How to use Get method of result Package

Best Testkube code snippet using result.Get

aggregation_test.go

Source:aggregation_test.go Github

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...39 return rows40}41func (s *testAggFuncSuit) SetUpSuite(c *C) {42 s.ctx = mock.NewContext()43 s.ctx.GetSessionVars().GlobalVarsAccessor = variable.NewMockGlobalAccessor()44 s.rows = generateRowData()45 s.nullRow = chunk.MutRowFromDatums([]types.Datum{{}}).ToRow()46}47func (s *testAggFuncSuit) TestAvg(c *C) {48 col := &expression.Column{49 Index: 0,50 RetType: types.NewFieldType(mysql.TypeLonglong),51 }52 ctx := mock.NewContext()53 avgFunc := NewAggFuncDesc(s.ctx, ast.AggFuncAvg, []expression.Expression{col}, false).GetAggFunc(ctx)54 evalCtx := avgFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)55 result := avgFunc.GetResult(evalCtx)56 c.Assert(result.IsNull(), IsTrue)57 for _, row := range s.rows {58 err := avgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)59 c.Assert(err, IsNil)60 }61 result = avgFunc.GetResult(evalCtx)62 needed := types.NewDecFromStringForTest("67.000000000000000000000000000000")63 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)64 err := avgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)65 c.Assert(err, IsNil)66 result = avgFunc.GetResult(evalCtx)67 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)68 distinctAvgFunc := NewAggFuncDesc(s.ctx, ast.AggFuncAvg, []expression.Expression{col}, true).GetAggFunc(ctx)69 evalCtx = distinctAvgFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)70 for _, row := range s.rows {71 err := distinctAvgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)72 c.Assert(err, IsNil)73 }74 result = distinctAvgFunc.GetResult(evalCtx)75 needed = types.NewDecFromStringForTest("50.500000000000000000000000000000")76 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)77 partialResult := distinctAvgFunc.GetPartialResult(evalCtx)78 c.Assert(partialResult[0].GetInt64(), Equals, int64(100))79 needed = types.NewDecFromStringForTest("5050")80 c.Assert(partialResult[1].GetMysqlDecimal().Compare(needed) == 0, IsTrue, Commentf("%v, %v ", result.GetMysqlDecimal(), needed))81}82func (s *testAggFuncSuit) TestAvgFinalMode(c *C) {83 rows := make([][]types.Datum, 0, 100)84 for i := 1; i <= 100; i++ {85 rows = append(rows, types.MakeDatums(i, types.NewDecFromInt(int64(i*i))))86 }87 ctx := mock.NewContext()88 cntCol := &expression.Column{89 Index: 0,90 RetType: types.NewFieldType(mysql.TypeLonglong),91 }92 sumCol := &expression.Column{93 Index: 1,94 RetType: types.NewFieldType(mysql.TypeNewDecimal),95 }96 aggFunc := NewAggFuncDesc(s.ctx, ast.AggFuncAvg, []expression.Expression{cntCol, sumCol}, false)97 aggFunc.Mode = FinalMode98 avgFunc := aggFunc.GetAggFunc(ctx)99 evalCtx := avgFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)100 for _, row := range rows {101 err := avgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, chunk.MutRowFromDatums(row).ToRow())102 c.Assert(err, IsNil)103 }104 result := avgFunc.GetResult(evalCtx)105 needed := types.NewDecFromStringForTest("67.000000000000000000000000000000")106 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)107}108func (s *testAggFuncSuit) TestSum(c *C) {109 col := &expression.Column{110 Index: 0,111 RetType: types.NewFieldType(mysql.TypeLonglong),112 }113 ctx := mock.NewContext()114 sumFunc := NewAggFuncDesc(s.ctx, ast.AggFuncSum, []expression.Expression{col}, false).GetAggFunc(ctx)115 evalCtx := sumFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)116 result := sumFunc.GetResult(evalCtx)117 c.Assert(result.IsNull(), IsTrue)118 for _, row := range s.rows {119 err := sumFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)120 c.Assert(err, IsNil)121 }122 result = sumFunc.GetResult(evalCtx)123 needed := types.NewDecFromStringForTest("338350")124 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)125 err := sumFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)126 c.Assert(err, IsNil)127 result = sumFunc.GetResult(evalCtx)128 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)129 partialResult := sumFunc.GetPartialResult(evalCtx)130 c.Assert(partialResult[0].GetMysqlDecimal().Compare(needed) == 0, IsTrue)131 distinctSumFunc := NewAggFuncDesc(s.ctx, ast.AggFuncSum, []expression.Expression{col}, true).GetAggFunc(ctx)132 evalCtx = distinctSumFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)133 for _, row := range s.rows {134 err := distinctSumFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)135 c.Assert(err, IsNil)136 }137 result = distinctSumFunc.GetResult(evalCtx)138 needed = types.NewDecFromStringForTest("5050")139 c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)140}141func (s *testAggFuncSuit) TestBitAnd(c *C) {142 col := &expression.Column{143 Index: 0,144 RetType: types.NewFieldType(mysql.TypeLonglong),145 }146 ctx := mock.NewContext()147 bitAndFunc := NewAggFuncDesc(s.ctx, ast.AggFuncBitAnd, []expression.Expression{col}, false).GetAggFunc(ctx)148 evalCtx := bitAndFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)149 result := bitAndFunc.GetResult(evalCtx)150 c.Assert(result.GetUint64(), Equals, uint64(math.MaxUint64))151 row := chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()152 err := bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)153 c.Assert(err, IsNil)154 result = bitAndFunc.GetResult(evalCtx)155 c.Assert(result.GetUint64(), Equals, uint64(1))156 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)157 c.Assert(err, IsNil)158 result = bitAndFunc.GetResult(evalCtx)159 c.Assert(result.GetUint64(), Equals, uint64(1))160 row = chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()161 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)162 c.Assert(err, IsNil)163 result = bitAndFunc.GetResult(evalCtx)164 c.Assert(result.GetUint64(), Equals, uint64(1))165 row = chunk.MutRowFromDatums(types.MakeDatums(3)).ToRow()166 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)167 c.Assert(err, IsNil)168 result = bitAndFunc.GetResult(evalCtx)169 c.Assert(result.GetUint64(), Equals, uint64(1))170 row = chunk.MutRowFromDatums(types.MakeDatums(2)).ToRow()171 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)172 c.Assert(err, IsNil)173 result = bitAndFunc.GetResult(evalCtx)174 c.Assert(result.GetUint64(), Equals, uint64(0))175 partialResult := bitAndFunc.GetPartialResult(evalCtx)176 c.Assert(partialResult[0].GetUint64(), Equals, uint64(0))177 // test bit_and( decimal )178 col.RetType = types.NewFieldType(mysql.TypeNewDecimal)179 bitAndFunc.ResetContext(s.ctx.GetSessionVars().StmtCtx, evalCtx)180 result = bitAndFunc.GetResult(evalCtx)181 c.Assert(result.GetUint64(), Equals, uint64(math.MaxUint64))182 var dec types.MyDecimal183 err = dec.FromString([]byte("1.234"))184 c.Assert(err, IsNil)185 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()186 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)187 c.Assert(err, IsNil)188 result = bitAndFunc.GetResult(evalCtx)189 c.Assert(result.GetUint64(), Equals, uint64(1))190 err = dec.FromString([]byte("3.012"))191 c.Assert(err, IsNil)192 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()193 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)194 c.Assert(err, IsNil)195 result = bitAndFunc.GetResult(evalCtx)196 c.Assert(result.GetUint64(), Equals, uint64(1))197 err = dec.FromString([]byte("2.12345678"))198 c.Assert(err, IsNil)199 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()200 err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)201 c.Assert(err, IsNil)202 result = bitAndFunc.GetResult(evalCtx)203 c.Assert(result.GetUint64(), Equals, uint64(0))204}205func (s *testAggFuncSuit) TestBitOr(c *C) {206 col := &expression.Column{207 Index: 0,208 RetType: types.NewFieldType(mysql.TypeLonglong),209 }210 ctx := mock.NewContext()211 bitOrFunc := NewAggFuncDesc(s.ctx, ast.AggFuncBitOr, []expression.Expression{col}, false).GetAggFunc(ctx)212 evalCtx := bitOrFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)213 result := bitOrFunc.GetResult(evalCtx)214 c.Assert(result.GetUint64(), Equals, uint64(0))215 row := chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()216 err := bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)217 c.Assert(err, IsNil)218 result = bitOrFunc.GetResult(evalCtx)219 c.Assert(result.GetUint64(), Equals, uint64(1))220 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)221 c.Assert(err, IsNil)222 result = bitOrFunc.GetResult(evalCtx)223 c.Assert(result.GetUint64(), Equals, uint64(1))224 row = chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()225 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)226 c.Assert(err, IsNil)227 result = bitOrFunc.GetResult(evalCtx)228 c.Assert(result.GetUint64(), Equals, uint64(1))229 row = chunk.MutRowFromDatums(types.MakeDatums(3)).ToRow()230 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)231 c.Assert(err, IsNil)232 result = bitOrFunc.GetResult(evalCtx)233 c.Assert(result.GetUint64(), Equals, uint64(3))234 row = chunk.MutRowFromDatums(types.MakeDatums(2)).ToRow()235 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)236 c.Assert(err, IsNil)237 result = bitOrFunc.GetResult(evalCtx)238 c.Assert(result.GetUint64(), Equals, uint64(3))239 partialResult := bitOrFunc.GetPartialResult(evalCtx)240 c.Assert(partialResult[0].GetUint64(), Equals, uint64(3))241 // test bit_or( decimal )242 col.RetType = types.NewFieldType(mysql.TypeNewDecimal)243 bitOrFunc.ResetContext(s.ctx.GetSessionVars().StmtCtx, evalCtx)244 result = bitOrFunc.GetResult(evalCtx)245 c.Assert(result.GetUint64(), Equals, uint64(0))246 var dec types.MyDecimal247 err = dec.FromString([]byte("12.234"))248 c.Assert(err, IsNil)249 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()250 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)251 c.Assert(err, IsNil)252 result = bitOrFunc.GetResult(evalCtx)253 c.Assert(result.GetUint64(), Equals, uint64(12))254 err = dec.FromString([]byte("1.012"))255 c.Assert(err, IsNil)256 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()257 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)258 c.Assert(err, IsNil)259 result = bitOrFunc.GetResult(evalCtx)260 c.Assert(result.GetUint64(), Equals, uint64(13))261 err = dec.FromString([]byte("15.12345678"))262 c.Assert(err, IsNil)263 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()264 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)265 c.Assert(err, IsNil)266 result = bitOrFunc.GetResult(evalCtx)267 c.Assert(result.GetUint64(), Equals, uint64(15))268 err = dec.FromString([]byte("16.00"))269 c.Assert(err, IsNil)270 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()271 err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)272 c.Assert(err, IsNil)273 result = bitOrFunc.GetResult(evalCtx)274 c.Assert(result.GetUint64(), Equals, uint64(31))275}276func (s *testAggFuncSuit) TestBitXor(c *C) {277 col := &expression.Column{278 Index: 0,279 RetType: types.NewFieldType(mysql.TypeLonglong),280 }281 ctx := mock.NewContext()282 bitXorFunc := NewAggFuncDesc(s.ctx, ast.AggFuncBitXor, []expression.Expression{col}, false).GetAggFunc(ctx)283 evalCtx := bitXorFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)284 result := bitXorFunc.GetResult(evalCtx)285 c.Assert(result.GetUint64(), Equals, uint64(0))286 row := chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()287 err := bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)288 c.Assert(err, IsNil)289 result = bitXorFunc.GetResult(evalCtx)290 c.Assert(result.GetUint64(), Equals, uint64(1))291 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)292 c.Assert(err, IsNil)293 result = bitXorFunc.GetResult(evalCtx)294 c.Assert(result.GetUint64(), Equals, uint64(1))295 row = chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()296 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)297 c.Assert(err, IsNil)298 result = bitXorFunc.GetResult(evalCtx)299 c.Assert(result.GetUint64(), Equals, uint64(0))300 row = chunk.MutRowFromDatums(types.MakeDatums(3)).ToRow()301 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)302 c.Assert(err, IsNil)303 result = bitXorFunc.GetResult(evalCtx)304 c.Assert(result.GetUint64(), Equals, uint64(3))305 row = chunk.MutRowFromDatums(types.MakeDatums(2)).ToRow()306 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)307 c.Assert(err, IsNil)308 result = bitXorFunc.GetResult(evalCtx)309 c.Assert(result.GetUint64(), Equals, uint64(1))310 partialResult := bitXorFunc.GetPartialResult(evalCtx)311 c.Assert(partialResult[0].GetUint64(), Equals, uint64(1))312 // test bit_xor( decimal )313 col.RetType = types.NewFieldType(mysql.TypeNewDecimal)314 bitXorFunc.ResetContext(s.ctx.GetSessionVars().StmtCtx, evalCtx)315 result = bitXorFunc.GetResult(evalCtx)316 c.Assert(result.GetUint64(), Equals, uint64(0))317 var dec types.MyDecimal318 err = dec.FromString([]byte("1.234"))319 c.Assert(err, IsNil)320 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()321 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)322 c.Assert(err, IsNil)323 result = bitXorFunc.GetResult(evalCtx)324 c.Assert(result.GetUint64(), Equals, uint64(1))325 err = dec.FromString([]byte("1.012"))326 c.Assert(err, IsNil)327 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()328 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)329 c.Assert(err, IsNil)330 result = bitXorFunc.GetResult(evalCtx)331 c.Assert(result.GetUint64(), Equals, uint64(0))332 err = dec.FromString([]byte("2.12345678"))333 c.Assert(err, IsNil)334 row = chunk.MutRowFromDatums(types.MakeDatums(&dec)).ToRow()335 err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)336 c.Assert(err, IsNil)337 result = bitXorFunc.GetResult(evalCtx)338 c.Assert(result.GetUint64(), Equals, uint64(2))339}340func (s *testAggFuncSuit) TestCount(c *C) {341 col := &expression.Column{342 Index: 0,343 RetType: types.NewFieldType(mysql.TypeLonglong),344 }345 ctx := mock.NewContext()346 countFunc := NewAggFuncDesc(s.ctx, ast.AggFuncCount, []expression.Expression{col}, false).GetAggFunc(ctx)347 evalCtx := countFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)348 result := countFunc.GetResult(evalCtx)349 c.Assert(result.GetInt64(), Equals, int64(0))350 for _, row := range s.rows {351 err := countFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)352 c.Assert(err, IsNil)353 }354 result = countFunc.GetResult(evalCtx)355 c.Assert(result.GetInt64(), Equals, int64(5050))356 err := countFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)357 c.Assert(err, IsNil)358 result = countFunc.GetResult(evalCtx)359 c.Assert(result.GetInt64(), Equals, int64(5050))360 partialResult := countFunc.GetPartialResult(evalCtx)361 c.Assert(partialResult[0].GetInt64(), Equals, int64(5050))362 distinctCountFunc := NewAggFuncDesc(s.ctx, ast.AggFuncCount, []expression.Expression{col}, true).GetAggFunc(ctx)363 evalCtx = distinctCountFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)364 for _, row := range s.rows {365 err := distinctCountFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)366 c.Assert(err, IsNil)367 }368 result = distinctCountFunc.GetResult(evalCtx)369 c.Assert(result.GetInt64(), Equals, int64(100))370}371func (s *testAggFuncSuit) TestConcat(c *C) {372 col := &expression.Column{373 Index: 0,374 RetType: types.NewFieldType(mysql.TypeLonglong),375 }376 sep := &expression.Column{377 Index: 1,378 RetType: types.NewFieldType(mysql.TypeVarchar),379 }380 ctx := mock.NewContext()381 concatFunc := NewAggFuncDesc(s.ctx, ast.AggFuncGroupConcat, []expression.Expression{col, sep}, false).GetAggFunc(ctx)382 evalCtx := concatFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)383 result := concatFunc.GetResult(evalCtx)384 c.Assert(result.IsNull(), IsTrue)385 row := chunk.MutRowFromDatums(types.MakeDatums(1, "x"))386 err := concatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())387 c.Assert(err, IsNil)388 result = concatFunc.GetResult(evalCtx)389 c.Assert(result.GetString(), Equals, "1")390 row.SetDatum(0, types.NewIntDatum(2))391 err = concatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())392 c.Assert(err, IsNil)393 result = concatFunc.GetResult(evalCtx)394 c.Assert(result.GetString(), Equals, "1x2")395 row.SetDatum(0, types.NewDatum(nil))396 err = concatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())397 c.Assert(err, IsNil)398 result = concatFunc.GetResult(evalCtx)399 c.Assert(result.GetString(), Equals, "1x2")400 partialResult := concatFunc.GetPartialResult(evalCtx)401 c.Assert(partialResult[0].GetString(), Equals, "1x2")402 distinctConcatFunc := NewAggFuncDesc(s.ctx, ast.AggFuncGroupConcat, []expression.Expression{col, sep}, true).GetAggFunc(ctx)403 evalCtx = distinctConcatFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)404 row.SetDatum(0, types.NewIntDatum(1))405 err = distinctConcatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())406 c.Assert(err, IsNil)407 result = distinctConcatFunc.GetResult(evalCtx)408 c.Assert(result.GetString(), Equals, "1")409 row.SetDatum(0, types.NewIntDatum(1))410 err = distinctConcatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())411 c.Assert(err, IsNil)412 result = distinctConcatFunc.GetResult(evalCtx)413 c.Assert(result.GetString(), Equals, "1")414}415func (s *testAggFuncSuit) TestFirstRow(c *C) {416 col := &expression.Column{417 Index: 0,418 RetType: types.NewFieldType(mysql.TypeLonglong),419 }420 ctx := mock.NewContext()421 firstRowFunc := NewAggFuncDesc(s.ctx, ast.AggFuncFirstRow, []expression.Expression{col}, false).GetAggFunc(ctx)422 evalCtx := firstRowFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)423 row := chunk.MutRowFromDatums(types.MakeDatums(1)).ToRow()424 err := firstRowFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)425 c.Assert(err, IsNil)426 result := firstRowFunc.GetResult(evalCtx)427 c.Assert(result.GetUint64(), Equals, uint64(1))428 row = chunk.MutRowFromDatums(types.MakeDatums(2)).ToRow()429 err = firstRowFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)430 c.Assert(err, IsNil)431 result = firstRowFunc.GetResult(evalCtx)432 c.Assert(result.GetUint64(), Equals, uint64(1))433 partialResult := firstRowFunc.GetPartialResult(evalCtx)434 c.Assert(partialResult[0].GetUint64(), Equals, uint64(1))435}436func (s *testAggFuncSuit) TestMaxMin(c *C) {437 col := &expression.Column{438 Index: 0,439 RetType: types.NewFieldType(mysql.TypeLonglong),440 }441 ctx := mock.NewContext()442 maxFunc := NewAggFuncDesc(s.ctx, ast.AggFuncMax, []expression.Expression{col}, false).GetAggFunc(ctx)443 minFunc := NewAggFuncDesc(s.ctx, ast.AggFuncMin, []expression.Expression{col}, false).GetAggFunc(ctx)444 maxEvalCtx := maxFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)445 minEvalCtx := minFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)446 result := maxFunc.GetResult(maxEvalCtx)447 c.Assert(result.IsNull(), IsTrue)448 result = minFunc.GetResult(minEvalCtx)449 c.Assert(result.IsNull(), IsTrue)450 row := chunk.MutRowFromDatums(types.MakeDatums(2))451 err := maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())452 c.Assert(err, IsNil)453 result = maxFunc.GetResult(maxEvalCtx)454 c.Assert(result.GetInt64(), Equals, int64(2))455 err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())456 c.Assert(err, IsNil)457 result = minFunc.GetResult(minEvalCtx)458 c.Assert(result.GetInt64(), Equals, int64(2))459 row.SetDatum(0, types.NewIntDatum(3))460 err = maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())461 c.Assert(err, IsNil)462 result = maxFunc.GetResult(maxEvalCtx)463 c.Assert(result.GetInt64(), Equals, int64(3))464 err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())465 c.Assert(err, IsNil)466 result = minFunc.GetResult(minEvalCtx)467 c.Assert(result.GetInt64(), Equals, int64(2))468 row.SetDatum(0, types.NewIntDatum(1))469 err = maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())470 c.Assert(err, IsNil)471 result = maxFunc.GetResult(maxEvalCtx)472 c.Assert(result.GetInt64(), Equals, int64(3))473 err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())474 c.Assert(err, IsNil)475 result = minFunc.GetResult(minEvalCtx)476 c.Assert(result.GetInt64(), Equals, int64(1))477 row.SetDatum(0, types.NewDatum(nil))478 err = maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())479 c.Assert(err, IsNil)480 result = maxFunc.GetResult(maxEvalCtx)481 c.Assert(result.GetInt64(), Equals, int64(3))482 err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, row.ToRow())483 c.Assert(err, IsNil)484 result = minFunc.GetResult(minEvalCtx)485 c.Assert(result.GetInt64(), Equals, int64(1))486 partialResult := minFunc.GetPartialResult(minEvalCtx)487 c.Assert(partialResult[0].GetInt64(), Equals, int64(1))488}...

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context_test.go

Source:context_test.go Github

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1// Copyright 2018 Frédéric Guillot. All rights reserved.2// Use of this source code is governed by the Apache 2.03// license that can be found in the LICENSE file.4package request // import "miniflux.app/http/request"5import (6 "context"7 "net/http"8 "testing"9)10func TestContextStringValue(t *testing.T) {11 r, _ := http.NewRequest("GET", "http://example.org", nil)12 ctx := r.Context()13 ctx = context.WithValue(ctx, ClientIPContextKey, "IP")14 r = r.WithContext(ctx)15 result := getContextStringValue(r, ClientIPContextKey)16 expected := "IP"17 if result != expected {18 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)19 }20}21func TestContextStringValueWithInvalidType(t *testing.T) {22 r, _ := http.NewRequest("GET", "http://example.org", nil)23 ctx := r.Context()24 ctx = context.WithValue(ctx, ClientIPContextKey, 0)25 r = r.WithContext(ctx)26 result := getContextStringValue(r, ClientIPContextKey)27 expected := ""28 if result != expected {29 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)30 }31}32func TestContextStringValueWhenUnset(t *testing.T) {33 r, _ := http.NewRequest("GET", "http://example.org", nil)34 result := getContextStringValue(r, ClientIPContextKey)35 expected := ""36 if result != expected {37 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)38 }39}40func TestContextBoolValue(t *testing.T) {41 r, _ := http.NewRequest("GET", "http://example.org", nil)42 ctx := r.Context()43 ctx = context.WithValue(ctx, IsAdminUserContextKey, true)44 r = r.WithContext(ctx)45 result := getContextBoolValue(r, IsAdminUserContextKey)46 expected := true47 if result != expected {48 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)49 }50}51func TestContextBoolValueWithInvalidType(t *testing.T) {52 r, _ := http.NewRequest("GET", "http://example.org", nil)53 ctx := r.Context()54 ctx = context.WithValue(ctx, IsAdminUserContextKey, "invalid")55 r = r.WithContext(ctx)56 result := getContextBoolValue(r, IsAdminUserContextKey)57 expected := false58 if result != expected {59 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)60 }61}62func TestContextBoolValueWhenUnset(t *testing.T) {63 r, _ := http.NewRequest("GET", "http://example.org", nil)64 result := getContextBoolValue(r, IsAdminUserContextKey)65 expected := false66 if result != expected {67 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)68 }69}70func TestContextInt64Value(t *testing.T) {71 r, _ := http.NewRequest("GET", "http://example.org", nil)72 ctx := r.Context()73 ctx = context.WithValue(ctx, UserIDContextKey, int64(1234))74 r = r.WithContext(ctx)75 result := getContextInt64Value(r, UserIDContextKey)76 expected := int64(1234)77 if result != expected {78 t.Errorf(`Unexpected context value, got %d instead of %d`, result, expected)79 }80}81func TestContextInt64ValueWithInvalidType(t *testing.T) {82 r, _ := http.NewRequest("GET", "http://example.org", nil)83 ctx := r.Context()84 ctx = context.WithValue(ctx, UserIDContextKey, "invalid")85 r = r.WithContext(ctx)86 result := getContextInt64Value(r, UserIDContextKey)87 expected := int64(0)88 if result != expected {89 t.Errorf(`Unexpected context value, got %d instead of %d`, result, expected)90 }91}92func TestContextInt64ValueWhenUnset(t *testing.T) {93 r, _ := http.NewRequest("GET", "http://example.org", nil)94 result := getContextInt64Value(r, UserIDContextKey)95 expected := int64(0)96 if result != expected {97 t.Errorf(`Unexpected context value, got %d instead of %d`, result, expected)98 }99}100func TestIsAdmin(t *testing.T) {101 r, _ := http.NewRequest("GET", "http://example.org", nil)102 result := IsAdminUser(r)103 expected := false104 if result != expected {105 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)106 }107 ctx := r.Context()108 ctx = context.WithValue(ctx, IsAdminUserContextKey, true)109 r = r.WithContext(ctx)110 result = IsAdminUser(r)111 expected = true112 if result != expected {113 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)114 }115}116func TestIsAuthenticated(t *testing.T) {117 r, _ := http.NewRequest("GET", "http://example.org", nil)118 result := IsAuthenticated(r)119 expected := false120 if result != expected {121 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)122 }123 ctx := r.Context()124 ctx = context.WithValue(ctx, IsAuthenticatedContextKey, true)125 r = r.WithContext(ctx)126 result = IsAuthenticated(r)127 expected = true128 if result != expected {129 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)130 }131}132func TestUserID(t *testing.T) {133 r, _ := http.NewRequest("GET", "http://example.org", nil)134 result := UserID(r)135 expected := int64(0)136 if result != expected {137 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)138 }139 ctx := r.Context()140 ctx = context.WithValue(ctx, UserIDContextKey, int64(123))141 r = r.WithContext(ctx)142 result = UserID(r)143 expected = int64(123)144 if result != expected {145 t.Errorf(`Unexpected context value, got %v instead of %v`, result, expected)146 }147}148func TestUserTimezone(t *testing.T) {149 r, _ := http.NewRequest("GET", "http://example.org", nil)150 result := UserTimezone(r)151 expected := "UTC"152 if result != expected {153 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)154 }155 ctx := r.Context()156 ctx = context.WithValue(ctx, UserTimezoneContextKey, "Europe/Paris")157 r = r.WithContext(ctx)158 result = UserTimezone(r)159 expected = "Europe/Paris"160 if result != expected {161 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)162 }163}164func TestUserLanguage(t *testing.T) {165 r, _ := http.NewRequest("GET", "http://example.org", nil)166 result := UserLanguage(r)167 expected := "en_US"168 if result != expected {169 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)170 }171 ctx := r.Context()172 ctx = context.WithValue(ctx, UserLanguageContextKey, "fr_FR")173 r = r.WithContext(ctx)174 result = UserLanguage(r)175 expected = "fr_FR"176 if result != expected {177 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)178 }179}180func TestUserTheme(t *testing.T) {181 r, _ := http.NewRequest("GET", "http://example.org", nil)182 result := UserTheme(r)183 expected := "system_serif"184 if result != expected {185 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)186 }187 ctx := r.Context()188 ctx = context.WithValue(ctx, UserThemeContextKey, "dark_serif")189 r = r.WithContext(ctx)190 result = UserTheme(r)191 expected = "dark_serif"192 if result != expected {193 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)194 }195}196func TestCSRF(t *testing.T) {197 r, _ := http.NewRequest("GET", "http://example.org", nil)198 result := CSRF(r)199 expected := ""200 if result != expected {201 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)202 }203 ctx := r.Context()204 ctx = context.WithValue(ctx, CSRFContextKey, "secret")205 r = r.WithContext(ctx)206 result = CSRF(r)207 expected = "secret"208 if result != expected {209 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)210 }211}212func TestSessionID(t *testing.T) {213 r, _ := http.NewRequest("GET", "http://example.org", nil)214 result := SessionID(r)215 expected := ""216 if result != expected {217 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)218 }219 ctx := r.Context()220 ctx = context.WithValue(ctx, SessionIDContextKey, "id")221 r = r.WithContext(ctx)222 result = SessionID(r)223 expected = "id"224 if result != expected {225 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)226 }227}228func TestUserSessionToken(t *testing.T) {229 r, _ := http.NewRequest("GET", "http://example.org", nil)230 result := UserSessionToken(r)231 expected := ""232 if result != expected {233 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)234 }235 ctx := r.Context()236 ctx = context.WithValue(ctx, UserSessionTokenContextKey, "token")237 r = r.WithContext(ctx)238 result = UserSessionToken(r)239 expected = "token"240 if result != expected {241 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)242 }243}244func TestOAuth2State(t *testing.T) {245 r, _ := http.NewRequest("GET", "http://example.org", nil)246 result := OAuth2State(r)247 expected := ""248 if result != expected {249 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)250 }251 ctx := r.Context()252 ctx = context.WithValue(ctx, OAuth2StateContextKey, "state")253 r = r.WithContext(ctx)254 result = OAuth2State(r)255 expected = "state"256 if result != expected {257 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)258 }259}260func TestFlashMessage(t *testing.T) {261 r, _ := http.NewRequest("GET", "http://example.org", nil)262 result := FlashMessage(r)263 expected := ""264 if result != expected {265 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)266 }267 ctx := r.Context()268 ctx = context.WithValue(ctx, FlashMessageContextKey, "message")269 r = r.WithContext(ctx)270 result = FlashMessage(r)271 expected = "message"272 if result != expected {273 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)274 }275}276func TestFlashErrorMessage(t *testing.T) {277 r, _ := http.NewRequest("GET", "http://example.org", nil)278 result := FlashErrorMessage(r)279 expected := ""280 if result != expected {281 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)282 }283 ctx := r.Context()284 ctx = context.WithValue(ctx, FlashErrorMessageContextKey, "error message")285 r = r.WithContext(ctx)286 result = FlashErrorMessage(r)287 expected = "error message"288 if result != expected {289 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)290 }291}292func TestPocketRequestToken(t *testing.T) {293 r, _ := http.NewRequest("GET", "http://example.org", nil)294 result := PocketRequestToken(r)295 expected := ""296 if result != expected {297 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)298 }299 ctx := r.Context()300 ctx = context.WithValue(ctx, PocketRequestTokenContextKey, "request token")301 r = r.WithContext(ctx)302 result = PocketRequestToken(r)303 expected = "request token"304 if result != expected {305 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)306 }307}308func TestClientIP(t *testing.T) {309 r, _ := http.NewRequest("GET", "http://example.org", nil)310 result := ClientIP(r)311 expected := ""312 if result != expected {313 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)314 }315 ctx := r.Context()316 ctx = context.WithValue(ctx, ClientIPContextKey, "127.0.0.1")317 r = r.WithContext(ctx)318 result = ClientIP(r)319 expected = "127.0.0.1"320 if result != expected {321 t.Errorf(`Unexpected context value, got %q instead of %q`, result, expected)322 }323}...

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position.go

Source:position.go Github

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...132 p := PositionFromFileRank(file, rank)133 return p, true134}135func (p Position) String() string {136 f := byte(p.GetFile())137 r := byte(p.GetRank())138 return string([]byte{f, r})139}140func (p Position) GetRank() Rank {141 rank := p/8 + 1142 return Rank(rank + '0')143}144func (p Position) GetFile() File {145 file := p % 8146 return File(file + 'a')147}148func (p Position) GetWhitePawnAttacks() []Position {149 positions := []Position{}150 file, rank := p.GetFile(), p.GetRank()151 if rank > '1' && rank < '8' {152 if file > 'a' {153 positions = append(positions, p+7)154 }155 if file < 'h' {156 positions = append(positions, p+9)157 }158 }159 return positions160}161func (p Position) GetBlackPawnAttacks() []Position {162 positions := []Position{}163 file, rank := p.GetFile(), p.GetRank()164 if rank > '1' && rank < '8' {165 if file > 'a' {166 positions = append(positions, p-9)167 }168 if file < 'h' {169 positions = append(positions, p-7)170 }171 }172 return positions173}174func (p Position) GetWhitePawnMoves() [][]Position {175 pieceMoves := p.GetPieceMoves(WhitePawn)176 result := [][]Position{}177 result = append(result, pieceMoves)178 return result179}180func (p Position) GetBlackPawnMoves() [][]Position {181 pieceMoves := p.GetPieceMoves(BlackPawn)182 result := [][]Position{}183 result = append(result, pieceMoves)184 return result185}186func (p Position) GetAdjacentFiles() []File {187 f := p.GetFile()188 result := []File{}189 if f != 'a' {190 result = append(result, File(byte(f)-1))191 }192 if f != 'h' {193 result = append(result, File(byte(f)+1))194 }195 return result196}197func (p Position) GetEnPassantCapture() Position {198 if p.GetRank() == '3' {199 return p + 8200 }201 return p - 8202}203func (p Position) GetPieceMoves(piece Piece) []Position {204 return PieceMoves[int(piece)*64+int(p)]205}206func (p Position) GetMoveVectors(piece Piece) [][]Position {207 return MoveVectors[int(piece)*64+int(p)]208}209func (p Position) GetAttackVectors(piece Piece) [][]Position {210 return AttackVectors[int(piece)*64+int(p)]211}212func (p Position) GetPawnAttacks(color Color) []Position {213 return PawnAttacksBitmap[int(color.Opposite())*64+int(p)].ToPositions()214}215func (p Position) GetKnightMoves() []Position {216 return p.GetPieceMoves(WhiteKnight)217}218func (p Position) GetLines() [][]Position {219 return p.GetMoveVectors(WhiteRook)220}221func (p Position) GetDiagonals() [][]Position {222 return p.GetMoveVectors(WhiteBishop)223}224func (p Position) GetKingMoves() []Position {225 return p.GetPieceMoves(WhiteKing)226}227func (p Position) GetQueenMoves() [][]Position {228 return p.GetMoveVectors(WhiteQueen)229}230func (p Position) IsPawnAttack(p2 Position, color Color) bool {231 return PawnAttacksBitmap[int(color.Opposite())*64+int(p)].IsSet(p2)232}233func (p Position) IsPawnOpeningJump(color Color) bool {234 if color == Black {235 return p.GetRank() == '5'236 }237 return p.GetRank() == '4'238}239func (p Position) CanPawnOpeningJump(color Color) bool {240 if color == Black {241 return p.GetRank() == '7'242 }243 return p.GetRank() == '2'244}245func (p Position) GetPawnOpeningJump(color Color) Position {246 if color == Black {247 return p - 16248 }249 return p + 16250}251func PositionFromFileRank(f File, r Rank) Position {252 rank := int(r - '1')253 file := int(f - 'a')254 return Position(rank*8 + file)255}256func init() {257 if false {258 formatPos := func(p Position) string {259 return strings.ToUpper(p.String())260 }261 formatMoves := func(moves []Position) string {262 result := []string{}263 for _, m := range moves {264 result = append(result, formatPos(m))265 }266 return "[]Position{" + strings.Join(result, ", ") + "}"267 }268 result := "package chess_engine\n\n"269 flatten := func(positions [][]Position) []Position {270 result := []Position{}271 for _, line := range positions {272 for _, pos := range line {273 result = append(result, pos)274 }275 }276 return result277 }278 expand := func(positions []Position) [][]Position {279 result := [][]Position{}280 for _, p := range positions {281 result = append(result, []Position{p})282 }283 return result284 }285 getPositions := func(p Piece, pos Position) []Position {286 if p.ToNormalizedPiece() == King {287 return pos.GetKingMoves()288 } else if p.ToNormalizedPiece() == Knight {289 return pos.GetKnightMoves()290 } else if p.ToNormalizedPiece() == Pawn {291 if p.Color() == White {292 return flatten(pos.GetWhitePawnMoves())293 } else {294 return flatten(pos.GetBlackPawnMoves())295 }296 } else if p.ToNormalizedPiece() == Rook {297 return flatten(pos.GetLines())298 } else if p.ToNormalizedPiece() == Bishop {299 return flatten(pos.GetDiagonals())300 } else if p.ToNormalizedPiece() == Queen {301 return flatten(pos.GetQueenMoves())302 }303 panic("adsa")304 }305 getLines := func(p Piece, pos Position) [][]Position {306 if p.ToNormalizedPiece() == King {307 return expand(pos.GetKingMoves())308 } else if p.ToNormalizedPiece() == Knight {309 return expand(pos.GetKnightMoves())310 } else if p.ToNormalizedPiece() == Pawn {311 if p.Color() == White {312 return pos.GetWhitePawnMoves()313 } else {314 return pos.GetBlackPawnMoves()315 }316 } else if p.ToNormalizedPiece() == Rook {317 return (pos.GetLines())318 } else if p.ToNormalizedPiece() == Bishop {319 return (pos.GetDiagonals())320 } else if p.ToNormalizedPiece() == Queen {321 return (pos.GetQueenMoves())322 }323 panic("adsa")324 }325 getAttacks := func(p Piece, pos Position) [][]Position {326 if p.ToNormalizedPiece() == King {327 return expand(pos.GetKingMoves())328 } else if p.ToNormalizedPiece() == Knight {329 return expand(pos.GetKnightMoves())330 } else if p.ToNormalizedPiece() == Pawn {331 if p.Color() == White {332 return expand(pos.GetWhitePawnAttacks())333 } else {334 return expand(pos.GetBlackPawnAttacks())335 }336 } else if p.ToNormalizedPiece() == Rook {337 return (pos.GetLines())338 } else if p.ToNormalizedPiece() == Bishop {339 return (pos.GetDiagonals())340 } else if p.ToNormalizedPiece() == Queen {341 return (pos.GetQueenMoves())342 }343 panic("adsa")344 }345 result += "var MoveVectors = [][][]Position{\n"346 for _, piece := range Pieces {347 result += "\t// " + piece.String() + "\n"348 for i := 0; i < 64; i++ {349 lines := getLines(piece, Position(i))350 if len(lines) == 0 || (len(lines) == 1 && len(lines[0]) == 0) {351 result += "\t[][]Position{},\n"352 continue353 }354 result += "\t[][]Position{\n"355 for _, moves := range lines {...

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1import "fmt"2type Result struct {3}4func (r *Result) Get() int {5}6func (r *Result) Set(result int) {7}8func main() {9 r.Set(10)10 fmt.Println(r.Get())11}12import "fmt"13type Result struct {14}15func (r *Result) Get() int {16}17func (r *Result) Set(result int) {18}19func main() {20 r.Set(10)21 fmt.Println(r.Get())22}23import "fmt"24type Result struct {25}26func (r *Result) Get() int {27}28func (r *Result) Set(result int) {29}30func main() {31 r.Set(10)32 fmt.Println(r.Get())33}34import "fmt"35type Result struct {36}37func (r *Result) Get() int {38}39func (r *Result) Set(result int) {40}41func main() {42 r.Set(10)43 fmt.Println(r.Get())44}45import "fmt"46type Result struct {47}48func (r *Result) Get() int {49}50func (r *Result) Set(result int) {51}52func main() {53 r.Set(10)54 fmt.Println(r.Get())55}56import "fmt"57type Result struct {58}59func (r *Result) Get() int {60}61func (r *Result) Set(result int) {62}63func main() {64 r.Set(

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1import (2type result struct {3}4func (r result) Get() (int, int) {5}6func main() {7r := result{a: 10, b: 20}8a, b := r.Get()9fmt.Println("a=", a, "b=", b)10}11import (12type result struct {13}14func (r result) Get() (int, int) {15}16func (r *result) Set(a, b int) {17}18func main() {19r := result{a: 10, b: 20}20a, b := r.Get()21fmt.Println("a=", a, "b=", b)22r.Set(100, 200)23a, b = r.Get()24fmt.Println("a=", a, "b=", b)25}26import (27type result struct {28}29func (r result) Get() (int, int) {30}31func (r *result) Set(a, b int) {32}33func main() {34r := result{a: 10, b: 20}35a, b := r.Get()36fmt.Println("a=", a, "b=", b)37r.Set(100, 200)38a, b = r.Get()39fmt.Println("a=", a, "b=", b)40r2.Set(1000, 2000)41a, b = r.Get()42fmt.Println("a=", a, "b=", b)43}

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1import (2type Result struct {3}4func (r *Result) Get() string {5}6func main() {7 r := new(Result)8 fmt.Println(r.Get())9}

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