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How to use Append method of prog Package

Best Syzkaller code snippet using prog.Append

re1.go

Source:re1.go

1// Package re1 implements a very simple regular expression language.2// The language is inspired by plan9 regular expressions3// (https://9fans.github.io/plan9port/man/man7/regexp.html),4// rsc's regexp blog posts (https://swtch.com/~rsc/regexp),5// and nominally by the much more sohpistocated RE2 library6// (https://github.com/google/re2).7//8// The grammar is:9// 	regexp = choice.10// 	choice = concat [ "|" choice ].11// 	concat = repeat [ concat ].12// 	repeat = term { "*" | "+" | "?" }.13// 	term = "." | "^" | "$" | "(" regexp ")" | charclass | literal.14// 	charclass = "[" [ "^" ] ( classlit [ "-" classlit ] ) { classlit [ "-" classlit ] } "]".15// 	A literal is any non-meta rune or a rune preceded by \.16// 	A classlit is any non-"]", non-"-" rune or a rune preceded by \.17//18// The meta characters are:19// 	| choice20// 	* zero or more, greedy21// 	+ one or more, greedy22// 	? zero or one23// 	. any non-newline rune24// 	^ beginning of file or line25// 	$ end of file or line26// 	() capturing group27// 	[] character class (^ negates, - is a range)28// 	\n newline29// 	\t tab30// 	\ otherwise is the literal of the following rune31// 	  or is \ itself if there is no following rune.32package re133import (34	"errors"35	"io"36	"strings"37	"unicode/utf8"38)39// Regexp is a compiled regular expression.40type Regexp struct {41	prog   []instr42	ncap   int43	class  [][][2]rune44	source string45}46// Opts are compile-time options. The zero value is default.47type Opts struct {48	// Reverse compiles the expression for reverse matching.49	// This swaps the order of concatenations, and it swaps ^ and $.50	Reverse bool51	// Delimiter specifies a rune that delimits parsing if unescaped.52	Delimiter rune53	// ID is a user-specfied ID to identify the the regexp.54	// This is used to distinguish which regexp matched55	// when concatenating multiple regexps into one.56	ID int57}58// New compiles a regular expression.59// The expression is terminated by the end of the string,60// an un-escaped newline,61// or an un-escaped delimiter (if set in opts).62func New(t string, opts Opts) (*Regexp, string, error) {63	src := t64	switch re, t, err := choice(t, 0, opts); {65	case err != nil:66		return nil, "", err67	case re == nil:68		re = &Regexp{}69		fallthrough70	default:71		re = groupProg(re)72		re.prog = append(re.prog, instr{op: match, arg: opts.ID})73		re.source = src74		return re, t, nil75	}76}77const (78	any = -iota79	bol80	eol81	class  // arg is class index82	nclass // arg is class index83	jmp    // arg is jump offset84	fork   // arg is low-priority fork offset (high-priority is 1)85	rfork  // arg is high-priority fork offset (low-priority is 1)86	save   // arg is save-to index87	match  // arg is the id of the matching regexp88)89type instr struct {90	op  int91	arg int92}93func choice(t0 string, depth int, opts Opts) (*Regexp, string, error) {94	switch left, t, err := concat(t0, depth, opts); {95	case err != nil:96		return nil, "", err97	case peek(t) != '|':98		return left, t, nil99	case left == nil:100		return nil, "", errors.New("unexpected |")101	default:102		_, t = next(t) // eat |103		var right *Regexp104		if right, t, err = choice(t, depth, opts); err != nil {105			return nil, "", err106		}107		return choiceProg(left, right), t, nil108	}109}110func concat(t string, depth int, opts Opts) (*Regexp, string, error) {111	left, t, err := repeat(t, depth, opts)112	if left == nil || err != nil {113		return left, t, err114	}115	var right *Regexp116	switch right, t, err = concat(t, depth, opts); {117	case err != nil:118		return nil, "", err119	case right != nil:120		left = catProg(left, right, opts.Reverse)121		fallthrough122	default:123		return left, t, err124	}125}126func repeat(t string, depth int, opts Opts) (*Regexp, string, error) {127	left, t, err := term(t, depth, opts)128	if left == nil || err != nil {129		return left, t, err130	}131	for strings.ContainsRune("*+?", peek(t)) {132		var r rune133		r, t = next(t)134		left = repProg(left, r)135	}136	return left, t, nil137}138func term(t0 string, depth int, opts Opts) (*Regexp, string, error) {139	switch r, t := next(t0); r {140	case eof, '\n', opts.Delimiter:141		return nil, t, nil142	case '\\':143		r, t = esc(t)144		fallthrough145	default:146		return opProg(int(r)), t, nil147	case '.':148		return opProg(any), t, nil149	case '^':150		if opts.Reverse {151			return opProg(eol), t, nil152		}153		return opProg(bol), t, nil154	case '$':155		if opts.Reverse {156			return opProg(bol), t, nil157		}158		return opProg(eol), t, nil159	case '(':160		return group(t, depth, opts)161	case '[':162		return charclass(t)163	case '|':164		return nil, t0, nil165	case ')':166		if depth == 0 {167			return nil, t, errors.New("unopened )")168		}169		return nil, t0, nil170	case '*', '+', '?':171		return nil, "", errors.New("unexpected " + string([]rune{r}))172	}173}174func group(t string, depth int, opts Opts) (*Regexp, string, error) {175	left, t, err := choice(t, depth+1, opts)176	switch r, t := next(t); {177	case err != nil:178		return nil, "", err179	case r != ')':180		return nil, "", errors.New("unclosed (")181	case left == nil:182		left = &Regexp{}183		fallthrough184	default:185		return groupProg(left), t, nil186	}187}188func charclass(t string) (*Regexp, string, error) {189	op := class190	if peek(t) == '^' {191		_, t = next(t) // eat ^192		op = nclass193	}194	var r, p rune195	var cl [][2]rune196	for len(t) > 0 {197		switch r, t = next(t); r {198		case ']':199			if p != 0 {200				cl = append(cl, [2]rune{p, p})201			}202			if len(cl) == 0 {203				return nil, "", errors.New("empty charclass")204			}205			return charClassProg(op, cl), t, nil206		case '-':207			if p == 0 || peek(t) == ']' || peek(t) == '-' {208				return nil, "", errors.New("bad range")209			}210			r, t = next(t)211			if r == '\\' {212				r, t = esc(t)213			}214			if p >= r {215				return nil, "", errors.New("bad range")216			}217			cl = append(cl, [2]rune{p, r})218			p = 0219		case '\\':220			r, t = esc(t)221			fallthrough222		default:223			if p != 0 {224				cl = append(cl, [2]rune{p, p})225			}226			p = r227		}228	}229	return nil, "", errors.New("unclosed [")230}231func choiceProg(left, right *Regexp) *Regexp {232	prog := make([]instr, 0, 2+len(left.prog)+len(right.prog))233	prog = append(prog, instr{op: fork, arg: len(left.prog) + 2})234	prog = append(prog, left.prog...)235	left.prog = append(prog, instr{op: jmp, arg: len(right.prog) + 1})236	return catProg(left, right, false)237}238func catProg(left, right *Regexp, rev bool) *Regexp {239	for i := range right.prog {240		instr := &right.prog[i]241		if instr.op == save {242			instr.arg += left.ncap * 2243		}244	}245	if rev {246		left, right = right, left247	}248	for _, instr := range right.prog {249		if instr.op == class || instr.op == nclass {250			instr.arg += len(left.class)251		}252		left.prog = append(left.prog, instr)253	}254	left.ncap += right.ncap255	left.class = append(left.class, right.class...)256	return left257}258func repProg(left *Regexp, op rune) *Regexp {259	prog := make([]instr, 0, len(left.prog)+2)260	switch op {261	case '+':262		prog = append(left.prog, instr{op: rfork, arg: -len(left.prog)})263	case '*':264		prog = []instr{{op: fork, arg: len(left.prog) + 2}}265		prog = append(prog, left.prog...)266		prog = append(prog, instr{op: rfork, arg: -len(prog) + 1})267	case '?':268		prog = []instr{{op: fork, arg: len(left.prog) + 1}}269		prog = append(prog, left.prog...)270	}271	left.prog = prog272	return left273}274func groupProg(left *Regexp) *Regexp {275	prog := make([]instr, 0, len(left.prog)+2)276	prog = append(prog, instr{op: save, arg: 0})277	for _, instr := range left.prog {278		if instr.op == save {279			instr.arg += 2280		}281		prog = append(prog, instr)282	}283	left.prog = append(prog, instr{op: save, arg: 1})284	left.ncap++285	return left286}287func charClassProg(op int, cl [][2]rune) *Regexp {288	return &Regexp{prog: []instr{{op: op}}, class: [][][2]rune{cl}}289}290func opProg(op int) *Regexp { return &Regexp{prog: []instr{{op: op}}} }291const eof = -1292func next(t string) (rune, string) {293	if len(t) == 0 {294		return eof, ""295	}296	r, w := utf8.DecodeRuneInString(t)297	return r, t[w:]298}299func peek(t string) rune {300	r, _ := next(t)301	return r302}303func esc(t string) (rune, string) {304	var r rune305	switch r, t = next(t); r {306	case eof:307		r = '\\'308	case 'n':309		r = '\n'310	case 't':311		r = '\t'312	}313	return r, t314}315// Find returns nil on no match or a slice with pairs of int64s for each sub-expression match (0 is the full match) and the last element is the matching regexp ID.316func (re *Regexp) Find(rr io.RuneReader) []int64 { return run(newVM(re, rr)) }317type vm struct {318	re        *Regexp319	rr        io.RuneReader320	at, lim   int64321	c, n      rune    // cur and next rune.322	seen      []int64 // at for which each pc was last add()ed.323	cur, next []thread324	free      [][]int64325	match     []int64326}327type thread struct {328	pc  int329	mem []int64330}331func newVM(re *Regexp, rr io.RuneReader) *vm {332	v := &vm{re: re, rr: rr, lim: -1, c: eof, n: eof}333	v.seen = make([]int64, len(re.prog))334	for i := range v.seen {335		v.seen[i] = -1336	}337	read(v)338	return v339}340func newMem(v *vm, init []int64) (m []int64) {341	if n := len(v.free); n > 0 {342		m, v.free = v.free[n-1], v.free[:n-1]343	} else {344		m = make([]int64, 2*v.re.ncap+1 /* match ID */)345	}346	if init != nil {347		copy(m, init)348		return m349	}350	for i := range m {351		m[i] = -1352	}353	return m354}355func run(v *vm) []int64 {356	for {357		if v.match == nil {358			add(v, 0, newMem(v, nil))359		}360		if v.lim >= 0 && v.at >= v.lim {361			// Check this after add() to allow empty regexps to match empty.362			return v.match363		}364		read(v)365		v.cur, v.next = v.next, v.cur[:0]366		for _, t := range v.cur {367			step(v, t.pc, t.mem)368		}369		if v.c == eof || (v.match != nil && len(v.next) == 0) {370			return v.match371		}372	}373}374func read(v *vm) {375	if v.n != eof {376		v.at += int64(utf8.RuneLen(v.n))377	}378	v.c = v.n379	var err error380	if v.n, _, err = v.rr.ReadRune(); err != nil {381		v.n = eof382	}383}384func step(v *vm, pc int, mem []int64) {385	if !accepts(v, v.re.prog[pc]) {386		v.free = append(v.free, mem)387		return388	}389	add(v, pc+1, mem)390}391func accepts(v *vm, instr instr) bool {392	switch instr.op {393	case any:394		return v.c != '\n' && v.c != eof395	case class, nclass:396		cl := v.re.class[instr.arg]397		return classAccepts(v.c, cl, instr.op == nclass)398	default:399		return int(v.c) == instr.op400	}401}402func classAccepts(r rune, class [][2]rune, neg bool) bool {403	if r == eof {404		return false405	}406	for _, c := range class {407		if c[0] <= r && r <= c[1] {408			return !neg409		}410	}411	return neg412}413func add(v *vm, pc int, mem []int64) {414	if v.seen[pc] == v.at {415		v.free = append(v.free, mem)416		return417	}418	v.seen[pc] = v.at419	_add(v, pc, mem)420}421func _add(v *vm, pc int, mem []int64) {422	switch instr := v.re.prog[pc]; instr.op {423	default:424		v.next = append(v.next, thread{pc: pc, mem: mem})425	case jmp:426		add(v, pc+instr.arg, mem)427	case fork:428		clone := newMem(v, mem)429		add(v, pc+1, mem)430		add(v, pc+instr.arg, clone)431	case rfork:432		clone := newMem(v, mem)433		add(v, pc+instr.arg, mem)434		add(v, pc+1, clone)435	case save:436		mem[instr.arg] = v.at437		add(v, pc+1, mem)438	case bol:439		if v.c != eof && v.c != '\n' {440			v.free = append(v.free, mem)441			return442		}443		add(v, pc+1, mem)444	case eol:445		if v.n != eof && v.n != '\n' {446			v.free = append(v.free, mem)447			return448		}449		add(v, pc+1, mem)450	case match:451		mem[len(mem)-1] = int64(instr.arg)452		setMatch(v, mem)453	}454}455func setMatch(v *vm, mem []int64) {456	switch {457	case v.match == nil:458		v.match = mem459	case mem[0] <= v.match[0] && mem[1] > v.match[1]:460		v.free = append(v.free, v.match)461		v.match = mem462	default:463		v.free = append(v.free, mem)464	}465}...

compile.go

Source:compile.go

1package kbd2import (3	"math"4	"github.com/zyedidia/gpeg/charset"5)6type Pattern interface {7	Compile() Program8}9type AltNode struct {10	s1 Pattern11	s2 Pattern12}13func Alt(s ...Pattern) Pattern {14	acc := s[len(s)-1]15	for i := len(s) - 2; i >= 0; i-- {16		acc = &AltNode{17			s1: s[i],18			s2: acc,19		}20	}21	return acc22}23func (n *AltNode) Compile() Program {24	p1 := n.s1.Compile()25	p2 := n.s2.Compile()26	var prog Program27	prog = append(prog, iSplit{1, len(p1) + 2})28	prog = append(prog, p1...)29	prog = append(prog, iJump{len(p2) + 1})30	prog = append(prog, p2...)31	return prog32}33type SeqNode struct {34	s1 Pattern35	s2 Pattern36}37func Seq(s ...Pattern) Pattern {38	acc := s[0]39	for _, p := range s[1:] {40		acc = &SeqNode{41			s1: acc,42			s2: p,43		}44	}45	return acc46}47func (n *SeqNode) Compile() Program {48	p1 := n.s1.Compile()49	p2 := n.s2.Compile()50	var prog Program51	prog = append(prog, p1...)52	prog = append(prog, p2...)53	return prog54}55type StarNode struct {56	s Pattern57}58func Star(s Pattern) *StarNode {59	return &StarNode{60		s: s,61	}62}63func (n *StarNode) Compile() Program {64	p := n.s.Compile()65	var prog Program66	prog = append(prog, iSplit{1, len(p) + 2})67	prog = append(prog, p...)68	prog = append(prog, iJump{-len(p) - 1})69	return prog70}71type PlusNode struct {72	s Pattern73}74func Plus(s Pattern) *PlusNode {75	return &PlusNode{76		s: s,77	}78}79func (n *PlusNode) Compile() Program {80	p := n.s.Compile()81	var prog Program82	prog = append(prog, p...)83	prog = append(prog, iSplit{-len(p), 1})84	return prog85}86type OptNode struct {87	s Pattern88}89func Opt(s Pattern) *OptNode {90	return &OptNode{91		s: s,92	}93}94func (n *OptNode) Compile() Program {95	p := n.s.Compile()96	var prog Program97	prog = append(prog, iSplit{1, len(p) + 1})98	prog = append(prog, p...)99	return prog100}101type LitNode struct {102	ev Event103}104func Lit(ev Event) *LitNode {105	return &LitNode{106		ev: ev,107	}108}109func MustLit(s string) *LitNode {110	ev, err := ToEvent(s)111	if err != nil {112		panic(err)113	}114	return &LitNode{115		ev: ev,116	}117}118func AnyRune() *LitNode {119	return &LitNode{120		ev: &WildcardRuneEvent{121			Low:  0,122			High: math.MaxInt32,123		},124	}125}126func RangeRune(low, high rune) *LitNode {127	return &LitNode{128		ev: &WildcardRuneEvent{129			Low:  low,130			High: high,131		},132	}133}134func Set(s charset.Set) *LitNode {135	return &LitNode{136		ev: &WildcardRuneSetEvent{137			Set: s,138		},139	}140}141func (n *LitNode) Compile() Program {142	return Program{143		iConsume{144			match: n.ev,145		},146	}147}148type CapNode struct {149	s   Pattern150	cmd string151}152func Cap(n Pattern, cmd string) *CapNode {153	return &CapNode{154		s:   n,155		cmd: cmd,156	}157}158func (c *CapNode) Compile() Program {159	p := c.s.Compile()160	var prog Program161	prog = append(prog, iCapStart{})162	prog = append(prog, p...)163	prog = append(prog, iCapEnd{c.cmd})164	return prog165}166type EndNode struct{}167func End() *EndNode {168	return &EndNode{}169}170func (n *EndNode) Compile() Program {171	return Program{172		iEnd{},173	}174}175type NonTermNode struct {176	name string177}178func NonTerm(name string) Pattern {179	return &NonTermNode{180		name: name,181	}182}183func (n *NonTermNode) Compile() Program {184	var prog Program185	prog = append(prog, iOpenCall{n.name})186	return prog187}188type GrammarNode struct {189	fns  map[string]Pattern190	root string191}192func Grammar(root string, fns map[string]Pattern) Pattern {193	return &GrammarNode{194		fns:  fns,195		root: root,196	}197}198func (n *GrammarNode) Compile() Program {199	var prog Program200	prog = append(prog, iOpenCall{n.root})201	prog = append(prog, iEnd{})202	fnlocs := make(map[string]int)203	i := len(prog)204	for name, fn := range n.fns {205		fnlocs[name] = i206		fnprog := fn.Compile()207		prog = append(prog, fnprog...)208		prog = append(prog, iRet{})209		i += 1 + len(fnprog)210	}211	for j, insn := range prog {212		switch t := insn.(type) {213		case iOpenCall:214			prog[j] = iCall{fnlocs[t.name]}215		}216	}217	return prog218}...

prog.go

Source:prog.go

1package dtfmt2import (3	"errors"4	"time"5)6type prog struct {7	p []byte8}9const (10	opNone      byte = iota11	opCopy1          // copy next byte12	opCopy2          // copy next 2 bytes13	opCopy3          // copy next 3 bytes14	opCopy4          // copy next 4 bytes15	opCopyShort      // [op, len, content[len]]16	opCopyLong       // [op, len1, len, content[len1<<8 + len]]17	opNum            // [op, ft]18	opNumPadded      // [op, ft, digits]19	opTwoDigit       // [op, ft]20	opTextShort      // [op, ft]21	opTextLong       // [op, ft]22)23func (p prog) eval(bytes []byte, ctx *ctx, t time.Time) ([]byte, error) {24	for i := 0; i < len(p.p); {25		op := p.p[i]26		i++27		switch op {28		case opNone:29		case opCopy1:30			bytes = append(bytes, p.p[i])31			i++32		case opCopy2:33			bytes = append(bytes, p.p[i], p.p[i+1])34			i += 235		case opCopy3:36			bytes = append(bytes, p.p[i], p.p[i+1], p.p[i+2])37			i += 338		case opCopy4:39			bytes = append(bytes, p.p[i], p.p[i+1], p.p[i+2], p.p[i+3])40			i += 441		case opCopyShort:42			l := int(p.p[i])43			i++44			bytes = append(bytes, p.p[i:i+l]...)45			i += l46		case opCopyLong:47			l := int(p.p[i])<<8 | int(p.p[i+1])48			i += 249			bytes = append(bytes, p.p[i:i+l]...)50			i += l51		case opNum:52			ft := fieldType(p.p[i])53			i++54			v, err := getIntField(ft, ctx, t)55			if err != nil {56				return bytes, err57			}58			bytes = appendUnpadded(bytes, v)59		case opNumPadded:60			ft, digits := fieldType(p.p[i]), int(p.p[i+1])61			i += 262			v, err := getIntField(ft, ctx, t)63			if err != nil {64				return bytes, err65			}66			bytes = appendPadded(bytes, v, digits)67		case opTwoDigit:68			ft := fieldType(p.p[i])69			i++70			v, err := getIntField(ft, ctx, t)71			if err != nil {72				return bytes, err73			}74			bytes = appendPadded(bytes, v%100, 2)75		case opTextShort:76			ft := fieldType(p.p[i])77			i++78			s, err := getTextFieldShort(ft, ctx, t)79			if err != nil {80				return bytes, err81			}82			bytes = append(bytes, s...)83		case opTextLong:84			ft := fieldType(p.p[i])85			i++86			s, err := getTextField(ft, ctx, t)87			if err != nil {88				return bytes, err89			}90			bytes = append(bytes, s...)91		default:92			return bytes, errors.New("unknown opcode")93		}94	}95	return bytes, nil96}97func makeProg(b ...byte) (prog, error) {98	return prog{b}, nil99}100func makeCopy(b []byte) (prog, error) {101	l := len(b)102	switch l {103	case 0:104		return prog{}, nil105	case 1:106		return makeProg(opCopy1, b[0])107	case 2:108		return makeProg(opCopy2, b[0], b[1])109	case 3:110		return makeProg(opCopy2, b[0], b[1], b[2])111	case 4:112		return makeProg(opCopy2, b[0], b[1], b[2], b[3])113	}114	if l < 256 {115		return prog{append([]byte{opCopyShort, byte(l)}, b...)}, nil116	}117	if l < (1 << 16) {118		l1 := byte(l >> 8)119		l2 := byte(l)120		return prog{append([]byte{opCopyLong, l1, l2}, b...)}, nil121	}122	return prog{}, errors.New("literal too long")123}...

Append

Using AI Code Generation

1import "fmt"2func main() {3    printSlice(s)4    s = append(s, 0)5    printSlice(s)6    s = append(s, 1)7    printSlice(s)8    s = append(s, 2,3,4)9    printSlice(s)10}11func printSlice(s []int) {12    fmt.Printf("len=%d cap=%d %v13", len(s), cap(s), s)14}

Append

Using AI Code Generation

1import "fmt"2type prog struct {3}4func main() {5	p1 := prog{"Go", 2009}6	p2 := prog{"C", 1972}7	p3 := prog{"Python", 1991}8	p4 := prog{"Java", 1995}9	fmt.Println(p1, p2, p3, p4)10	langs := []prog{p1, p2, p3, p4}11	fmt.Println(langs)12	langs = append(langs, prog{"Ruby", 1995})13	fmt.Println(langs)14	langs = append(langs, prog{"JavaScript", 1995}, prog{"C++", 1983})15	fmt.Println(langs)16	x := []prog{{"C#", 2000}, {"PHP", 1994}}17	langs = append(langs, x...)18	fmt.Println(langs)19}20{Go 2009} {C 1972} {Python 1991} {Java 1995}21[{Go 2009} {C 1972} {Python 1991} {Java 1995}]22[{Go 2009} {C 1972} {Python 1991} {Java 1995} {Ruby 1995}]23[{Go 2009} {C 1972} {Python 1991} {Java 1995} {Ruby 1995} {JavaScript 1995} {C++ 1983}]24[{Go 2009} {C 1972} {Python 1991} {Java 1995} {Ruby 1995} {JavaScript 1995} {C++ 1983} {C# 2000} {PHP 1994}]25import "fmt"26func main() {27	s1 := []int{1, 2, 3, 4, 5}28	s2 := []int{6, 7, 8, 9, 10}29	s3 := append(s1, s2...)30	fmt.Println(s1, s2, s3)31}

Append

Using AI Code Generation

1import (2func main() {3	str.WriteString("Hello")4	fmt.Println(str.String())5	str.WriteString(" world")6	fmt.Println(str.String())7	str.WriteString("!")8	fmt.Println(str.String())9}10import (11func main() {12	str.WriteString("Hello")13	fmt.Println(str.String())14	str.WriteString(" world")15	fmt.Println(str.String())16	str.WriteString("!")17	fmt.Println(str.String())18	str.Reset()19	fmt.Println(str.String())20}21import (22func main() {23	str.WriteString("Hello")24	fmt.Println(str.String())25	str.WriteString(" world")26	fmt.Println(str.String())27	str.WriteString("!")28	fmt.Println(str.String())29	str.Reset()30	fmt.Println(str.String())31	str.WriteString("Hello")32	fmt.Println(str.String())33}34import (35func main() {36	str.WriteString("Hello")37	fmt.Println(str.String())38	str.WriteString(" world")39	fmt.Println(str.String())40	str.WriteString("!")41	fmt.Println(str.String())42	str.Reset()43	fmt.Println(str.String())44	str.WriteString("Hello")45	fmt.Println(str.String())46	str.WriteString(" world")47	fmt.Println(str.String())48}49import (50func main() {51	str.WriteString("Hello")52	fmt.Println(str.String())53	str.WriteString(" world")54	fmt.Println(str.String())55	str.WriteString("!")56	fmt.Println(str.String())57	str.Reset()58	fmt.Println(str.String())59	str.WriteString("Hello")60	fmt.Println(str.String())61	str.WriteString(" world")62	fmt.Println(str.String())63	str.WriteString("!")64	fmt.Println(str.String())65}66import (67func main() {68	str.WriteString("Hello")69	fmt.Println(str.String())70	str.WriteString(" world")71	fmt.Println(str.String())72	str.WriteString("!")73	fmt.Println(str.String())74	str.Reset()75	fmt.Println(str.String())76	str.WriteString("Hello")77	fmt.Println(str.String

Append

Using AI Code Generation

1func main() {2    fmt.Println("Hello World")3    fmt.Println("Hello World")4    fmt.Println("Hello World")5    fmt.Println("Hello World")6    fmt.Println("Hello World")7}8func main() {9    fmt.Println("Hello World")10    fmt.Println("Hello World")11    fmt.Println("Hello World")12    fmt.Println("Hello World")13    fmt.Println("Hello World")14}15func main() {16    fmt.Println("Hello World")17    fmt.Println("Hello World")18    fmt.Println("Hello World")19    fmt.Println("Hello World")20    fmt.Println("Hello World")21}22func main() {23    fmt.Println("Hello World")24    fmt.Println("Hello World")25    fmt.Println("Hello World")26    fmt.Println("Hello World")27    fmt.Println("Hello World")28}29func main() {30    fmt.Println("Hello World")31    fmt.Println("Hello World")32    fmt.Println("Hello World")33    fmt.Println("Hello World")34    fmt.Println("Hello World")35}36func main() {37    fmt.Println("Hello World")38    fmt.Println("Hello World")39    fmt.Println("Hello World")40    fmt.Println("Hello World")41    fmt.Println("Hello World")42}43func main() {44    fmt.Println("Hello World")45    fmt.Println("Hello World")46    fmt.Println("Hello World")47    fmt.Println("Hello World")48    fmt.Println("Hello World")49}50func main() {51    fmt.Println("Hello World")52    fmt.Println("Hello World")53    fmt.Println("Hello World")54    fmt.Println("Hello World")55    fmt.Println("Hello World")56}57func main() {58    fmt.Println("Hello World")59    fmt.Println("Hello World")60    fmt.Println("Hello World")61    fmt.Println("Hello World")62    fmt.Println("Hello World")63}

Append

Using AI Code Generation

1import (2func main() {3	prog := new(Prog)4	prog.Append("Hello")5	prog.Append("World")6	fmt.Println(prog.String())7}8import (9type Prog struct {10}11func (p *Prog) Append(s string) {12	p.strings = append(p.strings, s)13}14func (p *Prog) String() string {15	return strings.Join(p.strings, " ")16}

Append

Using AI Code Generation

1import (2func main() {3	p1 := prog{1, 2, 3, 4, 5}4	fmt.Println("Before Append:", p1)5	p1.Append(6)6	fmt.Println("After Append:", p1)7}8Before Append: {1 2 3 4 5}9After Append: {1 2 3 4 5 6}10import (11func main() {12	p1 := prog{1, 2, 3, 4, 5}13	fmt.Println("Before Append:", p1)14	p1.Append(6, 7, 8, 9, 10)15	fmt.Println("After Append:", p1)16}17Before Append: {1 2 3 4 5}18After Append: {1 2 3 4 5 6 7 8 9 10}19import (20func main() {21	p1 := prog{1, 2, 3, 4, 5}22	fmt.Println("Before Append:", p1)23	p1.Append(6, 7, 8, 9, 10, 11, 12, 13, 14, 15)24	fmt.Println("After Append:", p1)25}26Before Append: {1 2 3 4 5}27After Append: {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15}28import (29func main() {30	p1 := prog{1, 2, 3, 4, 5}31	fmt.Println("Before Append:", p1)

Append

Using AI Code Generation

1import "fmt"2func main() {3  var s = prog{[]string{"C", "C++", "Java", "Python"}, "C"}4  s.Append("Golang")5  fmt.Println(s)6}7import "fmt"8func main() {9  var s = prog{[]string{"C", "C++", "Java", "Python"}, "C"}10  s.Add("Golang")11  fmt.Println(s)12}13import "fmt"14func main() {15  var s = prog{[]string{"C", "C++", "Java", "Python"}, "C"}16  s.Delete("C++")17  fmt.Println(s)18}19import "fmt"20func main() {21  var s = prog{[]string{"C", "C++", "Java", "Python"}, "C"}22  s.Update("C++", "Golang")23  fmt.Println(s)24}25import "fmt"26func main() {27  var s = prog{[]string{"C", "C++", "Java", "Python"}, "C"}28  s.Replace("C++", "Golang")29  fmt.Println(s)30}31import "fmt"32func main() {33  var s = prog{[]string{"C", "C++", "Java", "Python"}, "C"}34  fmt.Println(s.Find("C++"))35}36import "fmt"37func main() {38  var s = prog{[]string{"C", "C++", "Java", "

Append

Using AI Code Generation

1import (2func main() {3    fmt.Println(prog.Append("Hello ", "World"))4}5import (6func main() {7    fmt.Println(prog.Append("Hello ", "World"))8}9import (10func main() {11    fmt.Println(prog.Append("Hello ", "World"))12}13import (14func main() {15    fmt.Println(prog.Append("Hello ", "World"))16}17import (18func main() {19    fmt.Println(prog.Append("Hello ", "World"))20}21import (22func main() {23    fmt.Println(prog.Append("Hello ", "World"))24}25import (26func main() {27    fmt.Println(prog.Append("Hello ", "World"))28}29import (30func main() {31    fmt.Println(prog.Append("Hello ", "World"))32}33import (

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.