Homework Help for Computer Science

Hi, I have a question about Python and Files

What to I do, in order to calculate the total of something out of the file?

For example, the file looks like this:

Day 1

BOAT 1, 67

BOAT 2, 38

BOAT3, 29

Day 2

BOAT 1, 29

BOAT 2, 73

........

and so on.

I want to know how do I calculate all numbers from all days, as well as for separate days. Thank you!

Hi, I have a question about Python and Files

What to I do, in order to calculate the total of something out of the file?

For example, the file looks like this:

Day 1

BOAT 1, 67

BOAT 2, 38

BOAT3, 29

Day 2

BOAT 1, 29

BOAT 2, 73

........

and so on.

I want to know how do I calculate all bolded numbers from all days, as well as for separate days. Thank you!

How to add data to the file in python? Like votes and party. Thank you

use java Use a GUI to open the file and display words create another class called WordGUI that will be a complete JFrame with a menu bar and menus. There should be two menus: one called File and another called List. The File menu should have the menu items Open and Quit. The List menu should have five menu items: A, E, I, O, and U.The content pane of the GUI should have a grid layout of one row and two columns. Clicking on File >Open should allow the user to choose a file. That file should be displayed in the left column, with the lines numbered (starting at 1). When the user clicks on List a choice can be made of one of the five vowels. Clicking on a vowel should list all the words starting with that vowel in sorted order in the right column. Each word should have the line number on which it appeared. Create a class to record the word and its line number create a class called WordLine that will have two instance variables: a String for the word, and an int for the line number on which the word appears. There should be a two-argument constructor, and error checking with an exception thrown if the line number is less than 1. You may store the WordLineobjects in either an array or a linked list. The exception thrown should be an InvalidWordLineException which you can create by extendingIllegalArgumentException    

Creating a food menu using Flutter version 3.3.8 inside Android Studio ver 2021.3.1.

If you can answer it can you please use the online flutter ide so I can see it better -

Solve the following problem using a Singly Linked List. Given a singly linked list of

characters, write a function to make word out of given letters in the list. Test Case:

Input:C->S->A->R->B->B->E->L->NULL,

Output:S->C->R->A->B->B->L->E->NULL

I need to Implement a get_valid_int function and use a for loop to convert the score to a letter grade in python. I want to know what I need to do to make my code work.

[The # are just possible ideas]

def get_valid_int(cutoff_list):

for i_score in cutoff_list:

     if 100 < i_score < 60:

         break

     else:

cutoff_list = [90, 80, 70, 60]

grade_list = ["A", "B", "C", "D", "F"]

   # get_vaild_int = i[0]

   #for

   #  return f this return

#else:

    # return -x

    # list -> ((inside,inside))

    #

# fill in code here

i_score = get_valid_int("Enter score: ")

for i in range(len(cutoff_list)):

print(i, grade_list[i],cutoff_list[i])

#if cutoff_list[i] == 60

     #break

# fill in compute grade code here

Hi kibettitus2020 saw your answer listed below- 

Question where do I insert it. I put the original code in this link

class RestaurantPage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text("Restaurant"), backgroundColor: Colors.red, ), body: SingleChildScrollView( child: Column( children: <Widget>[ Padding( padding: EdgeInsets.only(top: 10, left: 10.0), child: Row( mainAxisAlignment: MainAxisAlignment.spaceBetween, children: <Widget>[ IconButton( icon: Icon(Icons.arrow_back_ios), color: Colors.white, onPressed: () { Navigator.of(context).pop(); }, ), Container( width: 125.0, child: Row( mainAxisAlignment: MainAxisAlignment.spaceBetween, children: <Widget>[ IconButton( icon: Icon(Icons.filter_list), color: Colors.white, onPressed: () {}, ), IconButton( icon: Icon(Icons.menu), color: Colors

Using PsychoPy Builder, create a semantic decision task where participants are asked to identify if a word refers to an animal or not. The experiment should have four items (2 animal words and 2 non-animal words) which are presented in a random order. Participants should be given 4 seconds to respond per trial. Give feedback if their response was incorrect only.

Question 18 of 25 E

A company uses Dynamics 365 Supply Chain Management. The company wants to implement additional Dynamics 365 applications by using dual-write. You need to identify the other applications that use the Microsoft Dataverse platform.  Which three applications should you identify? Each correct answer presents a complete solution. 

NOTE: Each correct selection is worth one point. Select all answers that apply.

1.  Dynamics 365 Sales

2.  Dynamics 365 Fraud Protection

3.  Dynamics 365 Customer Service

4.  Dynamics 365 Business Central

5.  Dynamics 365 Field Service

Got the following error msg -  A value of type 'Color?' can't be assigned to a variable of type 'Color' because 'Color?' is nullable and 'Color' isn't. 

Using Flutter ver 3.3.6 it worked on a older version which I saw on youtube video. Code listed below -

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'info.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
const MyApp({super.key});

@override
Widget build(BuildContext context) {
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitUp,
]);
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData.light(),
home: const MyPage(),
);
}
}

class MyPage extends StatefulWidget {
const MyPage({super.key});

@override
State<MyPage> createState() => _MyPageState();
}

class _MyPageState extends State<MyPage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text("Restaurant"),
),
body: Padding(
padding: const EdgeInsets.all(5),
child: ListView(
scrollDirection: Axis.vertical,
children: <Widget>[
Hero(
tag: "cakeitem",
child: FittedBox(
child: GestureDetector(
onTap: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => InfoPage()),
);
},
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
itemcake(),
SizedBox(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/cake.jpg'),
),
),
),
],
),
),
),
),
),
FittedBox(
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
juiceitem(),
Container(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/juice.jpg'),
),
),
),
],
),
),
),
FittedBox(
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
pizzaitem(),
SizedBox(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/pizza.jpg'),
),
),
),
],
),
),
),
FittedBox(
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
eliteitem(),
Container(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/elite.jpg'),
),
),
),
],
),
),
),
],
),
),
);
}

Widget itemcake() {
return Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Italian Choco Cake",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Dark belgium chocolate",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.lightBlue[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Cold",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.red[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Fresh",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
);
}

Widget juiceitem() {
return Container(
//width: 150,
child: Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Fresh Mango Juice",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Dark belgium chocolate",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.lightBlue[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Cold",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.red[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Fresh",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.yellow[400],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"New",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
),
);
}

Widget pizzaitem() {
return Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Cheese Pizza Italy ",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Double cheese New York Style",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.deepOrange[300],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Spicy",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.yellow[400],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"New",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
);
}

Widget eliteitem() {
return Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Alinea Chicago",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Classical French cooking",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.deepOrange[300],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Spicy",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.red,
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Hot",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 9.5,
color: Colors.white),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.yellow[400],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"New",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 9.5,
),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
);
}
}

This flutter code below - Got this error message - lib/info.dart(31,43): error G44692867: A value of type 'Color?' can't be assigned to a variable of type 'Color' because 'Color?' is nullable and 'Color' isn't. Using flutter version 3.3.6

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'info.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
const MyApp({super.key});

@override
Widget build(BuildContext context) {
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitUp,
]);
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData.light(),
home: const MyPage(),
);
}
}

class MyPage extends StatefulWidget {
const MyPage({super.key});

@override
State<MyPage> createState() => _MyPageState();
}

class _MyPageState extends State<MyPage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text("Restaurant"),
),
body: Padding(
padding: const EdgeInsets.all(5),
child: ListView(
scrollDirection: Axis.vertical,
children: <Widget>[
Hero(
tag: "cakeitem",
child: FittedBox(
child: GestureDetector(
onTap: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => InfoPage()),
);
},
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
itemcake(),
SizedBox(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/cake.jpg'),
),
),
),
],
),
),
),
),
),
FittedBox(
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
juiceitem(),
Container(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/juice.jpg'),
),
),
),
],
),
),
),
FittedBox(
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
pizzaitem(),
SizedBox(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/pizza.jpg'),
),
),
),
],
),
),
),
FittedBox(
child: Card(
// color: Colors.red,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 5,
child: Row(
children: <Widget>[
eliteitem(),
Container(
width: 90,
height: 100,
child: ClipRRect(
borderRadius: BorderRadius.circular(15.0),
child: const Image(
fit: BoxFit.cover,
alignment: Alignment.topRight,
image: AssetImage('assets/elite.jpg'),
),
),
),
],
),
),
),
],
),
),
);
}

Widget itemcake() {
return Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Italian Choco Cake",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Dark belgium chocolate",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.lightBlue[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Cold",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.red[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Fresh",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
);
}

Widget juiceitem() {
return Container(
//width: 150,
child: Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Fresh Mango Juice",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Dark belgium chocolate",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.lightBlue[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Cold",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.red[100],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Fresh",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.yellow[400],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"New",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
),
);
}

Widget pizzaitem() {
return Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Cheese Pizza Italy ",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Double cheese New York Style",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.deepOrange[300],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Spicy",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.yellow[400],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"New",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
);
}

Widget eliteitem() {
return Column(
//mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
const Padding(
padding: EdgeInsets.symmetric(horizontal: 5),
child: Text(
"Alinea Chicago",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 15, color: Colors.red),
),
),
const SizedBox(
height: 5,
),
const Text(
"Classical French cooking",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 9.5,
color: Colors.grey),
),
const SizedBox(
height: 5,
),
Row(
children: <Widget>[
const Icon(
Icons.shopping_cart,
size: 15,
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.deepOrange[300],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Spicy",
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 9.5),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.red,
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"Hot",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 9.5,
color: Colors.white),
),
),
const SizedBox(
width: 5,
),
Container(
width: 35,
decoration: BoxDecoration(
color: Colors.yellow[400],
//color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(10),
),
alignment: Alignment.center,
child: const Text(
"New",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 9.5,
),
),
),
],
),
const SizedBox(
height: 5,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: const <Widget>[
Text(
"Ratings",
style: TextStyle(
fontWeight: FontWeight.normal,
fontSize: 7,
color: Colors.grey),
),
SizedBox(
width: 10,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
Icon(
Icons.star,
size: 10,
color: Colors.orangeAccent,
),
],
),
],
);
}
}

How to resolve this error message in flutter - library_private_types_in_public_api

The line of code it's complaining is  this -

_MyPageState createState() => _MyPageState();



The flutter code lines - class MyPage extends StatefulWidget {
const MyPage({super.key});

@override
_MyPageState createState() => _MyPageState();
}

Select 2 sections of the code and explain to me line by line

1. Distinguish between the following terms. Please write your answers for each:
(a) Objects and classes
(b) Data abstraction and data encapsulation
(c) Inheritance and polymorphism
(d) Dynamic binding and message passing