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sudo dpkg --configure -a |
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import 'package:sqflite/sqflite.dart'; | |
import 'dart:async'; | |
import 'dart:io'; | |
import 'package:path_provider/path_provider.dart'; | |
import 'package:notebuddy/models/note.dart'; | |
class DatabaseHelper { | |
static Database _database; | |
static DatabaseHelper _databaseHelper; //SINGLETON DBHELPER |
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String _validateEmail(String value) { | |
Pattern pattern = | |
r'^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$'; | |
RegExp regExp = new RegExp(pattern); | |
if (value.isEmpty) { | |
return "Please enter an E-Mail ID."; | |
} else if (!regExp.hasMatch(value)) { | |
return "Invalid E-Mail address."; | |
} else { | |
return null; |