time.Now().Unix())6	randnum := rand.Intn(2)7	if randnum == 0{8	}else{9	}10	return fmt.Sprintf("%s is a %s programming language", pg.progname, pg.progtype)11}12func main(){13	fmt.Println(pg.Select())14}15import "fmt"16type proggen struct{17}18func (pg proggen) Select() string{19}20func main(){21	fmt.Println(pg.Select())22}23import "fmt"24type proggen struct{25}26func (pg proggen) Select() string{27}28func main(){29	fmt.Println(pg.Select())30}31import "fmt"32type proggen struct{33}34func (pg proggen) Select() string{35}36func main(){37	fmt.Println(pg.Select())38}39import "fmt"40type proggen struct{41}42func (pg proggen) Select() string{43}44func main(){45	fmt.Println(pg.Select())46}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.