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• Access to Salesforce.com Data Through Tableau Desktop

  - by dataintegration

  This article will explain how to connect to any of the RSSBus OData Connectors with Tableau's business intelligence tool. While the example uses the Salesforce Connector, the same process can be followed for any of the OData Connectors. Step 1: Download and install both the Salesforce Connector from RSSBus and Tableau Desktop from Tableau. Step 2: Next you will want to configure the Salesforce Connector to connect with your Salesforce.com account. If you browse to the Help tab in the Salesforce Connector application, there is a link to the Getting Started Guide which will walk you through setting up the Salesforce Connector. Step 3: Once you have successfully configured the Salesforce Connector application, you will want to open Tableau and select the Connect to data option at the top left of the window. Step 4: Here you will click on the option labeled OData under the section labeled On a server. Step 5: A new pop up will appear. The box under Step 1 of the pop-up must contain the OData URL of the Salesforce Connector table. You can find this by clicking on the Settings tab of the Salesforce Connector. Once you have found the OData entry URL, you will need to append the table name that you want Tableau to connect with to the OData entry URL. In this example, we will connect to the Account table. Thus, the URL we enter will be: http://localhost:8181/sfconnector/data/conn/odata.rsc/Account. You will also need to add authentication options in this step. To do this, select the Use a Username and Password option in Step 2 of the pop-up and enter the Username and Password of the user who has access to the Salesforce Connector. When you are done, click the Connect button in Step 3 of the pop-up. Step 6: When the connection to the Salesforce Connector is successful, give the connection a name and click the OK button. Step 7: The table columns will be listed on the left side under the Dimensions section of the workspace. Step 8: To view your Salesforce.com data, you can right click under the table name in the Data section at the top left of the dashboard and select the View Data option. Your Saleforce.com data will appear in Tableau.

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• BoundingBox Intersection Problems

  - by Deukalion

  When I try to render two cubes, same sizes, one beside the other. With the same proportions (XYZ). My problem is, why do a Box1.BoundingBox.Contains(Box2.BoundingBox) == ContaintmentType.Intersects - when it clearly doesn't? I'm trying to place objects with BoundingBoxes as "intersection" checking, but this simple example clearly shows that this doesn't work. Why is that? I also try checking height of the next object to be placed, by checking intersection, adding each boxes height += (Max.Y - Min.Y) to a Height value, so when I add a new Box it has a height value. This works, but sometimes due to strange behavior it adds extra values when there isn't anything there. This is an example of what I mean: BoundingBox box1 = GetBoundaries(new Vector3(0, 0, 0), new Vector3(128, 64, 128)); BoundingBox box2 = GetBoundaries(new Vector3(128, 0, 0), new Vector3(128, 64, 128)); if (box1.Contains(box2) == ContainmentType.Intersects) { // This will be executed System.Windows.Forms.MessageBox.Show("Intersects = True"); } if (box1.Contains(box2) == ContainmentType.Disjoint) { System.Windows.Forms.MessageBox.Show("Disjoint = True"); } if (box1.Contains(box2) == ContainmentType.Contains) { System.Windows.Forms.MessageBox.Show("Contains = True"); } Test Method: public BoundingBox GetBoundaries(Vector3 position, Vector3 size) { Vector3[] vertices = new Vector3[8]; vertices[0] = position + new Vector3(-0.5f, 0.5f, -0.5f) * size; vertices[1] = position + new Vector3(-0.5f, 0.5f, 0.5f) * size; vertices[2] = position + new Vector3(0.5f, 0.5f, -0.5f) * size; vertices[3] = position + new Vector3(0.5f, 0.5f, 0.5f) * size; vertices[4] = position + new Vector3(-0.5f, -0.5f, -0.5f) * size; vertices[5] = position + new Vector3(-0.5f, -0.5f, 0.5f) * size; vertices[6] = position + new Vector3(0.5f, -0.5f, -0.5f) * size; vertices[7] = position + new Vector3(0.5f, -0.5f, 0.5f) * size; return BoundingBox.CreateFromPoints(vertices); } Box 1 should start at x -64, Box 2 should start at x 64 which means they never overlap. If I add Box 2 to 129 instead it creates a small gap between the cubes which is not pretty. So, the question is how can I place two cubes beside eachother and make them understand that they do not overlap or actually intersect? Because this way I can never automatically check for intersections or place cube beside eachother.

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• Troubleshoot Database Concurrency in SQL Server with sp_locks

  sp_locks is a useful tool which can help a DBA in detecting and troubleshooting blocking and concurrency scenarios. This article demonstrates a worked example of using sp_locks to troubleshoot a database concurrency issue. Free trial of SQL Backup™“SQL Backup was able to cut down my backup time significantly AND achieved a 90% compression at the same time!” Joe Cheng. Download a free trial now.

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• jQuery - how to check/uncheck a checkbox

  - by Renso

  $('#PrimaryContacts').unbind().change(function() {         if ($('#PrimaryContacts option:selected').val() == 0) {             $('#filterPrimaryContact').removeAttr('checked').trigger('click');         }         else {             $('#filterPrimaryContact').trigger('click');         }     }); Also, in the example above, triggering the checkbox does not change the checkbox value. As depicted above, based on a dropdown box changing and no contact being selected from the drop down box, automatically uncheck the checkbox and trigger it in invoke any event handlers on the checkbox.

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• Any reason not to buy SSL certificates from a reseller?

  - by andrewtweber

  Is there any reason to buy an SSL certificate directly from the host (for $49, for example), instead of through a well-known reseller, for only $10.95? Specifically in my case, I just need to encrypt user data as they fill out forms. Nothing too critical, only usernames and passwords. I don't think my users actually care about the brand name or "trust" level behind the certificate, I'm just looking out for them.

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• Easy way to identify pages which are index, but not linked to on my site

  - by Stephen Connolly

  I'm just wondering if there is an easy way to find out what pages Google has indexed, that are not directly linked on my site, for example: www.mysite.com/skype.html originally had a link in my site menu, but this link was removed. The page is still available when the url is typed directly, but there is no direct link to it. I don't want Google indexing this page any more and want to put a 'disallow' in my robots.txt.

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• Finding privacy sensitive keywords

  - by user69914

  I have a list of about 80,000 unique words or short phrases. These words and short phrases are associated with other data. I'm trying to create a blacklist so I won't use any of the data associated with privacy sensitive words or short phrases. Example sensitive words or short phrases might be associated with sexual or illicit activity. I know that privacy and sensitivity are in the eye of the beholder, but I'm looking for any established list or solutions of this nature.

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• Can I name a team with the name of their city to avoid trademark issues?

  - by Paul

  I was wondering, if you want to make a NBA game on smartphones, without the license held by EA, the first solution seems to name your teams with a different name, such as "Chicragro Brulls" (this is just for the example), but would it be possible to just call your team with the name of the city, such as "Chicago vs. Dallas" ? I know the first solution was chosen by Pro Evolution Soccer, would you know any other game that don't use a license?

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• Understanding the levels of computing

  - by RParadox

  Sorry, for my confused question. I'm looking for some pointers. Up to now I have been working mostly with Java and Python on the application layer and I have only a vague understanding of operating systems and hardware. I want to understand much more about the lower levels of computing, but it gets really overwhelming somehow. At university I took a class about microprogramming, i.e. how processors get hard-wired to implement the ASM codes. Up to now I always thought I wouldn't get more done if learned more about the "low level". One question I have is: how is it even possible that hardware gets hidden almost completely from the developer? Is it accurate to say that the operating system is a software layer for the hardware? One small example: in programming I have never come across the need to understand what L2 or L3 Cache is. For the typical business application environment one almost never needs to understand assembler and the lower levels of computing, because nowadays there is a technology stack for almost anything. I guess the whole point of these lower levels is to provide an interface to higher levels. On the other hand I wonder how much influence the lower levels can have, for example this whole graphics computing thing. So, on the other hand, there is this theoretical computer science branch, which works on abstract computing models. However, I also rarely encountered situations, where I found it helpful thinking in the categories of complexity models, proof verification, etc. I sort of know, that there is a complexity class called NP, and that they are kind of impossible to solve for a big number of N. What I'm missing is a reference for a framework to think about these things. It seems to me, that there all kinds of different camps, who rarely interact. The last few weeks I have been reading about security issues. Here somehow, much of the different layers come together. Attacks and exploits almost always occur on the lower level, so in this case it is necessary to learn about the details of the OSI layers, the inner workings of an OS, etc.

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• Time to Learn from China on Open Standards?

  <b>Open Enterprise:</b> "Europe should be learning from China's example, not sending patronising nastygrams that just makes it look petulant and anachronistic."

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• Is it possible to automatically nofity for update of manually installed packages?

  - by Tim

  If having installed some packages downloaded from website , I was wondering if it is possible to have auto notification when its update is available, just as those packages in Ubuntu repositories. Can the packages downloaded be in deb form, or even in source code? For example, nevernote maintained in sourceforge, http://nevernote.sourceforge.net/index.htm, downloadable from http://sourceforge.net/projects/nevernote/files/Current/nevernote-0.99_i386.deb/download packages from Ubuntu PPA https://launchpad.net/ubuntu/+ppas.

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• Pixels - A cry for some insight

  - by CarrotFile

  I'm pretty new to web developing and I'd love some clarification. Although reading more than one book on the topic, I cannot seem to wrap my head around the pixel concept. I encounter problems with this issue when trying to use CSS and pixel units for design that fits different screen sizes. To my understanding a pixel is the most basic unit used by a monitor in order to compose an image on the screen. So if me resolution is 800 by 600, everything on my screen is rendered using those 800*600 basic building blocks. If I were to enlarge my screen resolution, 3 things would accrue: A. The basic image building block(the pixel) would shrink in size B. The pixels would move close together C. Well, more pixels would now be available All these combined lead to a sharper(depending on the viewing distance) and more detail enabling image. Well so far so good. Here is were I start getting lost: To my knowledge a pixel is not a physical, real object. Monitors are not embedded with a few thousand pixels. I am drawn to this conclusion because anyone can change his screen's resolution, making a pixel on his screen bigger or smaller, and adding or subtracting the amount of total pixels on screen. Adding to that, I have herd that different monitors have different pixel densities. For example Apple's retina monitors. Taking all of the above as my knowledge base, These are my questions: If a pixel has no real world constant size, what does comparing different pixel densities matter? Each screen company can define it's own pixel concept and declare the higher density. What does a bigger pixel density mean? Say we take two screens with the same physical dimensions, but with a different pixel density, am I to assert that the main difference would be the larger density screen being able to display a higher max resolution? Or am I to assert that given the same resolution on both monitors, the higher density one would display a sharper, smaller image? If a pixel is not a fixed size within one monitor, is it a fixed size between the same resolution on two different monitors? For example, would two different monitors, set to the same resolution, be comprised of same size, same quantity pixels? I'd love some help (:

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• gnome mplayer bug?

  - by user49523

  gnome mplayer (gnome-mplayer) does not play video or dvd in expand or when the window is resized the video stay the same size and there is some kind of video error that is a picture of a previous frame of the video ,a small part is display and freezes undefined, unless is put back or not maximize. ..and the aspect of the video is the same 4:3 and do not change for example for 16:9 (and i think here is the error,not sure) other video displays not show this error not sure if is the rigth place do ask here

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• Generating and rendering not point-like particles on GPU

  - by TravisG

  Specifically I'm talking about particles as seen (for example) in the UE4 dev video here. They're not just points and seem to have a nice shape to them that seems to follow their movement. Is it possible to create these kinds of particles (efficiently) completely on the GPU (perhaps through something like motion? Or is the only (or most efficient) way to just create a small particle texture and render small quads for each particle?

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• How to deal with checked exceptions that cannot ever be thrown

  - by ammoQ

  Example: foobar = new InputStreamReader(p.getInputStream(), "ISO-8859-1"); Since the encoding is hardcoded and correct, the constructor will never throw the UnsupportedEncodingException declared in the specification (unless the java implementation is broken, in which case I'm lost anyway). Anyway, Java forces me to deal with that exception anyway. Currently, it looks like that try { foobar = new InputStreamReader(p.getInputStream(), "ISO-8859-1"); } catch(UnsupportedEncodingException e) { /* won't ever happen */ } Any ideas how to make it better?

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• A walkthrough to Application State

  This artcile discuss about the Application Level events,Application state with a simple example...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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• How to avoid oscillation by async event based systems?

  - by inf3rno

  Imagine a system where there are data sources which need to be kept in sync. A simple example is model - view data binding by MVC. Now I intend to describe these kind of systems with data sources and hubs. Data sources are publishing and subscribing for events and hubs are relaying events to data sources. By handling an event a data source will change it state described in the event. By publishing an event the data source puts its current state to the event, so other data sources can use that information to change their state accordingly. The only problem with this system, that events can be reflected from the hub or from the other data sources, and that can put the system into an infinite oscillation (by async or infinite loop by sync). For example A -- data source B -- data source H -- hub A -> H -> A -- reflection from the hub A -> H -> B -> H -> A -- reflection from another data source By sync it is relatively easy to solve this issue. You can compare the current state with the event, and if they are equal, you don't change the state and raise the same event again. By async I could not find a solution yet. The state comparison does not work by async event handling because there is eventual consistency, and new events can be published in an inconsistent state causing the same oscillation. For example: A(*->x) -> H -> B(y->x) -- can go parallel with B(*->y) -> H -> A(x->y) -- so first A changes to x state while B changes to y state -- then B changes to x state while A changes to y state -- and so on for eternity... What do you think is there an algorithm to solve this problem? If there is a solution, is it possible to extend it to prevent oscillation caused by multiple hubs, multiple different events, etc... ? update: I don't think I can make this work without a lot of effort. I think this problem is just the same as we have by syncing multiple databases in a distributed system. So I think what I really need is constraints if I want to prevent this problem in an automatic way. What constraints do you suggest?

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• Gracefully Handling Deadlocks

  - by Derek Dieter

  In some situations, deadlocks may need to be dealt with not by changing the source of the deadlock, but by changing handling the deadlock gracefully. An example of this may be an external subscription that runs on a schedule deadlocking with another process. If the subscription deadlocks then it would be ok to [...]

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• SQL Performance Analyzer

  Any activity that may impact a statement's execution plan is a candidate for using SPA to investigate the possible consequences - both good and bad. Steve Callan discusses the workflow and provides a working example.

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• Semantic algorithms

  - by Mythago

  I have a more theoretical than practical question. I'll start with an example - when I get an email and open it on my iPad, there is a feature, which recognizes the timestamp from the text and offers me to create an event in the calendar. Simply told, I want to know theoretically how it's done - I believe it's some kind of semantic parsing, and I would like if someone could point me to some resources, where I can read more about this.

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• Extend gnome-control-center’s list of keyboard layouts

  - by MPi

  While looking for my problem of Keyboad layout: In 13.10, modified symbols do not apply, I noticed that gnome-control-center region layouts has a list of keyboard layouts that is not directly related to the ones found in /usr/share/X11/xkb/symbols. For example, on my German machine it lists ‘Englisch (Colemak)’ and ‘English (Britisch, Colemak)’ as keyboard layouts, both are not found in the original files, but obviously translations. So, my question is: Where does gnome-control-center get its list of keyboard layouts from? Can it be extended?

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• Best way to solve tile drawing in 2D side scroller?

  - by TheCompBoy

  What i still can't figure out is which would be the more sane way / easier and faster way to draw the map on the screen.. I mean i will use many tiles for my maps in my side scroller.. But problem is should i make the maps in whole images like one .png file for each map (Example) or should i draw the tiles by code like a for loop in c++.. Which way is most recomended or where can i read about which way is the best.

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• How to hide the admin login form?

  - by John Doe

  In my website there are no accounts except for those of moderators and administrators. That's why I don't want to show the login form to everyone but to these people. I thought of using a weird URL for the login form like www.example.com/1a79a4d60de6718e8e5b326e338ae533 that only admins and mods would know. But it's a quite impractical solution, besides if someone would want to login in another computer and forgets this URL, then is unable to. Is there any more effective way?

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• Drawing flaming letters in 3D with OpenGL ES 2.0

  - by Chiquis

  I am a bit confused about how to achieve this. What I want is to "draw with flames". I have achieved this with textures successfully, but now my concern is about doing this with particles to achieve the flaming effect. Am I supposed to create a path along which I should add many particle emitters that will be emitting flame particles? I understand the concept for 2D, but for 3D are the particles always supposed to be facing the user? Something else I'm worried about is the performance hit that will occur by having that many particle emitters, because there can be many letters and drawings at the same time, and each of these elements will have many particle emitters. More detailed explanation: I have a path of points, which is my model. Imagine a dotted letter "S" for example. I want make the "S" be on fire. The "S" is just an example it can be a circle, triangle, a line, pretty much any path described by my set of points. For achieving this fire effect I thought about using particles. So I am using a program called "Particle Designer" to create a fire style particle emitter. This emitter looks perfect on 2D on the iphone screen dimensions. So then I thought that I could probably draw an S or any other figure if i place many particle emitters next to each other following the path described. To move from the 2D version to the 3D version I thought about, scaling the emitter (with a scale matrix multiplication in its model matrix) and then moving it to a point in my 3D world. I did this and it works. So now I have 1 particle emitter in the 3D world. My question is, is this how you would achieve a flaming letter? Is this too inefficient if i expect to have many flaming paths on my world? Am i supposed to rotate the particle's quad so that its always looking at the user? (the last one is because i noticed that if u look at it from the side the particles start to flatten out)

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• What is the process of planning software called? Or what is the job title of someone who does software planning?

  - by Ryan

  For example, let's say a non-technical person comes to me with their rough initial specification. And I sit down with them over a couple weeks and help them hone, formalize and better plan the application that they want built. What is this called? Information architecture, software architecture, specification writing, software planning, requirements analysis? What is the best, most recognizable term for this?

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