zohaib304

class _MyChoiceChipState extends State<MyChoiceChip> {
  // List<ChoiceChipData> chips = ChoiceChipAll.all;
  List<String> _options = [
    '9th Class',
    '10th Class',
    'Fsc Part 1',
    'Fsc Part 2',
    'Entry test'
  ];
  int _selectedIndex;

zohaib304

import "dart:async";

Stream<int> boatStream() async* {
  for (int i = 0; i <= 10; i++) {
    await Future.delayed(Duration(seconds: 2));
    yield i;
  }
}

void main() {

zohaib304

// cubit expose its inner functions
// which can be called from outside to update its state
// the cubit functions are not stream which means they are pre defined functions.

import 'package:bloc/bloc.dart';

class CounterCubit extends Cubit<int> {
  CounterCubit() : super(0);

  void increment() => emit(state + 1);

zohaib304

Widget getTextWidgets(List<String> strings)
  {
    List<Widget> list = new List<Widget>();
    for(var i = 0; i < strings.length; i++){
        list.add(new Text(strings[i]));
    }
    return new Row(children: list);
  }

// or 

zohaib304

Container(
                margin: EdgeInsets.symmetric(horizontal: 10),
                child: InkWell(
                  customBorder: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(10),
                  ),
                  onTap: () {},
                  child: Ink(
                    height: 100,
                    decoration: BoxDecoration(

zohaib304

class Solution:
    def romanToInt(self, s: str) -> int:
        def value(r):
            if (r == 'I'):
                return 1
            if (r == 'V'):
                return 5
            if (r == 'X'):
                return 10
            if (r == 'L'):

zohaib304

# adjancy list...which can be represent as python dictionary

graph = {
  'A' : ['B','C'],
  'B' : ['D', 'E'],
  'C' : ['F'],
  'D' : ['A'],
  'E' : ['F'],
  'F' : []
}

zohaib304

/https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/

zohaib304

void main() {
  
  List<Map<String, dynamic>> myList = [
    {
      "Name": "Vent"
    },
    {
      "Name": "Product"

zohaib304

     import 'package:flutter/material.dart';

      class myscroll extends statelesswidget {
        @override
        widget build(buildcontext context) {
          return new materialapp(
            title: 'flutter demo',
            theme: new themedata(
              primaryswatch: colors.blue,
            ),