Christos Sotiriou (Page 2)

A few thoughts on Parallelism

It’s been a while. I am very sure many people experienced connectivity issues to my server. I believe these issues have been resolved. While searching in my old archives, I stumbled across an essay that I had written as a small part of a bigger exam in the

mobile-development

AFNetworking + PromiseKit

AFNetworking is the de-facto standard for implementing a robust and scalable network infrastructure in your iOS or OS X application. I personally have used it for the implementation of many professional projects that I have been involved in. And lately I have stumbled across an delightful Framework, PromiseKit, a Promises

News

R.I.P iGreekNews & iMe

I hate good-byes but this one is long overdue. Yes, I have decided to let iGreekNews and iMe die, and withdraw it from the App Store. It has been a long and exciting journey, however, one must know when to say good-bye and take down one of the most successful

javascript

Country border highlighting with Leaflet.js

Not too long ago I finished a project on Big Data for the University. One part of this huge project was the implementation of a dynamics map that would be responsive to mouse hover and mouse click. When the mouse would hover over a country, the whole country borders would

Blog

Working on Big Data...

Doing a project on Big Data. It’s the first time that I realize that data visualization is not a gimmick but actually helps one to process data with naked eye just with a glimpse. This screenshot is taken using MATLAB. X axis shows the index of a venue that

Blog

Monsters in our dreams

Every dream has a monster, visible or not. I’m talking about “daydreaming”, imagining one’s self in another situation, in a happy place, position, circumstance… Every such dream starts with having lots of imagination, and sometimes, false and stupid hopes. But it’s

News

Code updates

I have taken some time to update my GitHub repository, who has been lonely as of date. While developing code for my projects at the university, I came to realise that much of this code could prove useful to others. CSPopViewService First thing I did was to update the pop

opengl

Ogre + Bullet - Beginner's Tutorial

Lately, I have been testing my skills with Ogre3D, a 3D rendering engine written in C++, and Bullet physics, which is used in many commercial games to give realistic movement and feel to movable objects in the world. I was amazed to see that there is no comprehensive tutorial on

Blog

Studies...

I always wanted to study abroad. When I started my Bachelor’s degree, I said that my MSc would be abroad. Never knew why I said that, I didn’t even know if I would attend a Master’s course. I never thought about it again, until

News

iGreekNews updates for iPhone and iPad

After a long time, iGreekNews and iGreekNews HD for iOS have finally been updated. And it was about time. Some of the changes are welcome, and have been requested many times by users. — Renewal of the source websites. Removed many sites that do not work, and added new ones. — Bug

Blog

Idea Crisis (Reposting)

A while ago in my old blog I had posted in Greek an article, that had many views. Lately, I have been requested to re-post the article. The article is about the upcoming economic crisis, and it dates back in 2010-11-07. It’s in greek, and the original title

Blog

JSONkit and Exception handling

Having troubles with JSONKit and nil and null exceptions in occasions you can’t understand? This thing happened to me when trying to use something like “self.textview.text = [dictionary valueForKey:@”someKey”];” and I couldn’t understand why I kept receiving extensions about mismatch

News

RELEASE Michanikoi

I am proud to announce that a project for which I have developed the iOS application (Michanikoi) is now released. With this application you can: — Calculate the cost of the energy audit for houses situated in Greece. — Answer all your questions regarding energy audits and general questions regarding

Blog

Thoughts on Programing Paradigms

It’s been a while since I have posted here. That doesn’t mean I am inactive. iGreekNews needed an update, and my full day job is also taking me too much time. I have no regrets, however. This amount of work comes with a great amount of

software engineering

Xcode and iOS 5: Bringing back backtrace symbols

If you have downloaded iOS 5, you will have aundoubtedly noticed that there is something important missing about the new SDK: the stack trace printed from each exception. You now see hexadecimal representations of symbols where you previewsly saw full human-readable symbols. Apple is undergoing changes in the low-level foundation

Blog

Small Update

Well, it’s a sad day today. Remember about project Unicorn? It was a project I started a few months ago before I joined the army. I stumbled upon a problem no one could help me, so I abandoned the project, and I recreated it a few months ago,

Blog

taxiplon a Global Mobile Awards Finalist

I am happy to announce that a project I am taking part to, taxiplon is now a Global Mobile Awards 2012 nominee in the category of Best Mobile Innovation for Automotive, Transport or Utilities. You can read all about the competition here: In there you can find

Blog

GCD, NSOperation and Core Data/ Files on disk

Core data is fast, even on iOS, where handheld devices lack in speed when compared to desktop computers. However, there will be times where you will be required to do some heavy reading, wether that will be plain files from disk or information stored in Core Data. In my case,

macos

Fedora 16 on Macbook Impressions

Fedora 15 was a mixed bag of impressions for me, but overrall, it was a nice update… or should I say, a nice revamp? Fedora 15 took a giant leap backwards by depriving the entire OS of many features that its predecessors had, in favor of a more user

Blog

Dark Days

Well, the title says it all. A year ago, I had written an article, called “Η κρίση των ιδεών”, written in Greek. It translates to english as “The Crisis of idea(l)s”. Ι had epxressed my concerns about what the oncoming economic crisis in Greece,

Blog

Hello World!

Welcome in the new blog component, which will reside in the main site from now on. Perhaps this will save time and confusion to users that were sometime lost when navigating through the site and its different sections. Let me tell you about something I encountered when reading about my

News

taxiplon

Lately, I have been involved in a project called taxiplon. taxiplon stands as a platform for taxi traffic, aimed at both taxi drivers and passengers. For taxi drivers, it provides them with an interface for acquiring all sorts of useful information about their shift, such as ship and airplane arrival

News

iGreekNews HD 1.6.1 and iGreekNews 1.9.1 Released

It’s been a busy week for Oramind, mainly since iOS 5.0 broke many features of iGreekNews. So after the initial bug fix update for iGreekNews HD and iGreekNews a number of new issues came up. The latest versions of iGreekNews (1.6.1 for the iPad and

News

iGreekNews HD 1.5.4 fixes iOS 5 problems, iGreekNews update coming soon

iGreekNews HD 1.5.4. came out yesterday, and fixes all problems that iOS 5 users had. It also fixes facebook and twitter compatibility and adds minor enhancements to the fluidity of the UI. It is highly recommended for all users to update to the latest version. Also, iGreekNews for

News

iGreekNews HD Problems with iOS 5: Soon to be fixed

After updating to version 1.5.3, users if iGreekNews HD with iOS 5 installed are unable to view the front pages, and have experienced crashes, lockups, screens that wouldn’t do away when pressing the back button, and many other problems. We are aware of all these issues,