Simple JavaScript function that calculates your birthday day of week:
function getBirthday(myDay)
{
var daysOfWeek = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]; //array with the days of week
alert("I was born in a: " + daysOfWeek[myDay.getDay()]); //getDay returns the days of week (0-6 day of week. 0 == sunday)
}
var myDay = new Date(1969,10,25);
getBirthday(myDay);
Result:
ArnoldC is an imperative programming language where the basic keywords are replaced with quotes from different Schwarzenegger movies.
IT'S SHOWTIME [statements] YOU HAVE BEEN TERMINATED
TALK TO THE HAND "happy families are all alike"
I'LL BE BACK
IT'S SHOWTIME TALK TO THE HAND "hello world" YOU HAVE BEEN TERMINATED
Check more details about ArnoldC programming language, here: https://github.com/lhartikk/ArnoldC/wiki/ArnoldC
You can search for other existent esoteric programming languages, such as “OOK!” (a programming language derived from Brainfuck and designed to be understood by Orang Utans.), here: http://en.wikipedia.org/wiki/Esoteric_programming_language
Imagine that you need to get more information to be used in a sapscript form and it’s not possible to change the print program.
There is a way to do it by using subroutines of another program.
To do it, you need to modify your sapscript window and add some code as command line:
/: PERFORM test_subroutine IN PROGRAM Z_SAP_SCRIPT_PERFORMS /: USING &EKKO-EBELN& /: CHANGING &TEST1& /: CHANGING &TEST2& /: ENDPERFORM
And create a program with the same name you’ve indicated before (e.g.: Z_SAP_SCRIPT_PERFORMS) to include your subroutines logic. For instance:
* the IN and OUT parameters go inside in_tab structure itcsy and out_tab structure itcsy:
form test_subroutine tables in_tab structure itcsy
out_tab structure itcsy.
* Normal data declaration
data: l_in1 type string,
l_out1 type string.
l_out2 type string.
* Reading parameters from sapscript form:
read table in_tab index 1.
move in_tab-value to l_in1 .
* SELECT SOME DATA into l_out1 e l_out2
* Exporting/Returning the selected data to the sapscript form (TEST1 and TEST2 variables, respectively):
read table out_tab index 1.
out_tab-value = l_out1.
modify out_tab index 1.
read table out_tab index 2.
out_tab-value = l_out2.
modify out_tab index 2.
endform.
That’s it!
Unlike other languages (for e.g. Java) in ABAP programming there isn’t a boolean type.
…But you can simulate it by using the ABAP Language Type-Pool.
DATA is_ok TYPE abap_bool. ... is_ok = abap_true. ... IF is_ok = abap_true. ... ENDIF.
This is the same as:
DATA is_ok TYPE c LENGTH 1. ... is_ok = 'X'. ... IF is_ok IS NOT INITIAL. ... ENDIF.
Go to the ABAP Dictionary transaction (SE11) and search for “abap” Type-Pool.
There you can confirm that the abap_bool type is defined as:
You can confirm the abap_true constant, as well:
Src: Wikipedia
MVC stands for Model View Controller and it’s a modern design pattern used for web applications development.
MVC pattern divides an application in different modules:
Main Advantages:
It’s been used on the most important Web Frameworks, of different technologies nowadays:
Java Spring, PHP Code Igniter, Ruby On Rails or Python Django (this one uses MTV – Model Template View, which is more or less the same thing with a different name. MTV view corresponds to the MVC controller and the MTV template is the MVC view) and many others.
src: wikipedia
By definition, the first two numbers in the Fibonacci sequence are 0 and 1, and each subsequent number is the sum of the previous two.
The following java code, generates the Fibonacci numbers:
public class Fibonacci
{
public static void main(String[] args)
{
// printing the fibonacci sequence from 0 to 12
for(int i = 0; i <= 12; i++)
{
System.out.print(fibo(i) + ", ");
}
}
public static int fibo(int n)
{
int result = 0;
if(n >= 0)
{
int [] nums = new int[n+1];
for(int i = 0; i < n+1; i++)
{
if(i == 0)
{
result = 0;
}else if(i == 1)
{
result = 1;
}else{
//sum of the previous two elements
result = nums[i - 2] + nums[i - 1];
}
nums[i] = result;
}
}else{
// only numbers greater or equal to zero are allowed
return -1;
}
return result;
}
}
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144
The interesting thing, is that Fibonacci sequence is a common job technical interview exercise… 😉
source: http://www.java-forums.org
A process can contain multiple threads.
When you double-click on an application (e.g. Power Point) icon, the OS starts a new process and executes the main thread of that app, which can start other threads.
An advantage of multithreading is that an application can execute different tasks at the same time.
The biggest difference between a process and a thread, is that each process has it’s own address space, while threads (of the same process) run in a shared memory space. This means that it’s possible to share data amongst threads (e.g. reading and write to the same variables) which should be carefully done, using synchronization on the shared data.
There are different ways of how to start a Thread in Java.
Example 1 – Extending the Thread class:
package threadTests;
class ThreadTest1Runner extends Thread
{
public void run()
{
for(int i = 1; i <= 5; i++)
{
System.out.println("Hello " + i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
public class ThreadTest1
{
public static void main(String[] args)
{
System.out.println("Main Thread Started...");
ThreadTest1Runner t1 = new ThreadTest1Runner();
t1.start();
ThreadTest1Runner t2 = new ThreadTest1Runner();
t2.start();
System.out.println("Main Thread Ended...");
}
}
Output:
Main Thread Started... Hello 1 Main Thread Ended... Hello 1 Hello 2 Hello 2 Hello 3 Hello 3 Hello 4 Hello 4 Hello 5 Hello 5
Example 2 – Implementing the Runnable interface:
package threadTests;
class ThreadTest2Runner implements Runnable
{
public void run()
{
for(int i = 1; i <= 5; i++)
{
System.out.println("Hello " + i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
public class ThreadTest2
{
public static void main(String[] args)
{
System.out.println("Main Thread Started...");
Thread t1 = new Thread(new ThreadTest2Runner());
Thread t2 = new Thread(new ThreadTest2Runner());
t1.start();
t2.start();
System.out.println("Main Thread Ended...");
}
}
Output:
Main Thread Started... Hello 1 Main Thread Ended... Hello 1 Hello 2 Hello 2 Hello 3 Hello 3 Hello 4 Hello 4 Hello 5 Hello 5
Example 3 – Implementing the Runnable interface (fastway):
package threadTests;
public class ThreadTest3
{
public static void main(String[] args)
{
System.out.println("Main Thread Started...");
Thread t1 = new Thread(new Runnable()
{
public void run() {
for(int i = 1; i <= 5; i++)
{
System.out.println("Hello " + i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
});
t1.start();
System.out.println("Main Thread Ended...");
}
}
Output:
Main Thread Started... Main Thread Ended... Hello 1 Hello 2 Hello 3 Hello 4 Hello 5
If you’re a programmer and you want to learn a new programming language, then I think the following tables can help you making a decision.
Are you looking for a consistent technology, used along the past 25 years?
Big Picture: 10 best programming languages in the last 25 years
Or do you preffer to start learning the one that stood out last year?
Highest Programming Language Ratings in a year
Source: http://www.tiobe.com
And you?
Do you agree with these statistics?
What is your preferred programming language?
Java Foreach syntax example:
for(Integer i : list){
//some code here
}
For some people is better to read than something like:
for(int i=0; i < list.size(); ++i){
//some code here
}
Follows an example of a foreach, looping over an HashMap:
import java.util.HashMap;
public class HashesExample
{
public static void main(String[] args)
{
//Instantiate numOfLegsList Hash
HashMap numOfLegsList = new HashMap();
//Adding elements to Hash
numOfLegsList.put("Dog", "4 legs");
numOfLegsList.put("Fish", "No legs");
numOfLegsList.put("Chicken", "2 legs");
numOfLegsList.put("Snake", "No legs");
numOfLegsList.put("Lion", "4 legs");
//Java For Each loop (over numOfLegsList elements)
//Syntax: for(Element e: Collection):{//do something here}
for(String s: numOfLegsList.keySet()){
System.out.println(s + ": " + numOfLegsList.get(s));
}
}
}
Output:
Snake: No legs
Chicken: 2 legs
Dog: 4 legs
Lion: 4 legs
Fish: No legs
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i4MK 
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