A value of type 'Iterable<NoteModel>' can't be returned from an async function-CodePudding

lib/database/database_helper.dart:54:51: Error: The argument type 'Map<dynamic, dynamic>' can't be assigned to the parameter type 'Map<String, dynamic>'.

'Map' is from 'dart:core'. return notes.map((e) => NoteModel.fromMap(e) ); ^ lib/database/database_helper.dart:54:22: Error: Method 'map' cannot be called on 'List<Map<dynamic, dynamic>>?' because it is potentially null.
'List' is from 'dart:core'.
'Map' is from 'dart:core'. Try calling using ?. instead. return notes.map((e) => NoteModel.fromMap(e) ); ^^^ lib/database/database_helper.dart:54:22: Error: A value of type 'Iterable' can't be returned from an async function with return type 'Future<List?>'.
'Iterable' is from 'dart:core'.
'NoteModel' is from 'package:note_sql_db/model/note.dart' ('lib/model/note.dart').
'Future' is from 'dart:async'.
'List' is from 'dart:core'. return notes.map((e) => NoteModel.fromMap(e) ); ^

FAILURE: Build failed with an exception.

Where: Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1070
What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'.

Process 'command 'C:\flutter\bin\flutter.bat'' finished with non-zero exit value 1

Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
Get more help at https://help.gradle.org

BUILD FAILED in 1m 25s Exception: Gradle task assembleDebug failed with exit code 1

CodePudding user response：

Simply add a .toList() will solve the problem of A value of type 'Iterable<NoteModel>' can't be returned from an async function with return type 'Future<List<NoteModel>?>'.

Please format your question and provide your code.

CodePudding user response：

The argument type 'Map<dynamic, dynamic>' can't be assigned to the parameter type 'Map<String, dynamic>'.

lib/database/database_helper.dart:54:46: Error: The argument type 'Map<dynamic, dynamic>' can't be assigned to the parameter type 'Map<String, dynamic>'.

'Map' is from 'dart:core'. notes?.map((e) => NoteModel.fromMap(e).toMap() );

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