comboboxentry - glade - ruby - guide
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This document provides instructions on how to create chained (interdependent) combobox selections using Glade and Ruby. It explains how to create a GUI with three comboboxes using Glade where the options in the second and third combobox depend on the selection in the previous combobox. It then provides the Ruby code to populate the comboboxes with data from a database using ActiveRecord and handle the changed signals to update the dependent comboboxes.
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Any other methods you think would be useful in your program.
A Stack class derived from the SinglyLinkedList but with no additional attributes and the usual stack methods -
constructor and createStack (optional) methods,
push which takes a Currency object as parameter and adds it to the top of the stack.
pop which takes no parameter and removes and returns the Currency object from the top of the stack.
peek which takes no parameter and returns a copy of the Currency object at the top of the stack.
printStack method which returns a string signifying the contents of the stack from the top to bottom, tab spaced.
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Ensure that the Stack objects do not allow Linked List functions to be used on them.
A Queue class derived from the SinglyLinkedList but with no additional attributes and the usual queue methods -
constructor and creat.
In this lab, we will write an application to store a deck of cards i.pdf
In this lab, we will write an application to store a deck of cards i.pdfcontact41 In this lab, we will write an application to store a deck of cards in a linked list, and then write
methods to sort and shuffle the deck.
Copy your completed LinkedList class from Lab 4 into the LinkedList.java file below.
Complete all methods of the Card class as described by the Javadoc comments. The class
contains both a suit and a rank. A suit is one of the categories into which the cards of a deck are
divided. The rank is the relative importance of the card within its suit.
Note that the Card constructor must convert any rank and suit letters to uppercase.
For the equals() method, be sure to follow the steps outlined in Lesson 4. How to implement the
compareTo() method is also covered in Lesson 4.
Note that you are not allowed to add any additional methods or member variables to this class or
you will not receive credit for this assignment.
Complete all methods of the CardApp class in the CardApp.java file as described by the Javadoc
comments.
You may add as many methods as you would like to this file, but are not allowed to add any
additional member variables.
The CardApp program must prompt for and allow the user to enter the name of any input file as
shown in the Example output below.
Implement the shuffle() method as specified in the comments for shuffle(). After you have
shuffled the deck of cards, write the result into a file named shuffled.txt.
Implement the sort() method using bubble sort from Lesson 4. First sort by suit in alphabetical
order and then by rank from 2 to A. The pseudocode for bubble sort is as follows:
After you have sorted the deck of cards, write the result to a file named sorted.txt.
The CardApp.java file also contains the main() method of the application. Use Develop mode to
test your CardApp code along with your Card and LinkedList code.
All input and output files must contain a list of cards, with each card stored on its own line. See
the example files cards1.txt and cards2.txt for example file formats.
[[[cards1.txt]]]
2H
3H
4H
5H
6H
7H
8H
9H
10H
JH
[[[cards2.txt]]]
AS
2S
3S
4S
5S
6S
7S
8S
9S
10S
JS
QS
KS
AC
2C
3C
4C
5C
6C
7C
8C
9C
10C
JC
QC
KC
AH
2H
3H
4H
5H
6H
7H
8H
9H
10H
JH
QH
KH
AD
2D
3D
4D
5D
6D
7D
8D
9D
10D
JD
QD
KD
[[[CardApp.java]]]
/**
* CardApp.java
* @author Your name
* @author Partner's name
* CIS 22C, Applied Lab 1
*/
public class CardApp {
private LinkedList list;
/**
* User interface prompts user, reads and writes files.
*/
public static void main(String[] args) {
}
/**
* Default constructor to initialize the deck
*/
public CardApp() {
}
/**
* Inserts a new Card into the deck
* @param card a playing Card
*/
public void addCard(Card card) {
}
/**
* Shuffles cards following this algorithm:
* First swaps first and last card
* Next, swaps every even card with the card 3
* nodes away from that card. Stops when it
* reaches the 3rd to last node
* Then, swaps ALL cards with the card that is
* 2 nodes away from it, starting at the 2nd card
* and stopping stopping at the 3rd to last node
*/
public vo.
Please the following is the currency class of perious one- class Curre.pdf
Please the following is the currency class of perious one- class Curre.pdfadmin463580 Please the following is the currency class of perious one.
class Currency {
protected:
int whole;
int fraction;
virtual std::string get_name() = 0;
public:
Currency() {
whole = 0;
fraction = 0;
}
Currency(double value) {
if (value < 0)
throw "Invalid value";
whole = int(value);
fraction = std::round(100 * (value - whole));
}
Currency(const Currency& curr) {
whole = curr.whole;
fraction = curr.fraction;
}
/* This algorithm gets the whole part or fractional part of the currency
Pre: whole, fraction - integer numbers
Post:
Return: whole or fraction
*/
int get_whole() { return whole; }
int get_fraction() { return fraction; }
/* This algorithm adds an object to the same currency
Pre: object (same currency)
Post:
Return:
*/
void set_whole(int w) {
if (w >= 0)
whole = w;
}
void set_fraction(int f) {
if (f >= 0 && f < 100)
fraction = f;
}
/* This algorithm adds an object to the same currency
Pre: object (same currency)
Post:
Return:
*/
void add(const Currency* curr) {
whole += curr->whole;
fraction += curr->fraction;
if (fraction > 100) {
whole++;
fraction %= 100;
}
}
/* This algorithm subtracts an object to the same currency
Pre: object (same currency)
Post:
Return:
*/
void subtract(const Currency* curr) {
if (!isGreater(*curr))
throw "Invalid Subtraction";
whole -= curr->whole;
if (fraction < curr->fraction) {
fraction = fraction + 100 - curr->fraction;
whole--;
}
else {
fraction -= curr->fraction;
}
}
/* This algorithm compares the an object of the same currency for equality or inequality
Pre: object (same currency)
Post:
Return: whole/fraction
*/
bool isEqual(const Currency& curr) {
return curr.whole == whole && curr.fraction == fraction;
}
/* This algorithm compares the an object of the same currency to determine which is greater or
smaller
Pre: object (same currency)
Post:
Return: true/false
*/
bool isGreater(const Currency& curr) {
if (whole < curr.whole)
return false;
if (whole == curr.whole && fraction < curr.fraction)
return false;
return true;
}
/* This algorithm prints the name and value of the currency object
Pre: value of whole, fraction, and the name
Post: whole, fraction, get_name()
Return:
*/
void print() {
std::cout << whole << "." << fraction << " " << get_name() << std::endl;
}
};
class Krone : public Currency {
protected:
/*
This algorithm gets the name for the Currency.
Pre: name - declared as string and initialized as Krone
Post:
Return: name
*/
std::string name = "Krone";
std::string get_name() {
return name;
}
public:
Krone() : Currency() { }
Krone(double value) : Currency(value) { }
Krone(Krone& curr) : Currency(curr) { }
};
class Soum : public Currency {
protected:
/* This algorithm gets the name for the Currency.
Pre: name - declared as string and initialized as Soum
Post:
Return: name
*/
std::string name = "Soum";
std::string get_name() {
return name;
}
public:
Soum() : Currency() { }
Soum(double value) : Currency(value) { }
Soum(Krone& curr) : Currency(curr) { }
};
A LinkNode structure or class which will have two attrib.
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please note that im a complete beginner.
northwind.mdf.
northwind_log.ldf
OrderDetailsMaintenance.zip
1. Include the two above files in the root of your OrderDetailsMaintenance project.
2. Make sure to mark them as "Content" and "Copy Always" or "Copy if newer" in the properties window of those two files.
3. Run the Scaffold-DbContext command to create a context class as well as a class to encapsulate the Orders objects from the associated table in the mdf file. Make sure to include the parameters for -Tables Customers (only worry about the attributes associated with the text boxes, you don't need to worry about any other rows from the table)
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1. If no order is found, display a message box.
6. Code the exit button
7. Code the Save button to update its attributes and call Update and SaveChanges() on that particular entity.
1. Note: If you close the program, reopen it, and search for the entity you recently updated. You may not see the changes depending on how you setup the mdf file in your project (because it copies a new version to the bin directory each time you run the program). So, if you don't see your changes, don't be alarmed.
============
HERE IS WHAT I HAVE SO FAR
frmCustomerMaintenance.cs
namespace OrderDetailsMaintenance
{
public partial class frmCustomerMaintenance : Form
{
public frmCustomerMaintenance()
{
InitializeComponent();
}
}
}
frmCustomerMaintenance.resx
<root>
<xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
<xsd:element name="root" msdata:IsDataSet="true">
<xsd:complexType>
<xsd:choice maxOccurs="unbounded">
<xsd:element name="metadata">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" />
</xsd:sequence>
<xsd:attribute name="name" use="required" type="xsd:string" />
<xsd:attribute name="type" type="xsd:string" />
<xsd:attribute name="mimetype" type="xsd:string" />
<xsd:attribute ref="xml:space" />
</xsd:complexType>
</xsd:element>
<xsd:element name="assembly">
<xsd:complexType>
<xsd:attribute name="alias" type="xsd:string" />
<xsd:attribute name="name" type="xsd:string" />
</xsd:complexType>
</xsd:element>
<xsd:element name="data">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
<xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
</xsd:sequence>
<xsd:attribute name="name".
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