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  • How can I downgrade my version of Evolution to the one used in Ubuntu 11.04?

    - by Johnny
    I just upgraded, and like a few other users I had issues with Evolution email after the upgrade from 11.04 to 11.10 and then 12.04. I know to make backups, but in this case I stupidly didn't think that the program would be changed (Firefox wasn't modified at all), and so I failed to make a backup. Three days later I am still having issues, and recovering the emails is proving to be difficult with only partial recovery or it not working at all. My question is, can I add in some source to use the 11.04 version of Evolution, since that version was working fine and would know what to do with the current files (Inbox, Outbox, etc.) I also noticed that Evolution's restore feature said it changed the way emails are handled, so it seems like a downgrade could put everything back to normal. Worst case scenario, I start over, but I wanted to try everything first. Thanks in advance! I'm also open to any suggestions for restoring the old emails files to the current version of Evolution.

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  • Need instructions how to create wpa_supplicant.conf and add fast_reauth=0 to it // WPA 2 Enterprise & frequent wlan disconnects

    - by nutty about natty
    Like many other natty users on a university / academic network, I'm experiencing annoying frequent disconnects / hangs / delays. See, for instance: https://bugs.launchpad.net/ubuntu/+source/wpasupplicant/+bug/429370 I would like to learn how to add fast_reauth=0 to the wpa_supplicant.conf file. This file, it seems, does not exit by default, and needs to be manually created first: http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=blob_plain;f=wpa_supplicant/README [quote] You will need to make a configuration file, e.g., /etc/wpa_supplicant.conf, with network configuration for the networks you are going to use. [unquote] Further, I installed wpa_gui which probably needs to be launched with parameters, else it's pretty blank... What I'm hoping for is this: That creating a wpa_supplicant.conf file with fast_reauth=0 in it, saving it to the relevant path, will work and make my uni wireless (more or even completely) stable. I read mixed reviews about wicd (as an alternative to the network manager). Also note that on my basic wlan at home (with bog-standard wpa encryption) the connection is stable. Thanks!

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  • Game Code Design for Rendering

    - by kuroutadori
    I first created a game on the iPhone and I'm now porting it to Android. I wrote most of the code in C++, but when it came to porting it wasn't so easy. The Android way is to have two threads, one for rendering and one for updating. This due to some devices blocking when updating the hardware. My problem is that I am coming from the iPhone. When I transition, say from the Menu to the Game, I would stop the Animation (Rendering) and load up the next Manager (the Menu has a Manager and so has the Game). I could implement the same thing on Android, but I have noticed on game ports like Quake, don't do this - as far as I can tell. I have learnt that I cannot just dynamically add another Renderer class the the tree because I will probably get a dequeuing buffer error - which I believe to be a problem with the OpenGL ES side. So how is it done?

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  • Approaching events #mstc11 #ppws #sqlbits

    - by Marco Russo (SQLBI)
    The spring season is always full of events and I’m just preparing for a number of them. First of all, we are getting very good interest for the PowerPivot Workshop in Copenhagen on 21-22 March 2011. Tomorrow (Friday March 4) will be the last day to take advantage of the Early Bird rate for this date. We will also participate to an evening meeting of local user groups on March 21 in Copenhagen, more news about this in the next few days. Other scheduled dates are in Dublin (28-29 March 2011) and in...(read more)

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  • A Trio of Presentations: Little Wonders, StyleCop, and LINQ/Lambdas

    - by James Michael Hare
    This week is a busy week for me.  First of all I’m giving another presentation on a LINQ/Lambda primer for the rest of the developers in my company.  Of Lambdas and LINQ View more presentations from BlackRabbitCoder Then this Saturday the 25th of June I’ll be reprising my Little Wonders presentation for the Kansas City Developers Camp.  If you are in the area I highly recommend attending and seeing the other great presentations as well.  Their link is here. Little Wonders View more presentations from BlackRabbitCoder Finally, this Monday the 27th I’ll be speaking at the Saint Louis .NET Users group, giving my Automating Code Standards Using StyleCop and FxCop presentation.  If you are in the Saint Louis area stop by!  There’s two other simultaneous presentations as well if they’re more suited to your interests.  The link for the SLDNUG is here. Automating C# Coding Standards using StyleCop and FxCop View more presentations from BlackRabbitCoder Tweet Technorati Tags: C#,.NET,LINQ,Lambda,StyleCop,FxCop,Little Wonders

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  • Why do I need to relaunch dkpg-reconfigure keyboard-configuration after every startup?

    - by yves Baumes
    I've switched recently to an UK keyboard, from a FR keyboard. It is an usb keyboard, and first I plugged it in, I had to launch dpkg-reconfigure keyboard-configuration in order to request the correct layout (ie: uk). But after every reboot of the machine, the laytout comes back to the FR layout. How can I make the modification persisting? I am using Ubuntu, running the Stump Window Manager. And here is the /etc/default/keyboard at any time (that is right after startup, and before and after I run the dpkg-reconfigure tool) XKBMODEL="hhk" XKBLAYOUT="gb" XKBVARIANT="" XKBOPTIONS="terminate:ctrl_alt_bksp"

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  • Do you know what is a DevOps Project?

    - by Gopinath
    Yesterday I wrote about OpenStack project, an open source cloud computing stack that lets you build Cloud Computing environments. While reading more on this topic I stumbled about a new type of projects called DevOps projects.  OpenStack is all set to become the first DevOps project, reports Forbes …the way OpenStack is applying the open source model to creating cloud infrastructure, the open source model is on the verge of being extended so that the collaboration and design process will include software, hardware, and networking in the data center as well as operational processes. In modern development, the idea of designing software, data center, and operations using one integrated team is called DevOps.

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  • Thunderbird adds ***UNCHECKED*** to subjects of GPG messages

    - by Roman Geber
    Thunderbird seems to consider it a great idea to add the string UNCHECKED in front of the subject of GPG encrypted messages. Well, its not a good idea but rather annoying. At first I thought it would be a mailserver thing, so I checked. No trace of it, anywhere. Same goes for the raw message source. When I look at it the subject appears untouched, therefore I assume its a Thunderbird thing. Does anyone know an option to turn this ill behavior off? Thanks a lot in advance! cu Roman

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  • Can't install Spotify Linux preview

    - by Wut
    I'm having trouble installing the Spotify Linux preview. I'm kinda new to Ubuntu so I'm not sure if I did something wrong. First, in the terminal, I ran this: sudo gedit /etc/apt/sources.list At the bottom, I added this: deb http://repository.spotify.com stable non-free # deb-src http://repository.spotify.com stable non-free Then I ran this: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4E9CFF4E Next: sudo apt-get update It seemed to have gone well, as there were no error messages. So next, I ran this: sudo apt-get install spotify-client-qt But when I did, I got this: You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: spotify-client-qt : Depends: spotify-client but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). Any ideas?

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  • Wammu, Samsung J700 error GetNextMemory code: 56

    - by Tamas
    I have got a (old) Samsung J700i. When connecting with a USB cabel to Wammu first the access was denied. Now it is oké... However, when I try to get info out from the phone... I get error message: Error whlie communicating with phone Desciption: Internal phone error. Function: GetNextMemory Error code: 56 I am using Ubuntu 12.04 and Wammu 0.36 Running on Python 2.7.3 Using wxPython 2.8.12.1 Using python-gammu 1.31.0 and Gammu 1.31.0 How may I access data on the phone? Thanks, Tamas

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  • Using Substring() in XML FLOWR Queries

    - by Jonathan Kehayias
    Tonight I was monitoring the #sqlhelp hashtag on Twitter for a response to a question I asked when Randy Knight ( Twitter ) asked a question about using SUBSTRING in FLOWR statements with XML. #sqlhelp Is there a way to do a SQL Type "LIKE" or "SUBSTRING" in the where clause of FLWOR statement? Need to evaluate just first n chars. By the time I posted a response, Randy had figured out how to use the contains() function to solve his problem, but I am going to blog this because...(read more)

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  • Use your own domain email and tired of SPAM? SPAMfighter FTW

    - by Dave Campbell
    I wouldn't post this if I hadn't tried it... and I paid for it myself, so don't anybody be thinking I'm reviewing something someone sent me! Long ago and far away I got very tired of local ISPs and 2nd phone lines and took the plunge and got hooked up to cable... yeah I know the 2nd phone line concept may be hard for everyone to understand, but that's how it was in 'the old days'. To avoid having to change email addresses all the time, I decided to buy a domain name, get minimal hosting, and use that for all email into the house. That way if I changed providers, all the email addresses wouldn't have to change. Of course, about a dozen domains later, I have LOTS of pop email addresses and even an exchange address to my client's server... times have changed. What also has changed is the fact that we get SPAM... 'back in the day' when I was a beta tester for the first ISP in Phoenix, someone tried sending an ad to all of us, and what he got in return for his trouble was a bunch of core dumps that locked up his email... if you don't know what a core dump is, ask your grandfather. But in today's world, we're all much more civilized than that, and as with many things, the criminals seem to have much more rights than we do, so we get inundated with email offering all sorts of wild schemes that you'd have to be brain-dead to accept, but yet... if people weren't accepting them, they'd stop sending them. I keep hoping that survival of the smartest would weed out the mental midgets that respond and then the jumk email stop, but that hasn't happened yet anymore than finding high-quality hearing aids at the checkout line of Safeway because of all the dimwits playing music too loud inside their car... but that's another whole topic and I digress. So what's the solution for all the spam? And I mean *all*... on that old personal email address, I am now getting over 150 spam messages a day! Yes I know that's why God invented the delete key, but I took it on as a challenge, and it's a matter of principle... why should I switch email addresses, or convert from [email protected] to something else, or have all my email filtered through some service just because some A-Hole somewhere has a site up trying to phish Ma & Pa Kettle (ask your grandfather about that too) out of their retirement money? Well... I got an email from my cousin the other day while I was writing yet another email rule, and there was a banner on the bottom of his email that said he was protected by SPAMfighter. SPAMfighter huh.... so I took a look at their site, and found yet one more of the supposed tools to help us. But... I read that they're a Microsoft Gold Partner... and that doesn't come lightly... so I took a gamble and here's what I found: I installed it, and had to do a couple things: 1) SPAMfighter stuffed the SPAMfighter folder into my client's exchange address... I deleted it, made a new SPAMfighter folder where I wanted it to go, then in the SPAMfighter Clients settings for Outlook, I told it to put all spam there. 2) It didn't seem to be doing anything. There's a ribbon button that you can select "Block", and I did that, wondering if I was 'training' it, but it wasn't picking up duplicates 3) I sent email to support, and wrote a post on the forum (not to self: reply to that post). By the time the folks from the home office responded, it was the next day, and first up, SPAMfighter knocked down everything that came through when Outlook opend... two thumbs up! I disabled my 'garbage collection' rule from Outlook, and told Outlook not to use the junk folder thinking it was interfering. 4) Day 2 seemed to go about like Day 1... but I hung in there. 5) Day 3 is now a whole new day... I had left Outlook open and hadn't looked at the PC since sometime late yesterday afternoon, and when I looked this morning, *every bit* of spam was in the SPAMfighter folder!! I'm a new paying customer After watching SPAMfighter work this morning, I've purchased a 1-year license, and I now can sit and watch as emails come in and disappear from my inbox into the SPAMfighter folder. No more continual tweaking of the rules. I've got SPAMfighter set to 'Very Hard' filtering... personally I'd rather pull the few real emails out of the SPAMfighter folder than pull spam out of the real folders. Yes this is simply another way of using the delete key, but you know what? ... it feels good :) Here's a screenshot of the stats after just about 48 hours of being onboard: Note that all the ones blocked by me were during Day 1 and 2... I've blocked none today, and everything is blocked. Stay in the 'Light!

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  • Worst practices in C++, common mistakes ...

    - by Felix Dombek
    After reading this famous rant by Linus Torvalds, I wondered what actually are all the bad things programmers might do in C++. I'm explicitly not referring to typography errors or bad program flow as treated in this question and answers, but to more high-level errors which are not detected by the compiler and do not result in obvious bugs at first run, complete design errors, things which are improbable in C but are likely to be done by newcomers who don't understand the full implications of their code. I also welcome answers pointing out a huge performance decrease where it would not usually be expected. An example of what one of my professors once told me: You have used somewhat too many instances of unneeded inheritance and virtuality. Inheritance makes a design much more complicated (and inefficient because of the RTTI (run-time type inference) subsystem), and it should therefore only be used where it makes sense, e.g. for the actions in the parse table." [I wrote an LR(1) parser generator.] "Because you make intensive use of templates, you practically don't need inheritance."

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  • Do CDNs work with POST operations?

    - by iddqd
    I'm using a CDN (Level3) for the first time and I'm a bit confused. I'm accessing dynamic URLs such as http://cdn.mysite.com?getItem=1234 that return text data. Do CDNs work with HTTP POST operations? When i issue a HTTP POST operation, my "real" server receives this request every time, so I'm wondering if the CDN has a problem with POST operations. If i use HTTP GET it seems to work, i call the URL once (from my application), i can see my server receiving the request. If i call it a second time, the CDN delivers it directly, my server doesn't get anything. However if i open same the link manually from a second browser tab, my server is asked to deliver again, shouldn't it be cached by now? Many thanks.

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  • Reminder: GlassFish 3.1 Clustering Webinar Today!

    - by alexismp
    Quick reminder for those of you that missed the GlassFish Clustering Webinar from March, we have a new session today (June 28th, 2011). The session is planned at 10:00 a.m. PT / 1:00 p.m. ET / 19.00 CT and you'll need to register first. John Clingan, Principal Product Manager for GlassFish, will walk you through the various clustering features introduced and enhanced in version 3.1. This includes the SSH-based provisioning of clusters (never log in to any machine again), the centralized administration, High Availability and smart failover, load-balancer, Domain Admin Server (DAS) performance improvements, cluster deployments and more. Other than learning about these new product features this is also your chance to ask questions to John and other GlassFish team members. See you there!

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  • How would I balance a multiplayer competitive game

    - by Simon
    I'm looking at my first foray into developing a game, and would love to know whether you guys have any thoughts on game balancing on limited multiplayer games. The game I have in mind involves a neutral player that has to achieve a goal, with two supporting "deity" players who are one of 'good' and 'evil' - One of the deity players would try to help the player achieve their goal, while the other would try to thwart them. Any thoughts or pointers on how I can ensure the deities are balanced? If you want me to expand, I will, just didn't want to give away too much of the game play before I finish it.

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  • Extra Life 2012 - The Final Plea ... Until the Next One

    - by Chris Gardner
    I thought I'd share the email stream that my friends and family get about the event.So, here we are again. We scream closer to the event, and the goal is not met.I was approached by the ghost of feral platypii past last night. Well, approached is putting it lightly. I was mugged by the ghost of platypii past last night. He reminded me, in no uncertain terms that I have only reached the midway point of my fundraising goal. He then reminded me, in even less uncertain terms, that we are one week away from the event. There were other reminders past that, but this is a family broadcast. *shudder*Now, let us be serious for a moment. The event organizers claim a personal story helps to tug heart strings, whatever those are...I've been to Children's Hospital of Birmingham. I had to take Spawn, the Latter, there to verify she was not going to die. Instead, she's just a ticking time bomb for the next generation, but I digress.While I was there, I saw things. I saw child after child after child waiting for their appointment. I saw the most sublime displays of children's art juxtaposed with hospital sterilization that I could ever possibly imagine. I saw and heard things that only occur in the nightmares of parents, and I was only in the waiting rooms.But I will never forget the 10-ish year old girl that came in for her regularly scheduled dialysis appointment ... as if it was just another Friday afternoon. She had her school books, a little snack, a book to read for pleasure, and a DVD, in case she finished her homework a little early. You know, everything you'd need for an afternoon hooked up to a huge medical machine that going to clean out all the toxins in your blood. As she entered the secured area, she warmly greeted all the doctors and nurses with the same familiarity that I would greet the staff of my favorite coffee shop as I stopped in for my morning cup of coffee.I don't know the status of that little girl. I don't know if she's healthy or, quite frankly, alive. I don't even know her name, as I only heard it in passing for the 37 seconds our paths crossed. However, I do remember being incredibly moved and touched by her upbeat attitude about the situations, and I hope that my efforts last two Octobers got her, in some way, a little comfort.And, if she is still with us, I hope we can get her a little more.=== PREVIOUS MESSAGE FOLLOWS ===Greetings (Again),If you are receiving this updated message, then you didn't feel generous the first time. Now, I tried to be nice the first time. I tried to send a simple, unobtrusive email message to get you into the spirit. Well, much like the bell ringers that I ignore in front of the Wal-Mart, you ignored me.I probably should have seen that coming...However, unlike those poor souls, I know how to contact you. And I can find out where you live. So, so, so, you better feel lucky that I'm too lazy to terrorize you people, but cause I could do it.Remember, it's not for me, it's for those poor kids... and the feral platypii.  Because, we can make more children, but platypii are hard to come by.=== ORIGINAL MESSAGE FOLLOWS ===It's that time of year again. The time when I beg you for money for charity. See, unlike those bell ringers outside Wal-Mart, I don't do it when you have ten bazillion holiday obligations...Once again, I will be enduring a 24-hour marathon of gaming to raise money for Children Hospital in Birmingham. All the money goes straight to them, and you get to tell Uncie Samuel that you're good for that money. I'd REALLY like to break $1000 this year, as I have come REALLY close for the past 2 year to doing so.This year, the event will take place on October 20th, beginning at 8 A.M. Once again, I will try to provide some web streams, etc, if you want to point and laugh (especially if I have to result to playing Dance Central at 4 AM to stay awake for the last part.)Look at it this way, I'm going to badger you about this for the next month. You might as well donate some money so you can righteously tell me to shut the Smurf up.You can place your bid at the link below. Feel free to spread the word to anyone and everyone.I thank you. The children thank you. Several breeds of feral platypus thank you. Maybe, just maybe, doing so will help you feel the love felt by re-fried beans when lovingly hugged in a warm tortilla.Enjoy your burrito.http://www.extra-life.org/participant/cgardner

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  • Year 2012 So Far...

    - by rajeshr
    It's hard to seek excuses for not showing up in here for regular updates. I'm not venturing into it hence. Year 2012 has been very engaging, both professionally and personally, and I wish to present before you some wonderful people whom I met in the OU classrooms while delivering training programs on various Oracle technologies. While I went through a number of Oracle products in the last few months, two of 'em were more regular than others: Solaris 11 and MySQL. Not to forget the First Global Teach Live Virtual Class on Java ME. Oracle Solaris 11 Training in Bangalore Oracle Solaris 11 Training in Delhi Oracle Solaris 11 Training in Hyderabad Oracle VM for SPARC Training at OU Hong Kong Oracle VM for SPARC Training at Bangalore Oracle Solaris 11 Training in Bangalore Oracle Solaris 10 Training in Bangalore Oracle Solaris 11 Training in Delhi MySQL training Programs at Kochi, Kerala. Attending Ofir Leitner's Pilot teach on Java ME Oracle Solaris 11 Training in Bangalore Sad, I don't have photographs of some smart people whom I came across in my live virtual classes on various Oracle technologies

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  • Oracle Romania Summer School

    - by Maria Sandu
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 What would you say about a Summer School within a corporation where you can learn, play and practice? You might think that this is something usually uncommon for a company and you would be right. However, Oracle’s main value being innovation, we came up with a new project for Romanian students and graduates. We organised Oracle Summer School , offering them the opportunity to develop their soft skills and gain valuable business knowledge and exposure. How was Oracle Summer School programme organised? We focused on students and graduates’ needs and combined business experience with training and practice. The twenty four participants had different backgrounds, being interested in Software, Hardware, Finance, Marketing or other areas. The programme fulfilled each of these needs, bringing them in contact with Specialists and Managers. The first two weeks were dedicated to the company visits, business presentations and networking. The participants got an insight about employees’ activities and projects. Storytelling was also part of the program and people from different departments spent a couple of hours with the participants, sharing their experiences, knowledge and interesting stories. The Recruitment team delivered a training about the job interview skills in order to make the participants feel better prepared for a Recruitment process. The second module consisted of two weeks of Soft Skills trainings delivered by professional trainers from different departments. The participants gained useful insight on the competencies required within a business environment. The evenings were dedicated to social activities and it not very long until they started feel part of a team. The third module will take place at the end of September and will put the participants in contact with senior people from the business who will become their Mentors. What do the participants say about Oracle Summer School? “ As a fresh computer science graduate, Oracle Summer School gave me the opportunity of finding what are the technical and nontechnical skills required in a large multinational company. It was a great way of seeing how the theoretical knowledge I received during college is applied in real-life scenarios and what skills I still need to develop. “  (Cosmin Radu) “ When arriving at Oracle I had high expectations, but did not know exactly what was going to unfold because of the program's lack of precedence. Right after the first day, my feedback outgrew the initial forecast and the following weeks continued to build upon it. I had the pleasure to acquaint with brilliant people. The program was outlined on various profiles, delivering a comprehensive experience. It was very engaging, informative and nevertheless fun. “ (Vlad Manciu) „ Oracle Summer School is by far the best summer school that I have ever attended. For me it has been a great experience so far, because I’ve learned not only how to use soft skills in a corporate environment, but I’ve learned a great deal about myself as well. However, the most valuable asset of this 3-week period were the people that I’ve met: great individuals and great professionals, whom I really grew fond of.” (Alexandru Purcarea) “Applying to Oracle Summer School has been the best decision I took in regard to how to spend my summer holiday. I had the chance to do job shadowing at some of the departments I was interested in and I attended great trainings on various subjects such as time management and emotional intelligence. Moreover, I made friends with the other participants and we enjoyed going out together after “classes”.(Andreea Tudor) If you are interested in joining our team and attending our events please follow us on https://campus.oracle.com/campus/HR/emea_main.html /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-family:"Calibri","sans-serif"; mso-ascii- mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi- mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • SEO and Spelling mistakes in keyword

    - by Sushil
    I am about to register a domain name (suppose) someone.com (with proper spelling), in mind targeting the keyword "SOMEONE". But then I discovered on 'google keyword research tool' that not this but a typo "SOME1" seems to be more popular and people search this significantly more often than the proper keyword. And luckily someone.com and some1.com both are available. I understand that I can register both the domains, but I don't know on which should I keep my website and redirect the other one. Should I make the typo "some1.com" my base site? But that's a typo. P.S., my site has a totally relevant content and not just keyword targeted worthless site. What do you guys suggest? I am confused. How would that affect my SEO ranking?? EDIT: Because the competition for the keyword I am targeting is fairly low, I think nevertheless whatever domain I choose, it will appear on the search engine first page.

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  • Mouse Clicks, Reactive Extensions and StreamInsight Mashup

    I had an hour spare this afternoon so I wanted to have another play with Reactive Extensions in .Net and StreamInsight.  I also didn’t want to simply use a console window as a way of gathering events so I decided to use a windows form instead. The task I set myself was this. Whenever I click on my form I want to subscribe to the event and output its location to the console window and also the timestamp of the event.  In addition to this I want to know for every mouse click I do, how many mouse clicks have happened in the last 5 seconds. The second point here is really interesting.  I have often found this when working with people on problems.  It is how you ask the question that determines how you tackle the problem.  I will show 2 ways of possibly answering the second question depending on how the question was interpreted. As a side effect of this example I will show how time in StreamInsight can stand still.  This is an important concept and we can see it in the output later. Now to the code.  I will break it all down in this blogpost but you can download the solution and see it all together. I created a Console application and then instantiate a windows form.   frm = new Form(); Thread g = new Thread(CallUI); g.SetApartmentState(ApartmentState.STA); g.Start();   Call UI looks like this   static void CallUI() { System.Windows.Forms.Application.Run(frm); frm.Activate(); frm.BringToFront(); }   Now what we need to do is create an observable from the MouseClick event on the form.  For this we use the Reactive Extensions.   var lblevt = Observable.FromEvent<MouseEventArgs>(frm, "MouseClick").Timestamp();   As mentioned earlier I have two objectives in this example and to solve the first I am going to again use the Reactive extensions.  Let’s subscribe to the MouseClick event and output the location and timestamp to the console. lblevt.Subscribe(evt => { Console.WriteLine("Clicked: {0}, {1} ", evt.Value.EventArgs.Location,evt.Timestamp); }); That should take care of obective #1 but what about the second objective.  For that we need some temporal windowing and this means StreamInsight.  First we need to turn our Observable collection of MouseClick events into a PointStream Server s = Server.Create("Default"); Microsoft.ComplexEventProcessing.Application a = s.CreateApplication("MouseClicks"); var input = lblevt.ToPointStream( a, evt => PointEvent.CreateInsert( evt.Timestamp, new { loc = evt.Value.EventArgs.Location.ToString(), ts = evt.Timestamp.ToLocalTime().ToString() }), AdvanceTimeSettings.IncreasingStartTime);   Now that we have created out PointStream we need to do something with it and this is where we get to our second objective.  It is pretty clear that we want some kind of windowing but what? Here is one way of doing it.  It might not be what you wanted but again it is how the second objective is interpreted   var q = from i in input.TumblingWindow(TimeSpan.FromSeconds(5), HoppingWindowOutputPolicy.ClipToWindowEnd) select new { CountOfClicks = i.Count() };   The above code creates tumbling windows of 5 seconds and counts the number of events in the windows.  If there are no events in the window then no result is output.  Likewise until an event (MouseClick) is issued then we do not see anything in the output (that is not strictly true because it is the CTI strapped to our MouseClick events that flush the events through the StreamInsight engine not the events themselves).  This approach is centred around the windows and not the events.  Until the windows complete and a CTI is issued then no events are pushed through. An alternate way of answering our second question is below   var q = from i in input.AlterEventDuration(evt => TimeSpan.FromSeconds(5)).SnapshotWindow(SnapshotWindowOutputPolicy.Clip) select new { CountOfClicks = i.Count() };   In this code we extend the duration of each MouseClick to five seconds.  We then create  Snapshot Windows over those events.  Snapshot windows are discussed in detail here.  With this solution we are centred around the events.  It is the events that are driving the output.  Let’s have a look at the output from this solution as it may be a little confusing. First though let me show how we get the output from StreamInsight into the Console window. foreach (var x in q.ToPointEnumerable().Where(e => e.EventKind != EventKind.Cti)) { Console.WriteLine(x.Payload.CountOfClicks); }   Ok so now to the output.   The table at the top shows the output from our routine and the table at the bottom helps to explain the output.  One of the things that will help as well is, you will note that for our PointStream we set the issuing of CTIs to be IncreasingStartTime.  What this means is that the CTI is placed right at the start of the event so will not flush the event with which it was issued but will flush those prior to it.  In the bottom table the Blue fill is where we issued a click.  Yellow fill is the duration and boundaries of our events.  The numbers at the bottom indicate the count of events   Clicked 22:40:16                                 Clicked 23:40:18                                 1                                   Clicked 23:40:20                                 2                                   Clicked 23:40:22                                 3                                   2                                   Clicked 23:40:24                                 3                                   2                                   Clicked 23:40:32                                 3                                   2                                   1                                                                                                         secs 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32                                                                                                                                                                                                                         counts   1   2 3 2 3 2 3   2   1           What we can see here in the output is that the counts include all the end edges that have occurred between the mouse clicks.  If we look specifically at the mouse click at 22:40:32. then we see that 3 events are returned to us. These include the following End Edge count at 22:40:25 End Edge count at 22:40:27 End Edge count at 22:40:29 Another thing we notice is that until we actually issue a CTI at 22:40:32 then those last 3 snapshot window counts will never be reported. Hopefully this has helped to explain  a few concepts around StreamInsight and the IObservable() pattern.   You can download this solution from here and play.  You will need the Reactive Framework from here and StreamInsight 1.1

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  • Valentine's Day in sunny Ottawa, Ontario

    - by Roy F. Swonger
    Birds may fly south for the winter, but I will be heading to Ottawa, Ontario next week for a workshop on 15-FEB. I'm pretty used to winter because I grew up in the snow belt southeast of Buffalo, NY -- and this winter in New England is helping me get prepared as well. For reference, the big lump is my gas grill. Anyway, I'm looking forward to a good workshop and to visiting Ottawa for my first time. If you're in the Ottawa/Gatineau area and would like to attend, please contact your account team for more information.

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  • Are too many assertions code smell?

    - by Florents
    I've really fallen in love with unit testing and TDD - I am test infected. However, unit testing is used for public methods. Sometimes though I do have to test some assumptions-assertions in private methods too, because some of them are "dangerous" and refactoring can't help further. (I know, testing frameworks allo testing private methods). So, It became a habit of mine that (almost always) the first and the last line of a private method are both assertions. I guess this couldn't be bad (right ??). However, I've noticed that I also tend to use assertions in public methods too (as in the private) just "to be sure". Could this be "testing duplication" since the public method assumpotions are tested from the unit testng framework? Could someone think of too many assertions as a code smell?

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  • Payments for Android through Checkout/AdSense

    - by David Cesarino
    To those that don't know, Android developers in some countries recently transitioned from AdSense to Checkout for Play Store payments. This is told to existing seller accounts: Q: What happens if I have funds in my AdSense account but am not eligible for a payout yet? A: AdSense accounts have minimum thresholds for payouts. If you’re not eligible for a payout through AdSense for [month of migration], the funds will be automatically transferred back to your Google Checkout account. Once you enter bank account information through your Checkout account and have accrued at least $100 USD, your first wire transfer will be issued during the next monthly payout cycle. However, AdSense is still holding my funds, and since Checkout already paid me directly, following the new directives, I'm afraid the funds will be held in AdSense forever (I used AdSense only for Play Store payments, as required). Obviously, this is no replacement for Google support (a crusade to reach them, but nevermind...), I'm just asking if someone experienced this problem during the transition and how it was fixed.

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  • Game Development In C Only. Is it possible?

    - by Ishan Sharma
    I am a first year college student in India and want to make a small game as a this semester project. I am quite good at C and am learning it rapidly but I wanted to ask if developing a game entirely in C(no C++ or C#m I'd love to use these but for college projects, we have strict requirements of using only C). What I am looking for is a simple top view driving game. It won't have anything fancy and even the visual things will be powered by simple characters. For example, user controlled car can be represented by ¦ and edges of road by series of |'s. What do you think?

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