id stringlengths 11 41 | messages listlengths 3 3 | metadata unknown | source unknown | split stringclasses 1
value | split_origin stringclasses 4
values | task_type stringclasses 7
values |
|---|---|---|---|---|---|---|
synth_refactor_842_0105 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport '../../gallery/demo.dart';\nenum BannerDemoAction { reset, showMultipleActions, ... | {
"accepted_by": "synthetic_generation",
"code_len": 3198,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_801_1000_eng.csv",
"original_row": "42",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1454_0106 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:async';\nimport 'package:ui/ui.dart' as ui;\ntypedef TimestampFunction = DateTime Function();\nclass AlarmClock {\n... | {
"accepted_by": "synthetic_generation",
"code_len": 1500,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from"... | {
"derived_from": "flutter_code_with_questions_1401_1600_eng.csv",
"original_row": "54",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3701_0107 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:io';\nimport 'package:flutter/foundation.dart';\nimport 'binding.dart';\nimport 'hardware_keyboard.dart';... | {
"accepted_by": "synthetic_generation",
"code_len": 24368,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_3601_3800_eng.csv",
"original_row": "101",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2637_0108 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/cupertino.dart';\nimport 'package:flutter_api_samples/cupertino/form_row/cupertino_form_row.0.dart' as e... | {
"accepted_by": "synthetic_generation",
"code_len": 903,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cupertin... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "37",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4244_0109 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/painting.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('FractionalOffs... | {
"accepted_by": "synthetic_generation",
"code_len": 2126,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "44",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_682_0110 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/framework.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 329,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_601_800_eng.csv",
"original_row": "82",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_833_0111 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/cupertino.dart';\nimport 'package:intl/intl.dart';\nimport '../../gallery/demo.dart';\nimport 'cupertino... | {
"accepted_by": "synthetic_generation",
"code_len": 8380,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cuperti... | {
"derived_from": "flutter_code_with_questions_801_1000_eng.csv",
"original_row": "33",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1025_0112 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/scheduler.dart';\nimport 'animation.dart';\nimport 'overlay.dar... | {
"accepted_by": "synthetic_generation",
"code_len": 9497,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "25",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_982_0113 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/cupertino.dart';\nimport '../../gallery_localizations.dart';\nclass CupertinoSwitchDemo extends Stateful... | {
"accepted_by": "synthetic_generation",
"code_len": 2442,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cuperti... | {
"derived_from": "flutter_code_with_questions_801_1000_eng.csv",
"original_row": "182",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3133_0114 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/widgets/sliver_fill/sliver_fill_remaining.0.dart' a... | {
"accepted_by": "synthetic_generation",
"code_len": 1909,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "133",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2131_0115 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() {\n runApp(const ActionIconThemeExampleApp());\n}\nclass _CustomEndDrawerI... | {
"accepted_by": "synthetic_generation",
"code_len": 2697,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2001_2200_eng.csv",
"original_row": "131",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_246_0116 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/rendering.dart';\nimport 'package:flutter_test/flutter_test.dar... | {
"accepted_by": "synthetic_generation",
"code_len": 1808,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_201_400_eng.csv",
"original_row": "46",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4089_0117 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n testWidgets('Materia... | {
"accepted_by": "synthetic_generation",
"code_len": 8626,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_4001_4200_eng.csv",
"original_row": "89",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3763_0118 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:math' as math;\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/gestures.dart';\nimpor... | {
"accepted_by": "synthetic_generation",
"code_len": 24296,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_3601_3800_eng.csv",
"original_row": "163",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3644_0119 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:math' as math;\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/gestures.dart';\nimpor... | {
"accepted_by": "synthetic_generation",
"code_len": 35088,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_3601_3800_eng.csv",
"original_row": "44",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3987_0120 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('clampDouble'... | {
"accepted_by": "synthetic_generation",
"code_len": 461,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_3801_4000_eng.csv",
"original_row": "187",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2581_0121 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const SliverConstrainedCrossAxisExampleApp());\nclass SliverConst... | {
"accepted_by": "synthetic_generation",
"code_len": 1221,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2401_2600_eng.csv",
"original_row": "181",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_487_0122 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/framework.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 1463,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_401_600_eng.csv",
"original_row": "87",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2615_0123 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const SizeTransitionExampleApp());\nclass SizeTransitionExampleAp... | {
"accepted_by": "synthetic_generation",
"code_len": 1238,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "15",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3809_0124 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'package:flutter/rendering.dart';\nimport 'framework.dart';\nclass PerformanceOverlay extends LeafRenderObjectW... | {
"accepted_by": "synthetic_generation",
"code_len": 876,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_3801_4000_eng.csv",
"original_row": "9",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4274_0125 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\n@Tags(<String>['reduced-test-set'])\nlibrary;\nimport 'package:flutter/material.dart';\nimport 'package:flutter_test/flutter_tes... | {
"accepted_by": "synthetic_generation",
"code_len": 14045,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materi... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "74",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1247_0127 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:convert';\nimport 'dart:io';\nimport 'package:process/process.dart';\nclass FakeProcessManager extends LocalProcess... | {
"accepted_by": "synthetic_generation",
"code_len": 684,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from":... | {
"derived_from": "flutter_code_with_questions_1201_1400_eng.csv",
"original_row": "47",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1012_0128 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport '../../gallery_localizations.dart';\nconst double kColorItemHeight = 48;\nclass ... | {
"accepted_by": "synthetic_generation",
"code_len": 5870,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "12",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2136_0129 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const AppBarApp());\nclass AppBarApp extends StatelessWidget {\n ... | {
"accepted_by": "synthetic_generation",
"code_len": 1615,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2001_2200_eng.csv",
"original_row": "136",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1770_0130 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:async';\nimport 'dart:js_interop';\nimport 'dart:js_util' as js_util;\nimport 'dart:typed_data';\nimport 'package:t... | {
"accepted_by": "synthetic_generation",
"code_len": 20734,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from... | {
"derived_from": "flutter_code_with_questions_1601_1800_eng.csv",
"original_row": "170",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_184_0132 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/widgets.dart';\nimport 'package:flutter_test/flutter_test.dart';\nimport 'package:macrobenchmarks/common... | {
"accepted_by": "synthetic_generation",
"code_len": 935,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_1_200_eng.csv",
"original_row": "184",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_611_0133 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:async';\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/fr... | {
"accepted_by": "synthetic_generation",
"code_len": 348,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_601_800_eng.csv",
"original_row": "11",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2982_0134 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/widgets/autocomplete/raw_autocomplete.1.dart' as ex... | {
"accepted_by": "synthetic_generation",
"code_len": 2530,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2801_3000_eng.csv",
"original_row": "182",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3586_0135 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:collection';\nimport 'dart:math' as math;\nimport 'dart:ui' as ui show Gradient, lerpDouble;\nimport 'pac... | {
"accepted_by": "synthetic_generation",
"code_len": 15343,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_3401_3600_eng.csv",
"original_row": "186",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1185_0136 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:js_interop';\nimport 'package:web/web.dart' as web;\nFuture<void> main() async {\n try {\n final web.Response r... | {
"accepted_by": "synthetic_generation",
"code_len": 492,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from":... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "185",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3172_0137 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_test/flutter_test.dart';\nimport 'package:hello_world/main.dart' as hello_world;\nvoid main() {\n testW... | {
"accepted_by": "synthetic_generation",
"code_len": 300,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "172",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4203_0138 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/material.dart';\nimport 'package:flutter_test/flutter_test.da... | {
"accepted_by": "synthetic_generation",
"code_len": 10823,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materi... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "3",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2261_0139 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/services.dart';\nvoid main() => runApp(const MenuApp());\nenum ... | {
"accepted_by": "synthetic_generation",
"code_len": 6093,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2201_2400_eng.csv",
"original_row": "61",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4011_0140 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/gestures.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('wrapped HitTes... | {
"accepted_by": "synthetic_generation",
"code_len": 4581,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4001_4200_eng.csv",
"original_row": "11",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2584_0141 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const SliverMainAxisGroupExampleApp());\nclass SliverMainAxisGrou... | {
"accepted_by": "synthetic_generation",
"code_len": 1866,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2401_2600_eng.csv",
"original_row": "184",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_45_0142 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:a11y_assessments/use_cases/snack_bar.dart';\nimport 'package:flutter_test/flutter_test.dart';\nimport 'test_util... | {
"accepted_by": "synthetic_generation",
"code_len": 852,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_1_200_eng.csv",
"original_row": "45",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4233_0143 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\n@Tags(<String>['reduced-test-set'])\nlibrary;\nimport 'package:flutter/material.dart';\nimport 'package:flutter_test/flutter_tes... | {
"accepted_by": "synthetic_generation",
"code_len": 14162,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materi... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "33",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3106_0144 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/gestures.dart';\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/widgets/sc... | {
"accepted_by": "synthetic_generation",
"code_len": 1291,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "106",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2797_0145 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/material/list_tile/list_tile.selected.0.dart' as ex... | {
"accepted_by": "synthetic_generation",
"code_len": 713,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "197",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2227_0146 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() {\n runApp(const IconButtonToggleApp());\n}\nclass IconButtonToggleApp ext... | {
"accepted_by": "synthetic_generation",
"code_len": 4003,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2201_2400_eng.csv",
"original_row": "27",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3986_0147 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('LicenseEntry... | {
"accepted_by": "synthetic_generation",
"code_len": 4882,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_3801_4000_eng.csv",
"original_row": "186",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_14_0149 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport '../utils.dart';\nimport 'use_cases.dart';\nclass NavigationBarUseCase extends U... | {
"accepted_by": "synthetic_generation",
"code_len": 1888,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_1_200_eng.csv",
"original_row": "14",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3295_0150 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'package:flutter/widgets.dart';\nimport 'app.dart' show CupertinoApp;\nimport 'route.dart';\nclass CupertinoTab... | {
"accepted_by": "synthetic_generation",
"code_len": 4292,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_3201_3400_eng.csv",
"original_row": "95",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3523_0151 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:ui' as ui show BoxHeightStyle, BoxWidthStyle;\nimport 'package:flutter/cupertino.dart';\nimport 'package:... | {
"accepted_by": "synthetic_generation",
"code_len": 19632,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cupert... | {
"derived_from": "flutter_code_with_questions_3401_3600_eng.csv",
"original_row": "123",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_919_0152 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_gallery/demo/all.dart';\nimport 'package:flutter_gallery/galler... | {
"accepted_by": "synthetic_generation",
"code_len": 34422,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materi... | {
"derived_from": "flutter_code_with_questions_801_1000_eng.csv",
"original_row": "119",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2743_0153 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/material/divider/divider.1.dart' as example;\nimpor... | {
"accepted_by": "synthetic_generation",
"code_len": 623,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "143",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1186_0154 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:js_interop';\nimport 'package:web/web.dart' as web;\nFuture<void> main() async {\n if (await testFetchResources())... | {
"accepted_by": "synthetic_generation",
"code_len": 1005,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from"... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "186",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3508_0155 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'package:flutter/cupertino.dart';\nimport 'package:flutter/foundation.dart';\nimport 'color_scheme.dart';\nimpo... | {
"accepted_by": "synthetic_generation",
"code_len": 14276,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cupert... | {
"derived_from": "flutter_code_with_questions_3401_3600_eng.csv",
"original_row": "108",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3507_0156 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:ui' show lerpDouble;\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/widgets.dart';\n... | {
"accepted_by": "synthetic_generation",
"code_len": 8220,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_3401_3600_eng.csv",
"original_row": "107",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3906_0157 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\n@Tags(<String>['reduced-test-set'])\nlibrary;\nimport 'package:flutter/material.dart';\nimport 'package:flutter_test/flutter_tes... | {
"accepted_by": "synthetic_generation",
"code_len": 4818,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_3801_4000_eng.csv",
"original_row": "106",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2991_0158 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/widgets/basic/clip_rrect.1.dart' as example;\nimpor... | {
"accepted_by": "synthetic_generation",
"code_len": 688,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_2801_3000_eng.csv",
"original_row": "191",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4297_0159 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:ui';\nimport 'package:flutter/rendering.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n ... | {
"accepted_by": "synthetic_generation",
"code_len": 6463,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "97",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2124_0160 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/cupertino.dart';\nvoid main() => runApp(const TabControllerApp());\nclass TabControllerApp extends State... | {
"accepted_by": "synthetic_generation",
"code_len": 1688,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cuperti... | {
"derived_from": "flutter_code_with_questions_2001_2200_eng.csv",
"original_row": "124",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2729_0161 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/material/data_table/data_table.0.dart' as example;\... | {
"accepted_by": "synthetic_generation",
"code_len": 1316,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "129",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2693_0162 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/material/badge/badge.0.dart' as example;\nimport 'p... | {
"accepted_by": "synthetic_generation",
"code_len": 481,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "93",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2145_0163 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const AutocompleteExampleApp());\nclass AutocompleteExampleApp ex... | {
"accepted_by": "synthetic_generation",
"code_len": 1444,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2001_2200_eng.csv",
"original_row": "145",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2889_0164 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/material/switch/switch.2.dart' as example;\nimport ... | {
"accepted_by": "synthetic_generation",
"code_len": 872,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_2801_3000_eng.csv",
"original_row": "89",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2323_0165 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() {\n runApp(const PinnedSearchBarApp());\n}\nclass PinnedSearchBarApp exten... | {
"accepted_by": "synthetic_generation",
"code_len": 2411,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2201_2400_eng.csv",
"original_row": "123",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3151_0166 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/widgets/transitions/listenable_builder.1.dart' as e... | {
"accepted_by": "synthetic_generation",
"code_len": 964,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "151",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_648_0167 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/framework.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 302,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_601_800_eng.csv",
"original_row": "48",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3795_0168 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:math' as math;\nimport 'dart:ui' as ui;\nimport 'package:flutter/foundation.dart';\nimport 'package:flutt... | {
"accepted_by": "synthetic_generation",
"code_len": 30632,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_3601_3800_eng.csv",
"original_row": "195",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4218_0169 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/rendering.dart';\nimport 'package:flutter_test/flutter_test.dar... | {
"accepted_by": "synthetic_generation",
"code_len": 20325,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materi... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "18",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_836_0170 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/cupertino.dart';\nimport '../../gallery/demo.dart';\nclass CupertinoSliderDemo extends StatefulWidget {\... | {
"accepted_by": "synthetic_generation",
"code_len": 2213,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cuperti... | {
"derived_from": "flutter_code_with_questions_801_1000_eng.csv",
"original_row": "36",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1422_0171 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:async';\nimport 'dart:convert';\nimport 'dart:io' as io;\nimport 'package:args/command_runner.dart';\nimport 'packa... | {
"accepted_by": "synthetic_generation",
"code_len": 5444,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from"... | {
"derived_from": "flutter_code_with_questions_1401_1600_eng.csv",
"original_row": "22",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1887_0172 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:ui';\nimport 'package:test/test.dart';\nvoid main() {\n test('Picture construction invokes onCreate once', () asyn... | {
"accepted_by": "synthetic_generation",
"code_len": 1642,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from"... | {
"derived_from": "flutter_code_with_questions_1801_2000_eng.csv",
"original_row": "87",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_78_0173 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('test smoke test -- this test should pass', () async {\n... | {
"accepted_by": "synthetic_generation",
"code_len": 158,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_1_200_eng.csv",
"original_row": "78",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3547_0174 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'package:flutter/widgets.dart';\nimport 'color_scheme.dart';\nimport 'constants.dart';\nimport 'text_button.dar... | {
"accepted_by": "synthetic_generation",
"code_len": 3670,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_3401_3600_eng.csv",
"original_row": "147",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1026_0175 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:math';\nimport 'package:flutter/material.dart';\nimport 'animation.dart';\nconst double contentHeight = 80.0;\ncons... | {
"accepted_by": "synthetic_generation",
"code_len": 8524,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "26",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2506_0176 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:vector_math/vector_math_64.dart' show Quad, Vector3;\nvoid main() => ru... | {
"accepted_by": "synthetic_generation",
"code_len": 3466,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2401_2600_eng.csv",
"original_row": "106",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2542_0177 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/services.dart';\nvoid main() => runApp(const RawMenuAnchorGroup... | {
"accepted_by": "synthetic_generation",
"code_len": 8862,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2401_2600_eng.csv",
"original_row": "142",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4063_0178 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/rendering.dart';\nimport 'package:flutter_test/flutter_test.dar... | {
"accepted_by": "synthetic_generation",
"code_len": 10753,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materi... | {
"derived_from": "flutter_code_with_questions_4001_4200_eng.csv",
"original_row": "63",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2665_0180 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/cupertino.dart';\nimport 'package:flutter_api_samples/cupertino/tab_scaffold/cupertino_tab_scaffold.0.da... | {
"accepted_by": "synthetic_generation",
"code_len": 860,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_cupertin... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "65",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_514_0181 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/framework.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 309,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_401_600_eng.csv",
"original_row": "114",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3004_0182 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_api_samples/widgets/basic/offstage.0.dart' as example;\nimport 'package:flutter_test/flutter_test.dart';... | {
"accepted_by": "synthetic_generation",
"code_len": 704,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "4",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3215_0184 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_test/flutter_test.dart';\nimport '../../../widgets/styled_text.dart' as demo;\nvoid main() {\n testWidg... | {
"accepted_by": "synthetic_generation",
"code_len": 232,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_3201_3400_eng.csv",
"original_row": "15",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_431_0185 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:async';\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/fr... | {
"accepted_by": "synthetic_generation",
"code_len": 383,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_401_600_eng.csv",
"original_row": "31",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2371_0186 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const TooltipExampleApp());\nclass TooltipExampleApp extends Stat... | {
"accepted_by": "synthetic_generation",
"code_len": 1170,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2201_2400_eng.csv",
"original_row": "171",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4293_0187 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/rendering.dart';\nimport 'package:flutter_test/flutter_test.dart';\nimport 'rendering_tester.dart';\nvoi... | {
"accepted_by": "synthetic_generation",
"code_len": 5561,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "93",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_74_0188 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:io' as system;\nvoid main() {\n system.Process.killPid(system.pid, system.ProcessSignal.sigsegv);\n}\n```",
"r... | {
"accepted_by": "synthetic_generation",
"code_len": 111,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from":... | {
"derived_from": "flutter_code_with_questions_1_200_eng.csv",
"original_row": "74",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4308_0189 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:async';\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/gestures.dart';\nimport 'package:flutte... | {
"accepted_by": "synthetic_generation",
"code_len": 1114,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "108",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1200_0190 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter_test/flutter_test.dart';\nimport 'package:integration_test/in... | {
"accepted_by": "synthetic_generation",
"code_len": 442,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "200",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2286_0191 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const ProgressIndicatorExampleApp());\nclass ProgressIndicatorExa... | {
"accepted_by": "synthetic_generation",
"code_len": 2509,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2201_2400_eng.csv",
"original_row": "86",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2199_0192 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const DividerExampleApp());\nclass DividerExampleApp extends Stat... | {
"accepted_by": "synthetic_generation",
"code_len": 1422,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2001_2200_eng.csv",
"original_row": "199",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2487_0193 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/gestures.dart';\nimport 'package:flutter/material.dart';\nvoid main() {\n debugPrintGestureArenaDiagnos... | {
"accepted_by": "synthetic_generation",
"code_len": 3629,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2401_2600_eng.csv",
"original_row": "87",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3357_0194 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nlibrary;\nimport 'dart:math';\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/scheduler.dart';\nimport 'cons... | {
"accepted_by": "synthetic_generation",
"code_len": 24737,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_3201_3400_eng.csv",
"original_row": "157",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4290_0195 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/physics.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('nearEquals', ()... | {
"accepted_by": "synthetic_generation",
"code_len": 519,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "90",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2432_0196 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(const AnimatedSwitcherExampleApp());\nclass AnimatedSwitcherExamp... | {
"accepted_by": "synthetic_generation",
"code_len": 1488,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2401_2600_eng.csv",
"original_row": "32",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4019_0197 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/gestures.dart';\nimport 'package:flutter_test/flutter_test.dart';\nclass TestPointerSignalListener {\n ... | {
"accepted_by": "synthetic_generation",
"code_len": 3581,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4001_4200_eng.csv",
"original_row": "19",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_449_0198 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:io';\nimport 'package:flutter_devicelab/framework/framework.dart';\nimport 'package:flutter_devicelab/framework/ios... | {
"accepted_by": "synthetic_generation",
"code_len": 24176,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_401_600_eng.csv",
"original_row": "49",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3075_0199 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/rendering.dart';\nimport 'package:flutter_api_samples/widgets/overlay/overlay_portal.0.dart' as example;... | {
"accepted_by": "synthetic_generation",
"code_len": 1569,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "75",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4224_0201 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'dart:math' as math;\nimport 'package:flutter/painting.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid app... | {
"accepted_by": "synthetic_generation",
"code_len": 13668,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": ... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "24",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4396_0202 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/services.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n TestWidgetsFlutterBi... | {
"accepted_by": "synthetic_generation",
"code_len": 1491,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "196",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_801_0203 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:channels/main.dart';\nimport 'package:flutter/widgets.dart';\nimport 'package:flutter_test/flutter_test.dart';\n... | {
"accepted_by": "synthetic_generation",
"code_len": 1056,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "... | {
"derived_from": "flutter_code_with_questions_801_1000_eng.csv",
"original_row": "1",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1157_0204 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n testWidgets('Can loa... | {
"accepted_by": "synthetic_generation",
"code_len": 452,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_material... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "157",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1004_0205 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:intl/intl.dart';\nimport '../../gallery_localizations.dart';\nimport 'm... | {
"accepted_by": "synthetic_generation",
"code_len": 6487,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "4",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_622_0206 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package:flutter_devicelab/framework/framework.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 318,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_601_800_eng.csv",
"original_row": "22",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1596_0207 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\n@DefaultAsset('skwasm')\nlibrary skwasm_impl;\nimport 'dart:ffi';\nimport 'package:ui/src/engine/skwasm/skwasm_impl.dart';\nfina... | {
"accepted_by": "synthetic_generation",
"code_len": 821,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question"
],
"merged_at": "2026-07-11",
"merged_from":... | {
"derived_from": "flutter_code_with_questions_1401_1600_eng.csv",
"original_row": "196",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4287_0208 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/physics.dart';\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n test('When snapToEnd ... | {
"accepted_by": "synthetic_generation",
"code_len": 923,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code"
],
"merged_at": "2... | {
"derived_from": "flutter_code_with_questions_4201_4400_eng.csv",
"original_row": "87",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1030_0209 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter/services.dart';\nclass HighlightFocus extends StatefulWidget {\... | {
"accepted_by": "synthetic_generation",
"code_len": 2011,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_1001_1200_eng.csv",
"original_row": "30",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2764_0210 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Refactor this Flutter code for better null safety and performance:\n```dart\nimport 'package:flutter/material.dart';\nimport 'package:flutter_api_samples/material/floating_action_button/floating_action_but... | {
"accepted_by": "synthetic_generation",
"code_len": 2785,
"difficulty": "unknown",
"final_v1_decision": "accept",
"final_v1_split": "train",
"heuristic_decision": "keep",
"heuristic_reasons": [
"mentions_flutter_question",
"mentions_dart_question",
"imports_flutter_code",
"imports_materia... | {
"derived_from": "flutter_code_with_questions_2601_2800_eng.csv",
"original_row": "164",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.