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_bug_fix_2603_0398 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Fix the bug in the following Flutter code:\n```dart\nimport 'package:flutter/material.dart';\nvoid main() => runApp(DecoratedBoxTransitionExampleApp());\nclass DecoratedBoxTransitionExampleApp extends Stat... | {
"accepted_by": "synthetic_generation",
"code_len": 1960,
"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": "3",
"status": "P2_synthetic",
"synth_method": "template_bug_fix",
"type": "synthetic"
} | train | train | bug_fix |
synth_bug_fix_3566_0399 | [
{
"content": "You are a Flutter and Dart coding assistant.",
"role": "system"
},
{
"content": "Fix the bug in the following Flutter code:\n```dart\nlibrary;\nimport 'dart:ui' show TextDirection;\nexport 'dart:ui'\n show\n BlendMode,\n BlurStyle,\n Canvas,\n Clip,\n ... | {
"accepted_by": "synthetic_generation",
"code_len": 2256,
"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_3401_3600_eng.csv",
"original_row": "166",
"status": "P2_synthetic",
"synth_method": "template_bug_fix",
"type": "synthetic"
} | train | train | bug_fix |
synth_refactor_2887_0000 | [
{
"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.0.dart' as example;\nimport ... | {
"accepted_by": "synthetic_generation",
"code_len": 637,
"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": "87",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2486_0001 | [
{
"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 GestureDetectorExampleApp());\nclass GestureDetectorExample... | {
"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_2401_2600_eng.csv",
"original_row": "86",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_143_0002 | [
{
"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 'material3.dart';\nimport 'recorder.dart';\nclass BenchMaterial3Components exten... | {
"accepted_by": "synthetic_generation",
"code_len": 369,
"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_1_200_eng.csv",
"original_row": "143",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3914_0003 | [
{
"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/cupertino.dart';\nimport 'package:flutter/foundation.dart... | {
"accepted_by": "synthetic_generation",
"code_len": 29159,
"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_3801_4000_eng.csv",
"original_row": "114",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2086_0004 | [
{
"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 CupertinoIndicatorApp());\nclass CupertinoIndicatorApp ext... | {
"accepted_by": "synthetic_generation",
"code_len": 1901,
"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": "86",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4149_0005 | [
{
"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';\nconst Color kSelectedColor = Color(0x... | {
"accepted_by": "synthetic_generation",
"code_len": 13466,
"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": "149",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4080_0006 | [
{
"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/rendering.dart';\nimpo... | {
"accepted_by": "synthetic_generation",
"code_len": 27565,
"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": "80",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_236_0007 | [
{
"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/animation.dart';\nimport '../common.dart';\nconst int _kNumIters = 10000;\nvoid _testCurve(\n Curve cur... | {
"accepted_by": "synthetic_generation",
"code_len": 1471,
"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_201_400_eng.csv",
"original_row": "36",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_639_0008 | [
{
"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/framework.dart';\nimport 'package:flutter_devicelab/tasks/plugin_tests.dart';\nFutur... | {
"accepted_by": "synthetic_generation",
"code_len": 440,
"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": "39",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3079_0009 | [
{
"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/page_storage/page_storage.0.dart' as exampl... | {
"accepted_by": "synthetic_generation",
"code_len": 981,
"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": "79",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2575_0010 | [
{
"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 SingleChildScrollViewExampleApp());\nclass SingleChildScrol... | {
"accepted_by": "synthetic_generation",
"code_len": 1632,
"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": "175",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3912_0011 | [
{
"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/foundation.dart';\nimport 'package:flutter/gestures.dart';\nim... | {
"accepted_by": "synthetic_generation",
"code_len": 21207,
"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_3801_4000_eng.csv",
"original_row": "112",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3087_0012 | [
{
"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/restoration/restoration_mixin.0.dart' as ex... | {
"accepted_by": "synthetic_generation",
"code_len": 1051,
"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": "87",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3575_0013 | [
{
"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 lerpDouble;\nimport 'package:flutter/foundation.dart';\nimport 'basic_types.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 3734,
"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": "175",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_674_0014 | [
{
"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": 365,
"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": "74",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2810_0015 | [
{
"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/navigation_bar/navigation_bar.0.dart' as e... | {
"accepted_by": "synthetic_generation",
"code_len": 1426,
"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": "10",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1159_0016 | [
{
"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_driver/flutter_driver.dart';\nimport 'package:test/test.dart' hide TypeMatcher, isInstanceOf;\nvoid main... | {
"accepted_by": "synthetic_generation",
"code_len": 502,
"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": "159",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_264_0018 | [
{
"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_driver/flutter_driver.dart';\nimport 'package:test/test.dart' hide TypeMatcher, isInstanceOf;\nvoid main... | {
"accepted_by": "synthetic_generation",
"code_len": 1623,
"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_201_400_eng.csv",
"original_row": "64",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3086_0019 | [
{
"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/services.dart';\nimport 'package:flutter/widgets.dart';\nimport... | {
"accepted_by": "synthetic_generation",
"code_len": 4763,
"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": "86",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_8_0020 | [
{
"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 CheckBoxListTile extends UseCa... | {
"accepted_by": "synthetic_generation",
"code_len": 1363,
"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": "8",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1202_0021 | [
{
"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": 444,
"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_1201_1400_eng.csv",
"original_row": "2",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2677_0022 | [
{
"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/animated_icon/animated_icons_data.0.dart' ... | {
"accepted_by": "synthetic_generation",
"code_len": 948,
"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": "77",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3066_0023 | [
{
"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/services.dart';\nimp... | {
"accepted_by": "synthetic_generation",
"code_len": 4681,
"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": "66",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_461_0024 | [
{
"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": 334,
"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": "61",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2481_0025 | [
{
"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 FormExampleApp());\nclass FormExampleApp extends StatelessW... | {
"accepted_by": "synthetic_generation",
"code_len": 1476,
"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": "81",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2389_0026 | [
{
"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/material.dart';\nimport 'package:flutter/services.dart';\nvoid main() {\n runApp(con... | {
"accepted_by": "synthetic_generation",
"code_len": 2430,
"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": "189",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_765_0027 | [
{
"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:android_driver_extensions/native_driver.dart';\nimport 'package:android_driver_extensions/skia_gold.dart';\nimpo... | {
"accepted_by": "synthetic_generation",
"code_len": 1452,
"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_601_800_eng.csv",
"original_row": "165",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2316_0028 | [
{
"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 SnackBarApp());\nclass SnackBarApp extends StatelessWidget ... | {
"accepted_by": "synthetic_generation",
"code_len": 1846,
"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": "116",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3551_0029 | [
{
"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/services.dart';\nimport 'package:flutter/widgets.dart';\nimport 'debug.dart';\nimport 'materia... | {
"accepted_by": "synthetic_generation",
"code_len": 3649,
"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": "151",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2361_0030 | [
{
"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 TextFieldExampleApp());\nclass TextFieldExampleApp extends ... | {
"accepted_by": "synthetic_generation",
"code_len": 1627,
"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": "161",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2935_0031 | [
{
"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_api_samples/services/mouse_cursor/mouse_cursor.0.dart' as exampl... | {
"accepted_by": "synthetic_generation",
"code_len": 692,
"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_2801_3000_eng.csv",
"original_row": "135",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2457_0032 | [
{
"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 ListenerApp());\nclass ListenerApp extends StatelessWidget ... | {
"accepted_by": "synthetic_generation",
"code_len": 1969,
"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": "57",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2902_0033 | [
{
"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/text_button/text_button.1.dart' as example... | {
"accepted_by": "synthetic_generation",
"code_len": 1442,
"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": "102",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2285_0034 | [
{
"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": 2165,
"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": "85",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_776_0035 | [
{
"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:android_driver_extensions/native_driver.dart';\nimport 'package:android_driver_extensions/skia_gold.dart';\nimpo... | {
"accepted_by": "synthetic_generation",
"code_len": 2605,
"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_601_800_eng.csv",
"original_row": "176",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1168_0036 | [
{
"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_driver/flutter_driver.dart';\nimport 'package:test/test.dart' hide TypeMatcher, isInstanceOf;\nvoid main... | {
"accepted_by": "synthetic_generation",
"code_len": 504,
"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": "168",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3005_0037 | [
{
"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/overflowbox.0.dart' as example;\nimpo... | {
"accepted_by": "synthetic_generation",
"code_len": 853,
"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": "5",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3939_0038 | [
{
"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:typed_data';\nimport 'package:flutter/cupertino.dart';\nimport 'package:flutter_test/flutter_test.dart';\nimport '.... | {
"accepted_by": "synthetic_generation",
"code_len": 19337,
"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_3801_4000_eng.csv",
"original_row": "139",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1064_0039 | [
{
"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:animations/animations.dart';\nimport 'package:flutter/material.dart';\nimport 'package:flutter/services.dart';\n... | {
"accepted_by": "synthetic_generation",
"code_len": 3461,
"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": "64",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2319_0040 | [
{
"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 ShowBottomSheetExampleApp());\nclass ShowBottomSheetExample... | {
"accepted_by": "synthetic_generation",
"code_len": 3310,
"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": "119",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2925_0041 | [
{
"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_api_samples/rendering... | {
"accepted_by": "synthetic_generation",
"code_len": 1659,
"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": "125",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2_0042 | [
{
"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/rendering.dart';\nim... | {
"accepted_by": "synthetic_generation",
"code_len": 2607,
"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": "2",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2336_0043 | [
{
"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 SliderExampleApp());\nclass SliderExampleApp extends Statel... | {
"accepted_by": "synthetic_generation",
"code_len": 2018,
"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": "136",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2223_0044 | [
{
"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 StandardFabLocationExampleApp());\nclass StandardFabLocatio... | {
"accepted_by": "synthetic_generation",
"code_len": 1251,
"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": "23",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3739_0045 | [
{
"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';\nimport 'package:flutter/foundation.dart';\nimport 'binding.dart';\ntypedef AppExitRequestCallback =... | {
"accepted_by": "synthetic_generation",
"code_len": 5225,
"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": "139",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3756_0046 | [
{
"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/foundation.dart';\nimport 'package:flutter/painting.dart';\nimport 'package:flutter/services.d... | {
"accepted_by": "synthetic_generation",
"code_len": 39545,
"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": "156",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2435_0047 | [
{
"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/material.dart';\nimport 'package:flutter/services.dart';\nvoid main() {\n runApp(con... | {
"accepted_by": "synthetic_generation",
"code_len": 2525,
"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": "35",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3249_0048 | [
{
"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/foundation.dart';\nimport 'curves.dart';\nimport 'tween.dart';\n@immutable\nclass AnimationSty... | {
"accepted_by": "synthetic_generation",
"code_len": 2283,
"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": "49",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3770_0049 | [
{
"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/foundation.dart';\nimport 'basic.dart';\nimport 'focus_manager.dart';\nimport 'framework.dart'... | {
"accepted_by": "synthetic_generation",
"code_len": 14488,
"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": "170",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3115_0050 | [
{
"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_api_samples/widgets/shortcuts/logical_key_set.0.dart' as exampl... | {
"accepted_by": "synthetic_generation",
"code_len": 2890,
"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": "115",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3945_0051 | [
{
"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/foundation.dart';\nimport 'package:flutter/gestures.dart';\nim... | {
"accepted_by": "synthetic_generation",
"code_len": 20434,
"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_3801_4000_eng.csv",
"original_row": "145",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3574_0052 | [
{
"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 show Shadow, lerpDouble;\nimport 'package:flutter/foundation.dart'... | {
"accepted_by": "synthetic_generation",
"code_len": 3110,
"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": "174",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3308_0053 | [
{
"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';\n@JS('window.flutterCanvasKit')\nexternal JSAny? get _windowFlutterCanvasKit;\n@JS('window._flutter_sk... | {
"accepted_by": "synthetic_generation",
"code_len": 279,
"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_3201_3400_eng.csv",
"original_row": "108",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1035_0054 | [
{
"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:url_launcher/url_launcher.dart... | {
"accepted_by": "synthetic_generation",
"code_len": 4115,
"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": "35",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_524_0055 | [
{
"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": 310,
"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": "124",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2210_0056 | [
{
"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';\nenum ColorItem {\n blue('Blue', Colors.blue),\n pink('Pink', Colors.pink),\n green('... | {
"accepted_by": "synthetic_generation",
"code_len": 2218,
"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": "10",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2509_0057 | [
{
"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 LayoutBuilderExampleApp());\nclass LayoutBuilderExampleApp ... | {
"accepted_by": "synthetic_generation",
"code_len": 1293,
"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": "109",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3963_0058 | [
{
"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/src/foundation/_isolates_io.dart';\nint getLength(String s) {\n return s.length;\n}\nFuture<void> main(... | {
"accepted_by": "synthetic_generation",
"code_len": 303,
"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": "163",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2368_0060 | [
{
"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';\nconst List<Widget> fruits = <Widget>[Text('Apple'), Text('Banana'), Text('Orange')];\nc... | {
"accepted_by": "synthetic_generation",
"code_len": 4611,
"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": "168",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4051_0061 | [
{
"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": 14443,
"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": "51",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1222_0062 | [
{
"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/material.dart';\nclass ExampleDragTarget extends StatefulWidget {\n const ... | {
"accepted_by": "synthetic_generation",
"code_len": 7842,
"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_1201_1400_eng.csv",
"original_row": "22",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_910_0063 | [
{
"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:developer';\nimport 'dart:math' as math;\nimport 'package:flutter/gestures.dart' show DragStartBehavior;\nimport 'p... | {
"accepted_by": "synthetic_generation",
"code_len": 12007,
"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": "110",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_126_0064 | [
{
"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' show cos, sin;\nimport 'dart:typed_data';\nimport 'package:flutter/material.dart';\nclass RRectBlur extends S... | {
"accepted_by": "synthetic_generation",
"code_len": 2179,
"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": "126",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_275_0065 | [
{
"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/widgets.dart';\nimport 'package:flutter... | {
"accepted_by": "synthetic_generation",
"code_len": 2180,
"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_201_400_eng.csv",
"original_row": "75",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4342_0066 | [
{
"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';\nvoid main() {\n testWidgets('relayout... | {
"accepted_by": "synthetic_generation",
"code_len": 1043,
"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": "142",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_4082_0067 | [
{
"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/gestures.dart';\nimport 'package:flutter/material.dart';\nimp... | {
"accepted_by": "synthetic_generation",
"code_len": 47230,
"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": "82",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_473_0068 | [
{
"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": 312,
"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": "73",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3191_0069 | [
{
"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';\nclass LifecycleWatcher extends StatefulWidget {\n const LifecycleWatcher({super.key});\... | {
"accepted_by": "synthetic_generation",
"code_len": 1126,
"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": "191",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2974_0070 | [
{
"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/animated_size/animated_size.0.dart' as exam... | {
"accepted_by": "synthetic_generation",
"code_len": 1682,
"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": "174",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1184_0071 | [
{
"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 final StringBuffer output = Str... | {
"accepted_by": "synthetic_generation",
"code_len": 528,
"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": "184",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2802_0072 | [
{
"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/menu_anchor/checkbox_menu_button.0.dart' a... | {
"accepted_by": "synthetic_generation",
"code_len": 1154,
"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": "2",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3462_0073 | [
{
"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';\nclass GridTile extends StatelessWidget {\n const GridTile({super.key, this.he... | {
"accepted_by": "synthetic_generation",
"code_len": 643,
"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_3401_3600_eng.csv",
"original_row": "62",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2886_0074 | [
{
"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/stepper/stepper.controls_builder.0.dart' a... | {
"accepted_by": "synthetic_generation",
"code_len": 733,
"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": "86",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1893_0075 | [
{
"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 const int numSemanticsFlags = 29;\n test('SemanticsFlag.v... | {
"accepted_by": "synthetic_generation",
"code_len": 1425,
"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": "93",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_911_0076 | [
{
"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';\nabstract final class GalleryIcons {\n static const IconData tooltip = IconData(0xe900,... | {
"accepted_by": "synthetic_generation",
"code_len": 3443,
"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": "111",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_25_0077 | [
{
"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 '../common/dynamic_title.dart';\nimport 'action_chip.dart';\nimport 'app_bar.dart... | {
"accepted_by": "synthetic_generation",
"code_len": 1457,
"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_1_200_eng.csv",
"original_row": "25",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_627_0078 | [
{
"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": 311,
"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": "27",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3033_0079 | [
{
"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/heroes/hero.0.dart' as example;\nimport 'pa... | {
"accepted_by": "synthetic_generation",
"code_len": 2234,
"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": "33",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1076_0081 | [
{
"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 '../../../gallery_localizations.dart';\nimport '../charts/pie_chart.dart';\nimpor... | {
"accepted_by": "synthetic_generation",
"code_len": 1350,
"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_1001_1200_eng.csv",
"original_row": "76",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3243_0082 | [
{
"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 rendering;\nexport 'package:flutter/foundation.dart'\n show DiagnosticLevel, ValueChanged, ValueGetter, ValueSetter, ... | {
"accepted_by": "synthetic_generation",
"code_len": 2162,
"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_3201_3400_eng.csv",
"original_row": "43",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3909_0083 | [
{
"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/cupertino.dart';\nimport 'package:flutter/scheduler.dart'... | {
"accepted_by": "synthetic_generation",
"code_len": 4716,
"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_3801_4000_eng.csv",
"original_row": "109",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1951_0084 | [
{
"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 io show Directory, File, Platform, stderr;\nimport 'package:args/args.dart';\nimport 'package:engine_repo_to... | {
"accepted_by": "synthetic_generation",
"code_len": 9669,
"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": "151",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_732_0085 | [
{
"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' show json;\nimport 'dart:io';\nimport 'package:flutter_devicelab/framework/devices.dart';\nimport 'package... | {
"accepted_by": "synthetic_generation",
"code_len": 6066,
"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_601_800_eng.csv",
"original_row": "132",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3195_0086 | [
{
"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_examples_layers/main.dart' as demo;\nimport 'package:flutter_test/flutter_test.dart';\nvoid main() {\n ... | {
"accepted_by": "synthetic_generation",
"code_len": 229,
"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": "195",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_820_0087 | [
{
"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';\nconst Color _mariner = Color(0xFF3B5F8F);\nconst Color _mediumPurple = Color(0xFF8266D4... | {
"accepted_by": "synthetic_generation",
"code_len": 4070,
"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": "20",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3248_0088 | [
{
"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 lerpDouble;\nimport 'package:flutter/foundation.dart';\nimport 'package:flutter/physics.da... | {
"accepted_by": "synthetic_generation",
"code_len": 18656,
"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": "48",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2408_0089 | [
{
"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';\nvoid main() => runApp(const ExampleApp());\nclass ExampleApp extends StatelessWidget {\n... | {
"accepted_by": "synthetic_generation",
"code_len": 707,
"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_2401_2600_eng.csv",
"original_row": "8",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3116_0090 | [
{
"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_api_samples/widgets/shortcuts/shortcuts.0.dart' as example;\nim... | {
"accepted_by": "synthetic_generation",
"code_len": 1220,
"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": "116",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3041_0091 | [
{
"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/implicit_animations/animated_padding.0.dart... | {
"accepted_by": "synthetic_generation",
"code_len": 1061,
"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": "41",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3130_0092 | [
{
"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/sliver_resizing_header.0.dart' as ex... | {
"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_material... | {
"derived_from": "flutter_code_with_questions_3001_3200_eng.csv",
"original_row": "130",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_978_0093 | [
{
"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 CupertinoScrollbarDemo extends State... | {
"accepted_by": "synthetic_generation",
"code_len": 996,
"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_801_1000_eng.csv",
"original_row": "178",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_3156_0095 | [
{
"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/relative_positioned_transition.... | {
"accepted_by": "synthetic_generation",
"code_len": 1964,
"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": "156",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2172_0098 | [
{
"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() => runApp(const LabeledCheckboxApp... | {
"accepted_by": "synthetic_generation",
"code_len": 2337,
"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": "172",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2798_0099 | [
{
"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/material_state/material_state_border_side.... | {
"accepted_by": "synthetic_generation",
"code_len": 1118,
"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": "198",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2827_0100 | [
{
"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/progress_indicator/circular_progress_indic... | {
"accepted_by": "synthetic_generation",
"code_len": 886,
"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": "27",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_1883_0102 | [
{
"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:typed_data';\nimport 'dart:ui';\nimport 'package:test/test.dart';\nimport 'package:vector_math/vector_math_64.dart'... | {
"accepted_by": "synthetic_generation",
"code_len": 8958,
"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": "83",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_2386_0103 | [
{
"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() {\n runApp(const SampleApp());\n}\nclass SampleApp extends StatelessWidge... | {
"accepted_by": "synthetic_generation",
"code_len": 456,
"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_2201_2400_eng.csv",
"original_row": "186",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
synth_refactor_708_0104 | [
{
"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:args/args.dart';\nimport '../framework/devices.dart';\nimport '../framework/task_result.dart'... | {
"accepted_by": "synthetic_generation",
"code_len": 2575,
"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_601_800_eng.csv",
"original_row": "108",
"status": "P2_synthetic",
"synth_method": "template_refactor",
"type": "synthetic"
} | train | train | refactor |
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