Silence

It has been a long while since I updated my blog.. I guess tweeting became an quick way to express and share my thoughts.. although my tweets are mostly non technical :)

If interested, follow me at @modsaid

Comments

Post a Comment

Popular posts from this blog

Success of Startups

Entrepreneurship has become one of the one of the most interesting topic in the business side in any country in the world. While it is digging its way in the middle east, there is some sort of confusion and a lot of aspects related to that topic. A Startup can act and advance to tackle business opportunities in a way that competes with large enterprises. and most of the times, they need to be supported by Investors to back them up. One of the things that started to really bother me in the culture is the definition of success of a startup. No one denies that a decent revenue generating startup is a successful one. However, some people believe that just raising an investment is a success.... umm, debatable. I believe we can make some kind of analogy with some entities that showed up in the past decade like biznas and skybiz (I'm sure some of you will remember those names).   they used an invalid scheme summarized as: People can register and join the network for a fee (as an i...
Read more

Prime Numbers Generator

Image
did u know that 34136029 is a prime number?!! well.. that's what i recently realized :) I thought of writing a piece of code for that purpose.. wondering how far i can get. The idea of the code is simple We know that 2 and 3 are prime numbers the code checks every following odd numbers to be prime or not. To verify a prime number, the number divisibility by the prime numbers generated so far is checked. (29 is a prime number.. because it id not divisible by 2, 3, 5, 7, 11, 13, 17, 19 nor 23) We only need to verify divisibility against the numbers smaller than or equal to the root of the number in hand. (We needn't check the divisibility of 33 with 11, as we already must have found out it is divisible by 3).. I did not want to go with the mathematical root evaluation as i am not sure about its load. I used bits handling instead. the root of a number uses at most half of the number of bits that the original number uses. i only made a naive java implementation so far. downloa...
Read more

Converting a batch of files of csv format to xls or xlsx

While working with data, we tend to deal a lot with CSV files. It is more efficient and trivial to manipulate csv data either through command line tools or through programming languages like ruby. However, occasionally we need to convert files to MS Excel format before sending them to 3rd party. Gnumeric is a wonderful opensource spreadsheet program.  It contains a command line convertion tool called ssconvert that can be used to perform direct conversion among lots of supported formats easily from the command line. For example, conversion from csv to xlsx can be done via ssconvert  file.csv file.xlsx OR ssconvert  file.csv --export-type=Gnumeric_Excel:xlsx It can be installed in ubuntu via apt-get install gnumeric In order to convert lots of files, I wrote a simple bash script that will process all csv files in the current directory and generate the corresponding xlsx files.  The script came pretty handy in data preparation. I believe i can be h...
Read more