Uploaded July 2025 | Updated September 2026, 1 week ago
#coding #programming #computerscience
Hexadecimal is a concise way to represent binary data. It's used in memory addresses, color codes, MAC addresses, and UUIDs.
#coding #programming #computerscience
Hexadecimal is a concise way to represent binary data. It's used in memory addresses, color codes, MAC addresses, and UUIDs.



![Selection in Pandas is easy! ๐ฏ
#coding #python #programming
Selection in Pandas means pulling out specific data from a Series or DataFrame.
import pandas as pd
df = pd.read_csv(data.csv, index_col=Name)
pokemon = input(Enter a Pokemon name: )
try:
print(df.loc[pokemon])
except KeyError:
print(f{pokemon} not found) Selection in Pandas is easy! ๐ฏ](https://i.ytimg.com/vi/aoNRYtVEhAM/mqdefault.jpg)

![Learn INTERFACES in 6 minutes! ๐
#java #javatutorial #javacourse
public class Main {
public static void main(String[] args) {
// Interface = A blueprint for a class that specifies a set of abstract methods
// that implementing classes MUST define.
// Supports multiple inheritance-like behavior.
Rabbit rabbit = new Rabbit();
Hawk hawk = new Hawk();
Fish fish = new Fish();
rabbit.flee();
hawk.hunt();
fish.flee();
fish.hunt();
}
}
public interface Prey {
void flee();
}
public interface Predator {
void hunt();
}
public class Rabbit implements Prey{
@Override
public void flee(){
System.out.println(*The rabbit is running away*);
}
}
public class Hawk implements Predator{
@Override
public void hunt(){
System.out.println(*The hawk is hunting*);
}
}
public class Fish implements Prey, Predator{
@Override
public void flee(){
System.out.println(*The fish is swimming away*);
}
@Override
public void hunt(){
System.out.println(*The fish is hunting*);
}
} Learn INTERFACES in 6 minutes! ๐](https://i.ytimg.com/vi/c2sTQk9opO8/mqdefault.jpg)

![Learn Java ARRAY OF OBJECTS in 5 minutes! ๐๏ธ
#java #javatutorial #javacourse
public class Main {
public static void main(String[] args) {
Car[] cars = {new Car(Mustang, Red),
new Car(Corvette, Blue),
new Car(Charger, Yellow)};
for(Car car : cars){
car.color = black;
}
for(Car car : cars){
car.drive();
}
}
}
public class Car {
String model;
String color;
Car(String model, String color){
this.model = model;
this.color = color;
}
void drive(){
System.out.println(You drive the + this.color + + this.model);
}
} Learn Java ARRAY OF OBJECTS in 5 minutes! ๐๏ธ](https://i.ytimg.com/vi/cMJeCs0n6BY/mqdefault.jpg)

![Write files using C programming in 5 minutes! โ๏ธ
#coding #programming #cprogramming
// WRITE A FILE
FILE *pFile = fopen(output.txt, w);
char text[] = BOOTY BOOTY BOOTYnROCKIN EVERYWHERE!;
if(pFile NULL){
printf(Error opening filen);
return 1;
}
fprintf(pFile, %s, text);
printf(File was written successfully!n);
fclose(pFile);
return 0; Write files using C programming in 5 minutes! โ๏ธ](https://i.ytimg.com/vi/d29sVpbM0kc/mqdefault.jpg)
