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What is the difference between dynamic and static polymorphism in Java?
...nt a,int b,int c){System.out.println(a+b+c);}
public static void main(String args[]) {
Calculation obj=new Calculation();
obj.sum(10,10,10); // 30
obj.sum(20,20); //40
}
}
overriding example:
class Animal {
public void move(){
System.out.println("Anim...
Pythonic way to print list items
...
To add format(), replace the str(x) with a format string: print " ".join(["{:02d}".format(x) for x in l])
– ChrisFreeman
Apr 26 '16 at 6:34
add a comm...
How can I convert JSON to CSV?
... is as easy as using two commands!
pandas.read_json()
To convert a JSON string to a pandas object (either a series or dataframe). Then, assuming the results were stored as df:
df.to_csv()
Which can either return a string or write directly to a csv-file.
Based on the verbosity of previous ans...
Difference between SelectedItem, SelectedValue and SelectedValuePath
.../>
public class Category
{
public int ID { get; set; }
public string Name { get; set; }
}
public class Product
{
public int CategoryID { get; set; }
}
It's a little confusing initially, but hopefully this makes it a bit clearer... :)
Chris
...
sendmail: how to configure sendmail on ubuntu? [closed]
...
In case anyone else is confused, the strings inside the sendmail.mc file need to be in the form BACKTICK + your text + SINGLE QUOTE.
– Thomas
Apr 2 '16 at 1:43
...
What is the difference between a weak reference and an unowned reference?
...d from the docs.
Example of the weak keyword:
class Person {
let name: String
init(name: String) { self.name = name }
var apartment: Apartment?
}
class Apartment {
let number: Int
init(number: Int) { self.number = number }
weak var tenant: Person?
}
And now, for some ASCII...
What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
...() {
System.out.println("Hi!");
}
public static void main(String[] args) throws Exception {
Class clazz = Class.forName("test.Demo");
Demo demo = (Demo) clazz.newInstance();
}
}
As explained in its javadoc, calling Class.forName(String) returns the Class object...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
... new ArrayList<UUID>();
this.uuidCandidates.add(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
}
}
public BluetoothSocketWrapper connect() throws IOException {
boolean success = false;
while (selectSocket()) {
adapter.cancelDi...
get the latest fragment in backstack
...ackStackEntry backEntry = getFragmentManager().getBackStackEntryAt(index);
String tag = backEntry.getName();
Fragment fragment = getFragmentManager().findFragmentByTag(tag);
You need to make sure that you added the fragment to the backstack like this:
fragmentTransaction.addToBackStack(tag);
...
How to indicate param is optional using inline JSDoc?
...as well
/**
* @param {MyClass|undefined}
* @param {MyClass=}
* @param {String} [accessLevel="author"] The user accessLevel is optional.
* @param {String} [accessLevel] The user accessLevel is optional.
*/
Just slightly more visually appealing than function test(/**String=*/arg) {}
...