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  • It is a Good Idea to Buy Backlinks

    Have you heard of backlinks? These are specific links from other websites that come to your website with the purpose of linking due to relevance in terms of content or in terms of merchandise, etc. For instance, if you are a modern art artist and specialize in customized art work, then you can have your service posted on relevant web pages, like an arts and craft website, etc.

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  • No idea of how to simulate car crashes

    - by user2332868
    I have a simple car game with all the basic collision detection and movement in Unity with C#. But when I was building the "engine" for the game I didn't include a detail I later decided to include. I want the possibility so that cars can get damaged and so that the model can change. For example the car looked like it was new and after a crash it looks like a wreck. Please help me by pointing to some resources or by telling me approximate ways of implementing this new feature. Thanks!

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  • The idea of functionN in Scala / Functionaljava

    - by Luke Murphy
    From brain driven development It turns out, that every Function you’ll ever define in Scala, will become an instance of an Implementation which will feature a certain Function Trait. There is a whole bunch of that Function Traits, ranging from Function1 up to Function22. Since Functions are Objects in Scala and Scala is a statically typed language, it has to provide an appropriate type for every Function which comes with a different number of arguments. If you define a Function with two arguments, the compiler picks Function2 as the underlying type. Also, from Michael Froh's blog You need to make FunctionN classes for each number of parameters that you want? Yes, but you define the classes once and then you use them forever, or ideally they're already defined in a library (e.g. Functional Java defines classes F, F2, ..., F8, and the Scala standard library defines classes Function1, ..., Function22) So we have a list of function traits (Scala), and a list of interfaces (Functional-java) to enable us to have first class funtions. I am trying to understand exactly why this is the case. I know, in Java for example, when I write a method say, public int add(int a, int b){ return a + b; } That I cannot go ahead and write add(3,4,5); ( error would be something like : method add cannot be applied to give types ) We simply have to define an interface/trait for functions with different parameters, because of static typing?

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  • AZGroups.org Postcard Idea

    VistaPrint.com is a place that prints very cheap (free sometimes) business cards and post cards. I’ve used them in the past for my user group business cards. The printing is free, but you have to pay fro shipping, and they usually have a VistaPrint Logo on them. For community stuff, it’s great. I received an email this morning about a free post card offer, and I thought I would put together a post card that promotes the AZGroups.org calendar. This calendar is meant to be a simple calendar...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Why is it a bad idea to use a customer email as the from address

    - by Crab Bucket
    I've got an application that emails users once they have filled in a form. It uses a [email protected] as a from address. The customer wants it to use the email from the form as the from address which could be anything. I have been told that this is a bad idea due to spoofing/blacklisting and spam. I feel really vague about the exact reason about why this is a bad idea particularly as i've got to try to counsel the client out of this. Can someone explain to me why this is a bad idea. Interestingly the client has used a gmail account as the from address as a demo which not only works fine but has enabled the application to start sending emails (it wouldn't do it before with an email which was [email protected]). Erm - what is going on. I'm told one thing and the opposite works. Sorry - i know this is basic but I could find anything on a google search. Largely I think because I'm having trouble even framing the question. EDIT Thank you everyone - great answers. Interestingly the server sending the email and the mail box that it is going to are both behind the same firewall so the client says they are unconcerned about spam. Oh well.

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  • Are soft deletes a good idea?

    - by Khou
    Are soft deletes a good idea or a bad idea? Instead of actually deleting a record in your database, you would just flag it as "IsDeleted" = true, and upon recovery of the record you could just flag it as "False". Is this a good idea?

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  • Varnish -> Nginx -> Apache a good idea?

    - by Zoran Zaric
    Hey, I'm thinking about the architecture for a new Webserver. Would having Varnish as a cache in front of Nginx as a reverse-proxy and serving static files in front of apache for all heavy lifting be a good idea? I'm going to run php and ruby on rails applications. Will there be too much overhead passing php requests to apache through two other processes? Thanks a lot!

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  • Is this distributed database server idea feasible?

    - by David
    I often use SQLite for creating simple programs in companies. The database is placed on a file server. This works fine as long as there are not more than about 50 users working towards the database concurrently (though depending on whether it is reads or writes). Once there are more than this, they will notice a slowdown if there are a lot of concurrent writing on the server as lots of time is spent on locks, and there is nothing like a cache as there is no database server. The advantage of not needing a database server is that the time to set up something like a company Wiki or similar can be reduced from several months to just days. It often takes several months because some IT-department needs to order the server and it needs to conform with the company policies and security rules and it needs to be placed on the outsourced server hosting facility, which screws up and places it in the wrong localtion etc. etc. Therefore, I thought of an idea to create a distributed database server. The process would be as follows: A user on a company computer edits something on a Wiki page (which uses this database as its backend), to do this he reads a file on the local harddisk stating the ip-address of the last desktop computer to be a database server. He then tries to contact this computer directly via TCP/IP. If it does not answer, then he will read a file on the file server stating the ip-address of the last desktop computer to be a database server. If this server does not answer either, his own desktop computer will become the database server and register its ip-address in the same file. The SQL update statement can then be executed, and other desktop computers can connect to his directly. The point with this architecture is that, the higher load, the better it will function, as each desktop computer will always know the ip-address of the database server. Also, using this setup, I believe that a database placed on a fileserver could serve hundreds of desktop computers instead of the current 50 or so. I also do not believe that the load on the single desktop computer, which has become database server will ever be noticable, as there will be no hard disk operations on this desktop, only on the file server. Is this idea feasible? Does it already exist? What kind of database could support such an architecture?

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  • What is the best IDE to develop Android apps in?

    - by Jamey McElveen
    I am about to start developing an android app and need to get an IDE. Eclipse and the android eclipse plugin appears to be the natural choice. However I am familiar with intelliJ and re-sharper so I would prefer use intelliJ. Has anyone used http://code.google.com/p/idea-android/"http://code.google.com/p/idea-android/? Is this any good? Should I just bite the bullet and learn Eclipse?

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  • ASP.NET, PostgreSQL, Mono, Ubuntu, Apache: Good idea?

    - by wreck_of_u
    I am a long-time Microsoft .NET developer. ASP.NET/MSSQL/IIS has been my bread & butter over the past 6 years. Now, I'm getting fond of the "lightweightness" of Ubuntu 10.xx server. I'm also loving SSH-ing it from my Windows 7 PC and installing apps using the awesome "apt-get" command. I've also been using HeidiSQL with MySQL now and loving it. It feels like Management Studio. However, i've read that PostgreSQL "may" be better than MySQL, and I did experience some MySQL overloads in my Moodle box (but this can be just a poor tweaking in my part). My question is, would it be a good idea to run this configuration? ASP.NET 4.0 PostgreSQL (the latest one I can apt-get!) Ubuntu 10.10 with Mono running on Apache Also, I assume I would be using Npgsql for Mono as my connector from ASP.NET to PostgreSQL?

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  • Context menu on Intellj IDEA

    - by Otavio Macedo
    I have installed Intellij IDEA 10 on Linux (Ubuntu 8.04) and the way the context menu works is annoying me. The context menu is visible as long as I keep the right button pressed (if I release the button, the menu disappears). To click on a menu item, I have to position the cursor upon the item with the right button pressed and then release it. I've also figured out two alternative ways to keep the menu visible with the right button released: To right-click, drag, and release the button outside the context menu. Ctrl + Right-click or Shift + Right-click But I would expect the "normal" behavior: that when I right-click and release, the menu keeps visible until the next click (on an item or outside the menu). Is there a way to change this behavior? Thanks in advance.

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  • Best idea dataserver serving small pictures 40 ko

    - by Nicolas Manzini
    I'm designing the server structure for my application in case things go well. I have one server DB connected to multiple server who process connections. All those with lots of RAM and fast processors. (still looking for a way to use the multithread because now it's dumb apache php... so loooots of ram needed). Upon an answer from those servers, the client can then connect to another server to retrieve pictures using the address he previously got from the db. Is it a good idea to have one database server with let's say nginx and ssd disk having to send all pictures to everybody? or should I have multiple server accessing to a shared ssd disk drive or multiple disk updating each other? Also should I put a lot of RAM on the database server? because probably there wont be a picture more popular than another.

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  • Crazy idea: Connect .NET and SAP with SAP JCo using IKVM.NET

    - by Kottan
    Because the SAP Connector for .NET is no longer maintained by SAP, I am now looking for an alternative to connect the Microsoft world with the SAP world. I know there a third party products like ERPConnect, but I want to do this with tools from SAP. Therefore there arised the crazy idea to use the SAP Java Connector in combination with the tool IKVM.NET (www.ikvm.net/devguide/net2java.html). IKVM.NET provides The IKVMC tool, which converts Java bytecode to .NET dll's and exe's. "No sooner said than done!" I converted the SAP JCo to .NET dlls and created a new Visual Studio solution. I put all the JCO files into a subdirectory of my solution. I set 2 references to the generated IKVM.OpenJDK.Core.dll and sapjco.dll. Great, all JCO classes where now available as .NET classes. Full of optimism I wrote some little code to connect to a SAP system. JCO.Client client = null; client = JCO.createClient(...) The compiliation of my testcode had no errors. "Wonderful !" I thought. Then I started my tetstapplication. Unfortunately I got an exception calling JCO.createClient: Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'\r\nno sapjcorfc in java.library.path I have 2 questions on this topic. 1) Do you think my idea using SAP Java Connector to connect .NET with SAP is a good idea or is it nonsens ? Perhaps someone had already the same idea ;-) 2) How can the above exception be solved ?

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  • Is this 2D array initialization a bad idea?

    - by Brendan Long
    I have something I need a 2D array for, but for better cache performance, I'd rather have it actually be a normal array. Here's the idea I had but I don't know if it's a terrible idea: const int XWIDTH = 10, YWIDTH = 10; int main(){ int * tempInts = new int[XWIDTH * YWIDTH]; int ** ints = new int*[XWIDTH]; for(int i=0; i<XWIDTH; i++){ ints[i] = &tempInts[i*YWIDTH]; } // do things with ints delete[] ints[0]; delete[] ints; return 0; } So the idea is that instead of newing a bunch of arrays (and having them placed in different places in memory), I just point to an array I made all at once. The reason for the delete[] (int*) ints; is because I'm actually doing this in a class and it would save [trivial amounts of] memory to not save the original pointer. Just wondering if there's any reasons this is a horrible idea. Or if there's an easier/better way. The goal is to be able to access the array as ints[x][y] rather than ints[x*YWIDTH+y].

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  • Classes in same package

    - by nicholas_r
    I love the Intellij IDEA but i have been stacked on one little problem with Java imports. So for example there is a package with name "example" and two different classes in it: A.java and B.java. And i wanna get access to class "A" from class "B" without imports. Like this: class A: package example; public class A{ ... some stuff here ...} class B: package example; public class B{ public static void main(String[] args){ A myVar = 1234; } } This code may not work, but it's doesn't matter. Trouble just with IDE and with its mechanism of importing classes. So, problem is that i can't see A class from B. Idea says 'Cant resolve symbol' but i actually know that class A exists in package. Next strange is that complier works fine and there are no exceptions. Just IDEA can't see the class in the same package. Does anybody has any ideas?

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  • IntelliJ 9, Glassfish 2.1.1 & Maven2

    - by Xetius
    I have a Maven2 project which I am editing in IntelliJ IDEA 9.0.2. I am trying to build it and debug it within a Glassfish 2.1.1 container. This is only working sometimes. Occasionally it is giving me an error, telling me it can't deploy. Other times, it deploys, but does not run the filtering on the POM, not replacing a variable in the sun-web.xml file (and other container specific files) leaving it as ${targetenv} instead of replacing it with the value it should. I think I am missing something here, and have something very confused, but I have no idea what. Any help would be most gratefully received.

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  • Hash Map Usage and Idea

    - by Anand
    Hi, I have been working in Java for the last 6 months and have been using Hash Maps What is the basic idea of a Hash Map ? I am using it as it easy for me to store so much data with direct key references rather than having to iterate through an arraylist ? Where is the power of Hash Map seen ? What is the scientific idea behind this data structure ?

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  • Idea for Networking Projects ?

    - by Vishwanath dalvi
    I'm appearing for final year B.E (Degree) Information technology,I want idea for networking projects that i can Implement in final year using Cisco microsoft or Linux based technology any idea that can be implemented and can help in future for networking ....

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