Can the Product of Two Polynomials Result in a Single Term?

     By assuming that we are talking about polynomials with real coefficients. Suppose that the polynomials are, 

P(x) = axp +  ...  +  bxq
Q(x) = cxr +  ...  +  dxs
Where . . .

List all Modified File Names with Git

     Sometime we need to pull up data from specific time span. Suppose, we need to see all the changed files prior to a deployment. Well, its possible with source control. Git has some commands that can help you with that. Here are some of those..
First command lists every single modified file names from specific date to now..
git whatchanged --since '12/01/2016' --oneline --name-only --pretty=format: | sort | uniq

Second command lists modified file names from prior days..
git log --since="4 day ago" --name-only --pretty=format: | sort -u

Third command lists modified file names from specific interval..
git whatchanged --since '12/01/2016' --until '12/06/2016' --oneline --name-only --pretty=format: | sort | uniq

Best Programmer Joke _ int page[3];

1. Largest Number
      A: If there is a limit to the amount of information that can be stored / represented in the universe and all of it was allocated for a giant integer register, what is the largest number such a register could hold?

     B : -1

2. Recursion
     To understand what recursion is you must first understand recursion. If I teach recursion I first check if you understand recursion. If you do not understand recursion I teach you recursion. However, you can only know someone who understands recursion if you know someone who understands recursion.

Best Programmer Joke _ int page[2];

1. Prime Number 
     A mathematician, a physicist, a civil engineer, and a Software Engineer are asked (after a few beers) to show that all odd numbers greater than 1 are prime.
Mathematician: 3 is prime, 5 is prime, by induction they're all prime.
Physicist: 3 is prime, 5 is prime, 7 is prime, 9 is... experimental error, 11 is prime, 13 is prime -- clearly, they're all prime.
Civil Engineer: 3 is prime, 5 is prime 7 is prime, 9 is prime, 11 is prime -- sure, they're all prime.
Software Engineer: 3 is prime, 5 is prime, 7 is prime, 7 is prime, 7 is prime, 7 is prime, 7 is prime. . .

Enable Finder to Show or Hide Invisible Files and Folders on Mac

     Some people have no clue that there are a huge range of hidden files and folders on their Mac OS X. Apple likes to keep things easy for users by hiding them. This is good for newcomers but keeping files hidden is very tedious for experienced users who is looking to tweak and fine-tune the Mac. So, how do you reveal hidden files on your Mac? Well, we can use our Terminal or third party software. I personally prefer Terminal. Ok then Open the Terminal application in your Utilities folder. At the prompt, enter or paste the following command line then press RETURN.
defaults write AppleShowAllFiles TRUE 
killall Finder

Java Two-Dimensional Array

     The arrays we used so far were uniform series arrays, where all the array elements stay in a simple list, like in a column. This is the structure of one-dimensional array, where all elements fit in one list (life is very simple). But sometimes, you may need to divide the list in a delimited sections.