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• Minecraft Coding Pack: Stair block texture

  - by JamerTheProgrammer

  I have MCP setup and working nicely. I would like to make another stair block. I have copied the wooden stair block file and then pasted it and renamed it BlahStairBlock. I'm trying to set a texture for the stair block but it wont work. public int getBlockTextureFromSide(int side) { if(i==side) { // Workshop top return 43; } return blockIndexInTexture; } This is what I'm using to set the texture.... It just isn't working. Any ideas of why?

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• Is this a pattern? Should it be?

  - by Arkadiy

  The following is more of a statement than a question - it describes something that may be a pattern. The question is: is this a known pattern? Or, if it's not, should it be? I've had a situation where I had to iterate over two dissimilar multi-layer data structures and copy information from one to the other. Depending on particular use case, I had around eight different kinds of layers, combined in about eight different combinations: A-B-C B-C A-C D-E A-D-E and so on After a few unsuccessful attempts to factor out the repetition of per-layer iteration code, I realized that the key difficulty in this refactoring was the fact that the bottom level needed access to data gathered at higher levels. To explicitly accommodate this requirement, I introduced IterationContext class with a number of get() and set() methods for accumulating the necessary information. In the end, I had the following class structure: class Iterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const = 0; }; class RecursingIterator : public Iterator { RecursingIterator(const Iterator &below); }; class IterateOverA : public RecursingIterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const { // Iterate over members in dataStructure1 // locate corresponding item in dataStructure2 (passed via context) // and set it in the context // invoke the sub-iterator }; class IterateOverB : public RecursingIterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const { // iterate over members dataStructure2 (form context) // set dataStructure2's item in the context // locate corresponding item in dataStructure2 (passed via context) // invoke the sub-iterator }; void main() { class FinalCopy : public Iterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const { // copy data from structure 1 to structure 2 in the context, // using some data from higher levels as needed } } IterationContext ctx(dateStructure2); IterateOverA(IterateOverB(FinalCopy())).iterate(dataStructure1, ctx); } It so happens that dataStructure1 is a uniform data structure, similar to XML DOM in that respect, while dataStructure2 is a legacy data structure made of various structs and arrays. This allows me to pass dataStructure1 outside of the context for convenience. In general, either side of the iteration or both sides may be passed via context, as convenient. The key situation points are: complicated code that needs to be invoked in "layers", with multiple combinations of layer types possible at the bottom layer, the information from top layers needs to be visible. The key implementation points are: use of context class to access the data from all levels of iteration complicated iteration code encapsulated in implementation of pure virtual function two interfaces - one aware of underlying iterator, one not aware of it. use of const & to simplify the usage syntax.

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• How to build completely modular web applications

  - by Webnet

  In the coming months we're going to begin a project where we take a system we've built for a client (v1) and rebuild it from scratch. Our goal with v2 is to make it modular, so that this specific client will have their own set of modules they use, then another client may use a different set of modules altogether. The trick here is that Company A might have a series of checkout and user modules that change how that system works. Company B might stick with the standard checkout procedure but customize how products are browsed. What are some good approaches to application architecture when you're building an application from scratch that you want to have a Core that's shared among all clients while still maintaining the flexability for anything to be modified specifically for a client? I've seen CodeIgniter's hooks and don't think that's a good solution as we could end up with 250 hooks and it's still not flexible enough. What are some other solutions? Ideally we won't need to draw a line in the sand.

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• Rotate 2d sprite towards pointer

  - by Phil

  I'm using Crafty.js and am trying to point a sprite towards the mouse pointer. I have a function for getting the degree between two points and I'm pretty sure it works mathematically (I have it under unit tests). At least it responds that the degree between { 0,0} and {1,1} is 45, which seems right. However, when I set the sprite rotation to the returned degree, it's just wrong all the time. If I manually set it to 90, 45, etc, it gets the right direction.. I have a jsfiddle that shows what I've done so far. Any ideas?

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• Trust External Surround Soundcard SC-5500p not working

  - by Ederico

  I got the following external sound card to make some awesome noise with my speaker set. It should be plug and play, but it so happens that when I plug it in and hook everything up, there's no sound at all. The speaker set I have works if I plug it in the laptop directly (or rather, if I plug the front speakers cable as I can't plug anything else). http://www.trust.com/products/product.aspx?artnr=14134 Would anyone know how I can workaround this problem and make full use of this external sound card on my Ubuntu 12.04 system?

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• Root directory of the kernel

  - by user592748

  A newbie here. I am trying to set up Eclipse for Linux Kernel Programming. The guide says set the project location as the root directory of the kernel. Where's the root directory of the kernel now? According to Linux file hierarchy system, it lists /lib as the root directory for shared libraries and kernel modules. I also see /lib32 and /lib64. However, I tried proceeding selecting /lib as the location and eclipse doesn't allow me to create the project.

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• Is there a way to forward emails associated with a domain without a mail server?

  - by MeltingDog

  A client owns example1.com but wants to also purchase example2.com and have it point to their original site at example1.com. No problem there. But they also want any emails going to example2.com to be forwarded to their counter parts at example1.com Eg: if someone emails [email protected] it will be forwarded to [email protected] They only way I can think of doing this at the moment is to set up host for example2.com and then set up mail forwarders in cpanel. But this seems a bit excessive and costly. Does anyone know another, cheaper way of doing this?

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• No Sound via HDMI

  - by Goony Hill

  I have ubuntu installed on a Acer aspire revo 3700 intel atom processor with nvidia ion graphics this is plugged into a celcus 32 inch TV via HDMI (1080p). The video driver shows as an nvidia which I can select. I have set the sound to play via HDMI and the output to HDMI but get no sound. I have tried a sony 1080i TV with the box but get eratic results with the graphics, but the sound picks up straight away that is there is no need to select it. The graphics on the celcus TV work but I get a dialog box showing loads of different resolutions and frequencies which I have to close manually, these appear to be attempts to set different resolutions for the TV. Am I missing some sort of screen/sound driver, if so does anyone know what might support the celcus 32 inch (1080p) tv?

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• Can turning off drm_kms_helper polling affect screen brightness control?

  - by dodecaphonic

  I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question. The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot. Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

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• Old school trick that I forgot

  - by DavidMadden

  If you have to support some older Winforms you might like to remember this.  When opening a MessageBox to display that the user entered incorrect information, if you are doing so from a dialog, catch the DialogResult of the MessageBox and then set  this.DialogResult = DialogResult.None; to prevent the dialog from closing if you want the user to try again.  Otherwise, it will close the dialog box and return to the section of code that called it.Note:  You do not have to catch the DialogResult from the MessageBox.  You can still set this after the return from the call to the MessageBox.  Just make sure to do either but exiting the body of the dialog itself.

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• How can I alias domains to subdomains?

  - by user745668

  I have a main site with a bunch of subdomains created. Each subdomain is a blog and I want each blog to have its own domain name i.e. thisguy.com - blog1.mainsite.com thatguy.com - blog2.mainsite.com I bought the new domains and I set up the CNAME records as above to alias them to the appropriate subdomains. However, I get my hosts "a domain is pointing to one of our servers but we don't know anything about it" landing page. How can I set up these domains as aliases of my subdomains?

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• AdWords traffic not (properly) reflected in Analytics

  - by CJM

  I have an AdWords account, which was set to use Auto-tagging of URLs. When looking at the Analytics account for that site, I couldn't find any reference to AdWords traffic either in the Advertising section or the Traffic Sources section. So I manually constructed the URL tags, and updated the Campaign Ad. Once the ad was approved and the clicks started coming through again, I could see the results in the Traffic Sources section of Analytics. In the Sources Campaigns section, my campaign was listed, and under Sources All Traffic, it was registering the same level of traffic from google/adwords. However, the Advertising AdWords section is still drawing a blank. Any ideas? Are there explicit steps needed to enable full tracking of AdWords campaigns? If it is relevant, the Adwords campaign was set up with one account, and the Analytics tracking with another, but both accounts have full access to both AdWords and Analytics.

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• I can't get a native resolution of 1920x1080 on 11.10 (AOC f22 on a Nvidia Geforce GTS 450)

  - by Mikeeeee

  I have a problem were the highest resolution I can get is 1360x769, this is a 22 inch LCD monitor with a native resolution of 1920x1080_60 I have tried numerous drivers but nothing changed I tried editing the xorg.conf scipt with no success (I am a noob with linux though). Running many commands in terminal witch I got from people with similar problems only gives me errors like "Failed to get size of gamma for output default. I get edid checksum is invalid error on boot down also. I think there maybe a communication problem between my screens EDID and ubuntu although xp and windows 7 detect my screen without any errors and automatically set native resolution. also when I am installing ubuntu I get a horrible screen flashing every few seconds until I have installed the nvidia driver. pc specks if it helps x64 os, mainboard N68PV-GS, 4 gig ram, AMD Phenom(tm) 9350e Quad-Core Processor × 4, Nvidia Geforce gts450 512mb, hard drives set up in a onboard nvidia raid array striped. realy need to get a better resolution, 1360x769 does not look nice on a 22 inch screen. ty

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• UbuntuOne: how to sync folders on different partitions (symlink?)

  - by user37155

  I use Ubuntu One to synch my home/Documents folder among more computers. On a portable tablet I have set the Documents folder in a separate Fat32 partition named sda6, and I made it default documents folder with Ubuntu Tweaks. How do I synchronize it with my /Documents cloud ? I tried to link /sda/Documents in my home folder but it didn't succeed: UbuntuOne still tries to set an own Documents folder and doesn't let me sync the linked folder with the cloud. What can I do, would please anyone help me ? Greetings, Francesco

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• CenturyLink Buys Qwest in $22.4 Billion Deal

  U.S. carrier industry consolidates with a new national access player set to emerge.

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• Funnel Visualisation not showing drop out in steps

  - by cjk

  I have a site where users will follow this path (hopefully): mysite.com/entity mysite.com/entity/pay mysite.com/entity/pay/details mysite.com/entity/pay/confirmation mysite.com/entity/pay/payment mysite.com/entity/paymentsuccessful?lotsofuniquestuff The entity section could be any one of a multitude of entries, but once the user is on a journey it will stay consistent. I have a goal set up for this as a regular expression, with the match being .*PaymentSuccessful.*. This detects goal successes perfectly (as checked with data stored by the site directly). I have set the following steps within the goal: /[a-zA-Z0-9]+/pay /[a-zA-Z0-9]+/pay/details /[a-zA-Z0-9]+/pay/confirmation /[a-zA-Z0-9]+/pay/payment My funnel detects entry into the funnel (e.g. 47 users) of which say 10 complete the funnel. However, all drop offs are after the first step, even though the exist page is listed as the second step! My data also suggests users are getting further in the funnel before failing to reach the goal. What have I done wrong?

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• DataTable to Generic List Conversion

  using System;using System.Collections.Generic;using System.Linq;using System.Data;namespace ConsoleApplication1{ class Program { static void Main(string[] args) { DataTable table = new DataTable { Columns = { {"Number", typeof(int)}, {"Name", typeof(string)} } }; //Just adding few test rows to datatable. for (int i = 1; i <= 5; i++) { table.Rows.Add(i, "Name" + i); } var returnList = from row in table.AsEnumerable() select new MyObject { Number = row.Field<int>("Number"), Name = row.Field<String>("Name") }; //Displaying converted collection foreach (MyObject item in returnList) { Console.WriteLine("{0}\t{1}", item.Number, item.Name); } } } class MyObject { public int Number { get; set; } public String Name { get; set; } }} span.fullpost {display:none;}

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• Ubuntu 12.04 LTS Purple Screen Error. FIX

  - by user100918

  When I boot up my Ubuntu, it hangs on the purple screen. All I can do is press Shift on start up and it gives me these 3 options. -Normal Boot -Perform Disk Scan -Restore Factory Settings I can also either press E or C. C for for GRUB command line. E for GNU GRUB and says these things setparams 'Restore Factory Settings' set gfxpayload=text insmod part_msdos insmod ext2 set root='(hd0,nsdos1)' linux /boot/vmlinuz-3.3.8-24-generic root=LABEL=SYSTEM ro acpi_osi_=Linux acpi_backlight=\ vendor quiet aufs=restore initrd /boot/initrd.img=3.3.8-24-aufs What is the problem and how do

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• is this the correct way to use glTexCoordPointer?

  - by RubyKing

  Hey all Just trying to work out how to use this function glTexCoordPointer. Here is the man pages http://www.opengl.org/sdk/docs/man/xhtml/glTexCoordPointer.xml which states that I must set a pointer to the first element of the array that uses the texture cordinate. Here is my array static const GLfloat GUIVertices[] = { //FIRST QUAD 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, -1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.94f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.94f, 0.0f, 1.0f, 1.0f, 1.0f, //2ND QUAD // x y z w X Y 1.0f, -1.0f, 0.0f, 1.0f, 1.0f, 0.0f, -1.0f,-1.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f,-0.94f, 0.0f,1.0f, 0.0f, 1.0f, 1.0f, -0.94f, 0.0f,1.0f, 1.0f, 1.0, }; But how do I set the pointer correctly? like this glTexCoordPointer(1, GL_FLOAT, 6, reinterpret_cast(29 * sizeof(float)) ); for the fifth element on the 2nd quad first row. any help is thankful

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• Design Pattern for Data Validation

  - by melodui

  What would be the best design pattern for this problem: I have an Object A. Object A can either be registered or deleted from the database depending on the user request. Data validation is performed before registration or deletion of the object. There are a set of rules to be checked before the object can be registered and another set of rules for deletion. Some of these rules are common for both operations. So far, I think the Chain of Responsibility design pattern fits the most but I'm having trouble implementing it.

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• Why is the MaskBit maxed out

  - by CStreel

  Hi there for some reason the maskbit of my b2FixtureDef is being maxxed out and im not sure why Here is the declaration of the items that are used in the game enum PhysicBits { PB_NONE = 0x0000, PB_PLAYER = 0x0001, PB_PLATFORM = 0x0002 }; Basically what i want is the player to run along a surface is not slow down (i set platform & player friction to 0.0f) I then setup my Contact Listener to print out the connections (currently only have 1 platform and 1 player) Player Fixture Def b2FixtureDef fixtureDef; fixtureDef.shape = &groundBox; fixtureDef.density = 1.0f; fixtureDef.friction = 0.0f; fixtureDef.filter.categoryBits = PB_PLAYER; fixtureDef.filter.maskBits = PB_PLATFORM; Platform Fixture Def b2FixtureDef fixtureDef; fixtureDef.shape = &groundBox; fixtureDef.density = 1.0f; fixtureDef.friction = 0.0f; fixtureDef.filter.categoryBits = PB_PLATFORM; fixtureDef.filter.maskBits = PB_PLAYER; Now correct me if im wrong but these are saying the following: Player Collides with Platform Platform Collides with Player Here is the printout of the fixtures colliding with each other ******** <-- Indicates new Contact Platform ContactA: 2 MaskA: 1 ------ Player ContactB: 1 MaskB: 2 ******** <-- Indicates new Contact Platform ContactA: 2 MaskA: 1 ------ Player ContactB: 1 MaskB: 65535 ******** <-- Indicates new Contact Platform ContactA: 1 MaskA: 65535 ------ Player ContactB: 1 MaskB: 65535 Here is where i am confused. On the second & third contact the player maskBit is set to 65535 when it should be 2 and there are 3 contacts when i am sure at most there should only be 2. I've been trying to figure this out for hours and i can't understand why it is doing this. I would be very grateful is someone could shine some light on this for me UPDATE: **I printed out the class of the contacting objects. For some reason it seems to do the following: First Contact: Correct Result. Second Contact: Player b2Fixture Obtains a new maskBit. Third Contact: Platform b2Fixture appears to be set to the same as the Player b2Fixture. It would seem I have a memory race condition i think**

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• Random Cache Expiry

  - by mahemoff

  I've been experimenting with random cache expiry times to avoid situations where an individual request forces multiple things to update at once. For example, a web page might include five different components. If each is set to time out in 30 minutes, the user will have a long wait time every 30 minutes. So instead, you set them all to a random time between 15 and 45 minutes to make it likely at most only one component will reload for any given page load. I'm trying to find any research or guidelines on this topic, e.g. optimal variance parameters. I do recall seeing one article about how Google (?) uses this technique, but can't locate it, and there doesn't seem to be much written about the topic.

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• Particle system lifetimes in OpenGL ES 2

  - by user16547

  I don't know how to work with my particle's lifetimes. My design is simple: each particle has a position, a speed and a lifetime. At each frame, each particle should update its position like this: position.y = position.y + INCREMENT * speed.y However, I'm having difficulties in choosing my INCREMENT. If I set it to some sort of FRAME_COUNT, it looks fine until FRAME_COUNT has to be set back to 0. The effect will be that all particles start over at the same time, which I don't want to happen. I want my particles sort of live "independent" of each other. That's the reason I need a lifetime, but I don't know how to make use of it. I added a lifetime for each particle in the particle buffer, but I also need an individual increment that's updated on each frame, so that when PARTICLE_INCREMENT = PARTICLE_LIFETIME, each increment goes back to 0. How can I achieve something like that?

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• Algorithm for determining grid based on variably sized "blocks"?

  - by Lite Byte

  I'm trying to convert a set of "blocks" in to a grid-like layout. The blocks have a width of either 25%, 33%, 50%, 66%, or 75% of their container and each row of the grid should try to fit as many blocks as possible, up to a total width of 100%. I've discovered that trying to do this while leaving no remaining blocks in the original set is very hard. Eventually, I think my solution will be to upgrade/downgrade various block sizes (based on their priority or something) so they all fit in to a row. Either case, before I do that, I thought I'd check if someone has some code (or a paper) demonstrating a solution to this problem already? And bonus points if the solution incorporates varying block heights in to its calculations :) Thanks!

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• Is it viable to become a contract programmer straight out of college?

  - by M G

  I have a Bachelor of Science in Computer Science and four months research experience designing and implementing a research project. I realize this is highly dependent on my skill set - which includes C, C++, Java, Python, and SQL. I feel I have an advantage in two ways: I am young and am not afraid to work overtime. I am willing to take lower pay to gather a client base/experience, and work nights/weekends to get a few projects under my belt. This may be cliche, but I feel that I can learn new technologies quicker than most. At the very least, I am not a slow study. With this being said, is it viable for me to become a contract programmer? Or do I need the 10+ year skill set that most contractors bring to the table?

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