I came across a behaviour I am unable to work around. Basically, I am trying to fetch data, and return a Future of these data, where some of the requests can fail but we can ignore them. This is my…
Withvar pinU = int.parse(pin.text); I get this error: E/flutter (16045): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: FormatException: Invalid number (at character 1) E/flutter (16045): E/flutter (16045): ^ With var pinU = pin as int; I get this error: E/flutter (16045): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception:…
I'm currently calculating 'fizziness' which is equal to volume * fizzyfactor / 100. However, the values become very long floats. I want to round them to one decimal point. When typecasting with numeric, it still has the same output. Why?…
If i have an array represented in an ArrayObject like this: $arrObj = new ArrayObject([ 'foo' => 1, 'bar' => 2, ]); Then I can comfortably cast it: print_r((array)$array); // output is as expected But I cannot pass it as…
i have 54 Classes (simplified, and anonimized in the example below) with Repos in my C# ASP.NET Core Application that all follow the same structure. So i decided to make a GenericRepository with interface and explicitly for those 54 i…
Trying to translate a uint256 number which is encoded as a 64-char / 256-bit hex. Eventually the result should be stored in a numeric(78,0) which is enough to encode an uint256. For smaller hex-strings there's pretty direct ways to encode…
How can I cast List<TenancyEntity> to List<Tenancy> ? I use below code but get exception var a = await _tenancyLocalDataSource.getTenancyList(); var b = a!.cast<Tenancy>(); debugPrint(b.toString()); Below are the both classes TenancyEntity import 'package:hive/hive.dart'; import '../../../domain/model/tenancy.dart'; part 'tenancy_entity.g.dart'; @HiveType(typeId: 1) class…
I've made a class that allows to split long double to an integer value and a binary exponent (for some precise calculations). My problem is pretty hard to reproduce because the class usually works great but on one specific machine…
I am in the middle of writing a library to dynamically serialise/deserialise any object in Dart/Flutter (Similar in idea to Pydantic for Python). However, I am finding it impossible to implement the last component, dynamic type casting. This is required…
import 'package:flutter/material.dart'; import 'package:get/get.dart'; //import 'package:get/get_core/src/get_main.dart'; import 'package:intl/intl.dart'; import 'package:menstrual_period_tracker/input2.dart'; import 'package:nepali_date_picker/nepali_date_picker.dart'; class Picker extends StatefulWidget { const Picker({super.key}); @override State<Picker> createState() => _PickerState(); } class _PickerState extends State<Picker> { NepaliDateTime _dateTime = NepaliDateTime.now(); void _showdatepicker() async { await showDatePicker(…