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Articles indexed in April 2010

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  • What is the purpose of Java's unary plus operator?

    - by Syntactic
    Java's unary plus operator appears to have come over from C, via C++. As near as I can tell, it has the following effects: promotes its operand to int, if it's not already an int or wider unboxes its operand, if it's a wrapper object complicates slightly the parsing of evil expressions containing large numbers of consecutive plus signs It seems to me that there are better (or, at least, clearer) ways to do all of these things. In this SO question, concerning the counterpart operator in C#, someone said that "It's there to be overloaded if you feel the need." But in Java, one cannot overload any operator. So does this operator exist in Java just because it existed in C++?

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  • How rar a folder with php ?

    - by Sjne
    I simple want to rar a folder with the help of php, so there's 2 ways to do this one is via shell_exec or exec, which isnt working for me but shell_exec and exec is enabled on server and working for other commands other method is via .sh file, but i dont know how to use it properly :( i need some code which works properly for this

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  • Using multiple databases within one application

    - by Alex
    I have a web application made for several groups of people not connected with each other. Instead of using one database for all of them, I'm thinking about making separate databases. This will improve the speed of the queries and make me free from checking to what group the user belongs. But since I'm working with LINQ to SQL, my classes are explicitly connected with the databases, so I will have to make separate DataContexts for all of the databases. So how can I solve this problem? Or should I just not bother and use one database only?

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  • Android Permission Issue android.permission.READ_CONTACTS

    - by jkmcgee
    Hello, All I am trying to do is read a contact off of my emulator and display it to the screen. I can't seem to resolve this error. Both of my packages (com.msi.ibm.tutorial and .MobileServiceCallContacts) have the permission READ_CONTACTS set in their manifest xml files. So any ideas as to what I've got wrong ? Here is the error message from eclipse console if it helps, it's not helping me, but I'm a little rusty at this and completely new to Android development. MobileServiceCallContacts]Starting activity com.msi.ibm.tutorial.MobileServiceCallContacts on device MobileServiceCallContacts]ActivityManager: Starting: Intent { cmp=com.msi.ibm.tutorial/.MobileServiceCallContacts } MobileServiceCallContacts]ActivityManager: java.lang.SecurityException: Permission Denial: starting Intent { flg=0x10000000 cmp=com.msi.ibm.tutorial/.MobileServiceCallContacts } from null (pid=-1, uid=-1) requires android.permission.READ_CONTACTS

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  • Windows Phone 7 SDK and Visual Studio 2010 RTM

    - by Alex DeLarge
    Hmmm, wonder if I have the first VS 2010 RTM question? Anyway.. Installing the Windows Phone 7 SDK I get the following error Incompatible Products VC 10.0 Runtime .NET Framework 4 Multi-Targeting Pack Microsoft.NET Framework 4 Client Profile Microsoft .NET Framework 4 Extended This was reported as an issue with Beta 2 and the fix was to install the RC. Anyone know why it's incompatible with the RTM? Will we have to wait for an update to the SDK? Regards, Alex..

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  • Fastest possible summing numbers up to N

    - by dada
    Okay so i need really FAST algorithm or code in C if you have any it would be nice. The task is to sum all numbers from 1 to N for a given number N (it can be negative number too), so i did the usual way (you know just summing with loop from 1 to N) but it's not fast enough - i need something faster, i guess that i need the fastest possible way to do this. If anyone could help me, please do. Thanks.

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  • AS3 variables handling by AVM/compiler/scope

    - by jchmielewski
    I have couple of questions about AS3 variables handling by AVM/compiler/scope .1. This code in Flash will throw an error: function myFunction() { var mc:MovieClip=new MovieClip(); var mc:MovieClip=new MovieClip(); } but it won`t throw an error in Flex (only warning in Editor). Why? .2. How Flash sees variables in loops? Apparently this: for (var i:int=0; i<2; i++) { var mc:MovieClip=new MovieClip(); } isn`t equal to just: var mc:MovieClip=new MovieClip(); var mc:MovieClip=new MovieClip(); because it will throw an error again as earlier in Flash, but in Flex in function not? Is Flash changing somehow my loop before compilation? .3. Where in a class in equivalent to timeline in Flash - where in class I would put code which I put normally on timeline (I assume it is not constructor because of what I have written earlier, or maybe it`s a matter of Flash/Flex compiler)?

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  • IPhone SDK 4 background process for incoming call

    - by shaimagz
    I would like to track (run some code - or invoke function) when the user get an incoming call. for example: for every call the user receive I want to save the number, and check something during or before the call is answered (with a background process..) until now without the background processing I couldn't find a way to do this. But I'm still not sure it is possible. I'll be grate full if anyone with information about the new sdk 4 or a good idea to solve it can help me please. Thanks. Shai.

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  • Detect number of IDLE processors ruby

    - by Yannick Wurm
    Hello, I work on shared linux machines with between 4 and 24 cores. To make best use of them, I use the following code to detect the number of processors from my ruby scripts: return `cat /proc/cpuinfo | grep processor | wc -l`.to_i (perhaps there is a pure-ruby way of doing this?) But sometimes a colleague is using six or eight of the 24 cores. (as seen via top). How can I get an estimate of the number of currently unused processors that I can use without making anyone upset? Thanks!

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  • Bulk email notifications API for social networking site

    - by goombaloon
    I'm looking to build a social networking site that notifies followers of a particular user when new content has been posted by that user. Since the hope is that the site will eventually have thousands of users with thousands of followers, I'd prefer to use an outside product/service to send the emails rather than building the functionality into the application and dealing with scalability issues. I've looked at MailChimp and a few others out there. Since my use case isn't really email campaigns, these providers don't seem like the right solution. In fact, MailChimp support confirmed for me that my scenario doesn't fit for them. I'm sure others have run into this same requirement. What are others out there using? I'm using .NET so would like to target something that has a .NET wrapper if possible. Any advice would be most appreciated!

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  • How do I Validate Email or Phone requirement in MVC?

    - by user54197
    In MVC I am using [Required(ErrorMessage="")] to validate my text. How do I utilize a validation for an "Email or Phone Contact" textboxes in my model? I now have the validation in my controller, which I would like to have in the model. CONTROLLER... if (insuredInfo.InsuredHPhone == null && insuredInfo.InsuredWPhone == null) { ModelState.AddModelError("InsuredHPhone", "Contact Number Required"); isRequired = true; }

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  • Pros and Cons of programming languages for XML & string manipulation

    - by aepheus
    I don't mean this to be opinionated. What are serious pros/cons of various server-side languages in regards to creating/modifying xml. I'm currently researching new platform/language direction and we deal with a lot of xml. We also do a lot of string manipulation, what advantages/disadvantages do different languages have in regards to string manipulation. I'm thinking along the lines of regular expression searching and replacing.

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  • Add a custom button to titlebar in Windows Mobile 5

    - by Vaccano
    Is there a way to add a button to the title bar in windows mobile 5? (Next to the X or OK button.) I have an app that locks the users out of the start button, so I need to create an alternate way of launching the help file. Failing the title bar, I will look for a way to customize what a hardware button does. I am using C#.

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  • Simple Prime Generator in Python

    - by marc lincoln
    Hi, could someone please tell me what I'm doing wrong with this code. It is just printing 'count' anyway. I just want a very simple prime generator (nothing fancy). Thanks a lot. lincoln. import math def main(): count = 3 one = 1 while one == 1: for x in range(2, int(math.sqrt(count) + 1)): if count % x == 0: continue if count % x != 0: print count count += 1

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  • Great event : Microsoft Visual Studio 2010 Launch @ Microsoft TechEd Blore

    - by sathya
    Great event : Microsoft Visual Studio 2010 Launch @ Microsoft TechEd Blore   I was really excited on attending the day 1 of Microsoft TechEd 2010 in Bangalore. This is the first Teched that am attending. The event was really fun filled with lot of knowledge sharing sessions and lots of goodies and gifts by the partners Initially the Event Started by Murthy's Session. He explained about the Developers relating to the 5 elements of nature (Pancha Boothaas) 1. Fire - Passion 2. Wave (Water) - Catch the right wave which we need to apply. 3. Earth - Connections and lots of opportunities around the world 4. Air -  Its whatever we breathe. Developers.. Without them nothing is possible. they are like the air 5. Sky - Cloud based applications   Next the Keynote and the announcement of Visual Studio by SomaSegar. List of things that he delivered his speech on : 1. Announcement of Visual Studio 2010 2. Announcement of .NET 4.0 3. Announcement of Silverlight later this week 4. What is the current Trend? Microsoft has done a research with many developers across the globe and have got the following feedback from the users. Get Lost (interrupted) - When we do some work and somebody is calling or interrepting by someother way we lose track of what we were doing and we need to do from the start Falling Behind- Technology gets updated  phenomenally over a period of time and developers always have a scenario like they are not in the state of the art technology and they always have a doubt whether they are staying updated. Lack of Collobaration - When a Manager asks a person what the team members have done and some might be done and some might not be and finally all are into a state like we dont know where we are. So they have addressed these 3 points in the VS 2010 by the following features : Get Lost - Some cool features which could overcome this. We have some Graphical interface. which could show what we have done and where we are. Some Zoom features in the code level. Falling Behind - Everything is based on .NET language base. 2010 has been built in such a way that if developers know the native language that's enough for building good applications. Lack of Collobaration - Some Dashboard Features which would show where exactly the project is. And a graphical user interface is shown on clicking which it directly drills down even to the code level. 5. An overview on all new features in VS 2010. 6. Some good demos of new features in VS 2010 by Polita and one more girl. Some of the new features included : 1. Team Explorer 2. Zoom in Code 3. Ribbon Development 4. Development in Single Platform for Windows Phone, XBox, Zune, Azure, Web Based and Windows based applications 5. Sequence Diagram Generation directly from code 6. Dashboards to show project status 7. Javascript and JQuery intellisense 8. Native support for JQuery 9. Packaging feature while deploying. 10. Generation of different versions of web.config like Web.Config.Production, Web.Config.Staging, etc. 11. IntelliTrace - Eliminating the "Not Reproducible" statement. 12. Automated User Interface Testing. At last in the closing of the day we had a great event called Demo Extravaganza, where lot of cool projects that were launched by Microsoft and also the projects that are under research were also shown. I got a lot of info about Bing today. BING really rocks!!! It has the following : 1. Visual Search 2. Product based search. For each product different menu filters were provided to make an advanced search 3. BING Maps was awesome!! It zoomed in to the street level and we can assume that we are the persons who are walking or running on the road and we can see the real objects like buildings moving by our side. 4. PhotoSynth was used in BING to show up all the images taken around the globe in a 3D format. 5. Formula - If we give some formula it automatically gives the value for the variable or derivation of expression Also some info about some kool touch apps which does an authentication and computation of Teched Attendee's Points that they have scored and the sessions attended. One guy won an XBOX in lucky draw as a gift. There were lot of Partner Stalls like Accenture,Intel,Citrix,MicroFocus,Telerik,infragistics,Sapient etc. Some Offers were provided for us like 50% off on Certifications, 1 free Elearning Course, etc. Stay tuned!! Wil update you on other events too..

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  • Redhat | Openssl installation error

    - by MMRUSer
    make -f objs/Makefile make[1]: Entering directory `/root/fuse-ssh/nginx-0.7.65' cd /usr/bin/openssl \ && make clean \ && ./config --prefix=/usr/bin/openssl/.openssl no-shared no-threads \ && make \ && make install /bin/sh: line 0: cd: /usr/bin/openssl: Not a directory make[1]: *** [/usr/bin/openssl/.openssl/include/openssl/ssl.h] Error 1 make[1]: Leaving directory `/root/fuse-ssh/nginx-0.7.65' make: *** [build] Error 2 where's the actual location of openssl, there are several different places in my system.. How to solve this issue. rpm -ql openssl /usr/bin/openssl /usr/lib64/openssl /usr/lib64/openssl/engines /usr/lib64/openssl/engines/lib4758cca.so /usr/lib64/openssl/engines/libaep.so /usr/lib64/openssl/engines/libatalla.so /usr/lib64/openssl/engines/libchil.so /usr/lib64/openssl/engines/libcswift.so /usr/lib64/openssl/engines/libgmp.so /usr/lib64/openssl/engines/libnuron.so /usr/lib64/openssl/engines/libsureware.so /usr/lib64/openssl/engines/libubsec.so /usr/share/doc/openssl-0.9.8e /usr/share/doc/openssl-0.9.8e/CHANGES /usr/share/doc/openssl-0.9.8e/FAQ /usr/share/doc/openssl-0.9.8e/INSTALL /usr/share/doc/openssl-0.9.8e/LICENSE /usr/share/doc/openssl-0.9.8e/NEWS /usr/share/doc/openssl-0.9.8e/README /usr/share/doc/openssl-0.9.8e/README.FIPS /usr/share/doc/openssl-0.9.8e/c-indentation.el /usr/share/doc/openssl-0.9.8e/openssl.txt /usr/share/doc/openssl-0.9.8e/openssl_button.gif /usr/share/doc/openssl-0.9.8e/openssl_button.html /usr/share/doc/openssl-0.9.8e/ssleay.txt /usr/bin/openssl /usr/lib/openssl /usr/lib/openssl/engines /usr/lib/openssl/engines/lib4758cca.so /usr/lib/openssl/engines/libaep.so /usr/lib/openssl/engines/libatalla.so /usr/lib/openssl/engines/libchil.so /usr/lib/openssl/engines/libcswift.so /usr/lib/openssl/engines/libgmp.so /usr/lib/openssl/engines/libnuron.so /usr/lib/openssl/engines/libsureware.so /usr/lib/openssl/engines/libubsec.so /usr/share/doc/openssl-0.9.8e /usr/share/doc/openssl-0.9.8e/CHANGES /usr/share/doc/openssl-0.9.8e/FAQ /usr/share/doc/openssl-0.9.8e/INSTALL /usr/share/doc/openssl-0.9.8e/LICENSE /usr/share/doc/openssl-0.9.8e/NEWS /usr/share/doc/openssl-0.9.8e/README /usr/share/doc/openssl-0.9.8e/README.FIPS /usr/share/doc/openssl-0.9.8e/c-indentation.el /usr/share/doc/openssl-0.9.8e/openssl.txt /usr/share/doc/openssl-0.9.8e/openssl_button.gif /usr/share/doc/openssl-0.9.8e/openssl_button.html /usr/share/doc/openssl-0.9.8e/ssleay.txt These are the places.. Thanks.

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  • NIC light is turned off after boot on Redhat 4.6 server

    - by hoffmandirt
    I have a 2950 blade server setup with Red Hat 4.6 installed. I cannot get the NIC to work properly after reinstalling Linux. I activated the NIC, but the NIC light will not turn on when I plug the network cable into the hub. The status light on the hub will not turn on either. If I run ifconfig, the NIC status is UP. Also I can ping the IP address that I assign to the Linux machine, but I can't ping anything else that is plugged into the hub. When I reboot the system, the NIC light will stay on until the system fully boots and then it will turn off again. Is there something else that I need to do to get the NIC working? It appears to be disabled even though ifconfig says that it is UP. Maybe I need to configure something within the blade server (iDRAC)?

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  • Wifi ap finder/selector for windows 7

    - by wag2639
    Is there wifi finder program for windows 7 that can let me choose specific access points to connect to? In my school, the wifi network uses the same SSID for numerous access points and usually the default wifi finder in Windows 7 connects to the first one. Even if it connects to the closest one with the best signal, there are times when a specific access point will not work. Machine: Lenovo IdeaPad S10-2 running Windows 7 (32bit) Note: On my ThinkPad, I've got access connection that does the job but that didn't seem to work on the IdeaPad the last time I tried.

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  • Top 5 Places to Get Ideas For the Best Keywords For Your Website

    Keyword research plays an important part when it comes to getting your website to rank well in the search engines. Just imagine how disappointed you will be after you've spend weeks and even months to optimize your website for keywords that you think are good just to find out there's other keywords that will get you two or three times the traffic. Here's a list that will help you identify the right keywords for your site.

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