List for iteration
Friday, May 29th, 2009for x in [1, 2, 3]: print x, # iteration
Archive for May, 2009
Number of options in the dropdown list(Combobox)
Friday, May 29th, 2009<html>
<head>
<script type="text/javascript">
function formAction(){
var x=document.getElementById("mySelect")
alert(x.length)
}
</script>
</head>
<body>
<form>
<select id="mySelect">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<input type="button" onclick="formAction()" value="How many options in the list?">
</form>
</body>
</html>
Traverse a List Using an Iterator
Friday, May 29th, 2009 #include <iostream>
#include <list>
using namespace std;
typedef list<int> IntegerList;
int main()
{
IntegerList intList;
for (int i = 1; i <= 10; ++i)
intList.push_back(i * 2);
for (IntegerList::const_iterator ci = intList.begin(); ci != intList.end(); ++ci)
cout << *ci << " ";
return 0;
}
Right-rotate a sequence in vector
Thursday, May 28th, 2009#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main()
{
vector<int> vectorObject;
vector<int>::iterator p;
int i;
for(i = 0; i <10; i++)
vectorObject.push_back(i);
cout << "Original ordering: ";
for(p=vectorObject.begin(); p<vectorObject.end(); p++)
cout << *p << " ";
cout << endl;
// rotate right two positions using reverse iterators
rotate(vectorObject.rbegin(), vectorObject.rbegin()+2, vectorObject.rend());
cout << "Order after two right rotates: ";
for(p=vectorObject.begin(); p<vectorObject.end(); p++)
cout << *p << " ";
cout << endl;
return 0;
}
JTable.AUTO_RESIZE_LAST_COLUMN
Wednesday, May 27th, 2009import java.awt.BorderLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class MainClass {
public static void main(String args[]) {
String rows[][] = { { "A", "a" }, { "B", "b" }, { "E", "e" } };
String headers[] = { "Upper", "Lower" };
final int modeKey[] = { JTable.AUTO_RESIZE_ALL_COLUMNS, JTable.AUTO_RESIZE_LAST_COLUMN,
JTable.AUTO_RESIZE_NEXT_COLUMN, JTable.AUTO_RESIZE_OFF,
JTable.AUTO_RESIZE_SUBSEQUENT_COLUMNS };
final JTable table = new JTable(rows, headers);
JScrollPane scrollPane = new JScrollPane(table);
String modes[] = { "Resize All Columns", "Resize Last Column", "Resize Next Column",
"Resize Off", "Resize Subsequent Columns" };
final JComboBox resizeModeComboBox = new JComboBox(modes);
int defaultMode = 4;
table.setAutoResizeMode(modeKey[defaultMode]);
resizeModeComboBox.setSelectedIndex(defaultMode);
ItemListener itemListener = new ItemListener() {
public void itemStateChanged(ItemEvent e) {
int index = resizeModeComboBox.getSelectedIndex();
table.setAutoResizeMode(modeKey[index]);
}
};
resizeModeComboBox.addItemListener(itemListener);
JFrame frame = new JFrame("Resizing Table");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(resizeModeComboBox, BorderLayout.NORTH);
frame.add(scrollPane, BorderLayout.CENTER);
frame.setSize(300, 150);
frame.setVisible(true);
}
}
