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• An XEvent a Day (24 of 31) – What is the package0.callstack Action?

  - by Jonathan Kehayias

  One of the actions inside of Extended Events is the package0.callstack and the only description provided by sys.dm_xe_objects for the object is 16-frame call stack. If you look back at The system_health Session blog post, you’ll notice that the package0.callstack Action has been added to a number of the Events that the PSS team thought were of significance to include in the Event Session. We can trigger an event that will by logged by our system_health Event Session by raising an error of severity...(read more)

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• An XEvent a Day (29 of 31) – The Future – Looking at Database Startup in Denali

  - by Jonathan Kehayias

  As I have said previously in this series, one of my favorite aspects of Extended Events is that it allows you to look at what is going on under the covers in SQL Server, at a level that has never previously been possible. SQL Server Denali CTP1 includes a number of new Events that expand on the information that we can learn about how SQL Server operates and in today’s blog post we’ll look at how we can use those Events to look at what happens when a database starts up inside of SQL Server. First...(read more)

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• How can I randomly iterate through a large Range?

  - by void

  I would like to randomly iterate through a range. Each value will be visited only once and all values will eventually be visited. For example: class Array def shuffle ret = dup j = length i = 0 while j > 1 r = i + rand(j) ret[i], ret[r] = ret[r], ret[i] i += 1 j -= 1 end ret end end (0..9).to_a.shuffle.each{|x| f(x)} where f(x) is some function that operates on each value. A Fisher-Yates shuffle is used to efficiently provide random ordering. My problem is that shuffle needs to operate on an array, which is not cool because I am working with astronomically large numbers. Ruby will quickly consume a large amount of RAM trying to create a monstrous array. Imagine replacing (0..9) with (0..99**99). This is also why the following code will not work: tried = {} # store previous attempts bigint = 99**99 bigint.times { x = rand(bigint) redo if tried[x] tried[x] = true f(x) # some function } This code is very naive and quickly runs out of memory as tried obtains more entries. What sort of algorithm can accomplish what I am trying to do? [Edit1]: Why do I want to do this? I'm trying to exhaust the search space of a hash algorithm for a N-length input string looking for partial collisions. Each number I generate is equivalent to a unique input string, entropy and all. Basically, I'm "counting" using a custom alphabet. [Edit2]: This means that f(x) in the above examples is a method that generates a hash and compares it to a constant, target hash for partial collisions. I do not need to store the value of x after I call f(x) so memory should remain constant over time. [Edit3/4/5/6]: Further clarification/fixes.

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• VBA Range.Rows.Count giving unexpected results

  - by Jeffrey

  I have a Range variable that contains an address - $2:$2,$4:$205,$214:$214 - (3 groups of rows). I would like to get the count of all the rows in that range. However, range.Count gives me the count of all the cells (50,000~) and range.Rows.Count only return 1 - the count of all the rows in the first group. How do I get the count of all the rows Thanks

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• Browser sends http request with RANGE

  - by nute

  I have a local testing environment in a Fedora virtual machine. Strangely, resources (css and js files) don't seem to work. Looking at Firebug, I see that the browser sends the HTTP request with "Range bytes=0-". The server responds with either an empty 200OK or an empty 206 Partial Content. Here is an example: Response Headers Date Mon, 23 Nov 2009 23:33:26 GMT Server Apache/2.2.13 (Fedora) Last-Modified Thu, 19 Nov 2009 22:58:55 GMT Etag "18-3aec-478c14dbee138" Accept-Ranges bytes Content-Length 15084 Content-Range bytes 0-15083/15084 Connection close Content-Type text/css Request Headers Host fedora.test User-Agent Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5) Gecko/20091105 Fedora/3.5.5-1.fc11 Firefox/3.5.5 Accept text/css,*/*;q=0.1 Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 300 Connection keep-alive Referer http://fedora.test/pictures/ Cookie __utma=26341546.1613992749.1258504422.1258569125.1258752550.4; __utmz=26341546.1258504422.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); PHPSESSID=tqf8jfmc77qihe97rl4tmhq685 Range bytes=0- If-Range "18-3aec-478c14dbee138" I don't know if the browser is sending the wrong request, or if it's the server that is doing this. Request made to the outside (such as google analytics) are working fine. This is running in Fedora 11 in VirtualBox. Apache. PHP. The files are being served through the "shared folders" feature of VirtualBox (could it be related?). No error logs could help me.

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• Need to set cursor position to the end of a contentEditable div, issue with selection and range obje

  - by DavidR

  I'm forgetting about cross-browser compatibility for the moment, I just want this to work. What I'm doing is trying to modify a script (and you probably don't need to know this) located at typegreek.com The basic script is found here. Basically what it does is when you type in characters, it converts the character your are typing into greek characters and prints it onto the screen. What I'm trying to do is to get it to work on contentEditable div's (It only works for Textareas) My issue is with this one function: The user types a key, it get's converted to a greek key, and goes to a function, it gets sorted through some if's, and where it ends up is where I can add div support. Here is what I have so far, myField is the div, myValue is the greek character. //Get selection object... var userSelection if (window.getSelection) {userSelection = window.getSelection();} else if (document.selection) {userSelection = document.selection.createRange();} //Now get the cursor position information... var startPos = userSelection.anchorOffset; var endPos = userSelection.focusOffset; var cursorPos = endPos; //Needed later when reinserting the cursor... var rangeObj = userSelection.getRangeAt(0) var container = rangeObj.startContainer //Now take the content from pos 0 -> cursor, add in myValue, then insert everything after myValue to the end of the line. myField.textContent = myField.textContent.substring(0, startPos) + myValue + myField.textContent.substring(endPos, myField.textContent.length); //Now the issue is, this updates the string, and returns the cursor to the beginning of the div. //so that at the next keypress, the character is inserted into the beginning of the div. //So we need to reinsert the cursor where it was. //Re-evaluate the cursor position, taking into account the added character. var cursorPos = endPos + myValue.length; //Set the caracter position. rangeObj.setStart(container,cursorPos) Now, this works only as long as I don't type more than the size of the original text. Say I had 30 characters in the div before hand. If I type more than that 30, it adds character 31, but places the cursor back at 30. I can type character 32 at pos.31, then character 33 at pos.32, but if I try to put character 34 in, it adds the character, and sets the cursor back at 32. The issue is that the function for adding the new character screws up if cursorPos is greater than what is defined in the range. Any ideas?

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• Changing the cell range of conditional formatting in LibreOffice Calc

  - by Simon Lundberg

  Is there any way of changing the range of conditional formatting in LibreOffice Calc (version 3.6)? I have a set applied already to a range of cells, but there is no obvious way of changing which cells a given set of conditional formatting is applied to. I either have to copy and paste the formatting, which results in multiple entries in the conditional formatting (which makes it difficult to manage), or delete the entire thing and create a new one every single time I want to change the range of cells. Is there a better way? link to screenshot

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• Limited RGB range due to HDMI cable?

  - by Cedric Reichenbach

  I have a NVidia GeForce GTX 660, connected to a Samsung SyncMaster S24B350 through a HDMI cable. On my computer, I'm running both, Windows 8 and Linux Mint. I think that something might prevent my system from using the whole RGB spectrum, since bright colors seem to vanish into white under standard settings. However, under Linux I could switch to a limited color range mode (16-235) and suddenly, the image looked much better. Is it possible that the HDMI cable limits color range (since it was originally inteded for TVs)? Is there a way of switching to limited color range mode in Windows 8 as well?

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• algorithm to use to return a specific range of nodes in a directed graph

  - by GatesReign

  I have a class Graph with two lists types namely nodes and edges I have a function List<int> GetNodesInRange(Graph graph, int Range) when I get these parameters I need an algorithm that will go through the graph and return the list of nodes only as deep (the level) as the range. The algorithm should be able to accommodate large number of nodes and large ranges. Atop this, should I use a similar function List<int> GetNodesInRange(Graph graph, int Range, int selected) I want to be able to search outwards from it, to the number of nodes outwards (range) specified. So in the first function, I expect it to return the nodes placed in the blue box. The other function, if I pass the nodes as in the graph with a range of 1 and it starts at node 5, I want it to return the list of nodes that satisfy this criteria (placed in the orange box)

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• IBM Expands Power 7 Line to Entry-Level and Mid-Range Blade Servers

  New processors allow for expandability and improved power efficiency compared to the previous generation.

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• Adding Liebert UPS (Uninterrupted power supply) psi Range

  - by Theuns

  I have an Liebert PowerSure PSI Line-Interactive UPS, 1000VA (DISCONTINUED) and using ubuntu lts 12.4 presice . I've used it on windows and it came up as and Notebooks battery. Is there support for these type of devices? any help Plz. I've tried the Multi link software on the emerson site and found 'ML_36_004_Linux_x86.bin' witch would be the software when using the 2.4.18+ Kernel . is it possible to use this file? Thank u

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• Filling array with numbers from given range so that sum of adjacent numbers is square number

  - by REACHUS

  Problem: Fill all the cells using distinct numbers from <1,25 set, so that sum of two adjacent cells is a square number. (source: http://grymat.im.pwr.wroc.pl/etap1/zad1etp1213.pdf; numbers 20 and 13 have been given) I've already solved this problem analytically and now I would like to approach it using an algorithm. I would like to know how should I approach these kind of problems in general (not a solution, just a point for me to start).

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• XNA Skinned Model - Keyframe.Bone out of range exception

  - by idlackage

  I'm getting an IndexOutOfRangeException on this line of AnimationPlayer.cs: boneTransforms[keyframe.Bone] = keyframe.Transform; I don't get what it's really referring to. The error happens when keyframe.Bone is 14, but I have no idea what that's supposed to mean. The 14th bone of my model? What would that even be? I read this thread, but nothing there seemed to work. I don't have many bones, stray edges/verts, unassigned verts, unparented/non-root bones, or bones with dots in the name. What else can I be missing? Thank you for any help!

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• C++: Checking if an object faces a point (within a certain range)

  - by bojoradarial

  I have been working on a shooter game in C++, and am trying to add a feature whereby missiles shot must be within 90 degrees (PI/2 radians) of the direction the ship is facing. The missiles will be shot towards the mouse. My idea is that the ship's angle of rotation is compared with the angle between the ship and the mouse (std::atan2(mouseY - shipY, mouseX - shipX)), and if the difference is less than PI/4 (45 degrees) then the missile can be fired. However, I can't seem to get this to work. The ship's angle of rotation is increased and decreased with the A and D keys, so it is possible that it isn't between 0 and 2*PI, hence the use of fmod() below. Code: float userRotation = std::fmod(user->Angle(), 6.28318f); if (std::abs(userRotation - missileAngle) > 0.78f) return; Any help would be appreciated. Thanks!

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• More efficient in range checking

  - by Mob

  I am going to use a specific example in my question, but overall it is pretty general. I use java and libgdx. I have a ship that moves through space. In space there is debris that the ship can tractor beam in and and harvest. Debris is stored in a list, and the object contains it own x and y values. So currently there is no way to to find the debris's location without first looking at the debris object. Now at any given time there can be a huge (1000+) amount of debris in space, and I figure that calculating the distance between the ship and every single piece of debris and comparing it to maximum tractor beam length is rather inefficient. I have thought of dividing space into sectors, and have each sector contain a list of every object in it. This way I could only check nearby sectors. However this essentially doubles memory for the list. (I would reference the same object so it wouldn't double overall. I am not CS major, but I doubt this would be hugely significant.) This also means anytime an object moves it has to calculate which sector it is in, again not a huge problem. I also don't know if I can use some sort of 2D MAP that uses x and y values as keys. But since I am using float locations this sounds more trouble than its worth. I am kind of new to programming games, and I imagined there would be some eloquent solution to this issue.

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• Accepting a numerical range in a function call

  - by dekpos

  I have encountered two ways of doing it: void foo(int from, int to); /* 'from' inclusive, 'to' exclusive */ void foo(int startIndex, int rangelength); Has one style historically been preferred over the other? If so, was it just a matter of convention or was it due to some deeper underlying reason? I'm currently programming in Java and noticed that the Arrays class uses the former style. The exclusivity of the to argument felt somewhat unintuitive to me, which led me to ask this question.

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• SEO Companies Selling a Range of Products

  By launching your web browser and having a glance at the websites and homepages of the leading SEO companies over the net, you would find a lot of packages as well as custom products which have been prepared for a variety of web purposes and it is essential to know what packages are to be chosen and purchased which would lead to some successful and great online results. As an example, when your site is relatively new and you have just registered a domain name a couple of weeks ago, buying some link building bundles could be recommended since...

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• Efficient algorithm to find a the set of numbers in a range

  - by user133020

  If I have an array of sorted numbers and every object is one of the numbers or multiplication. For example if the sorted array is [1, 2, 7] then the set is {1, 2, 7, 1*2, 1*7, 2*7, 1*2*7}. As you can see if there's n numbers in the sorted array, the size of the set is 2n-1. My question is how can I find for a given sorted array of n numbers all the objects in the set so that the objects is in a given interval. For example if the sorted array is [1, 2, 3 ... 19, 20] what is the most efficient algorithm to find the objects that are larger than 1000 and less than 2500 (without calculating all the 2n-1 objects)?

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• 3 threads printing numbers of different range

  - by user875036

  This question was asked in an Electronic Arts interview: There are 3 threads. The first thread prints the numbers 1 to 10. The second thread prints the numbers 11 to 20. The third thread prints the numbers from from 21 to 30. Now, all three threads are running. The numbers are printed in an irregular order like 1, 11, 2, 21, 12 etc. If I want numbers to be printed in sorted order like 1, 2, 3, 4..., what should I do with these threads?

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• How to Use C Class IP Address Range

  Another very important thing that you have to remember is that your site should be able to feature in the very first page of a search engine or else it is of no use. This is how you can use C Class IP address Ranges.

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• Retrieve parent node from selection (range) in Gecko and Webkit

  - by Jason

  I am trying to add an attribute when using a wysiwyg editor that uses "createLink" command. I thought it would be trivial to get back the node that is created after the browse executes that command. Turns out, I am only able to grab this newly created node in IE. Any ideas? The following code demonstrates the issue (debug logs at bottom show different output in each browser): var getSelectedHTML = function() { if ($.browser.msie) { return this.getRange().htmlText; } else { var elem = this.getRange().cloneContents(); return $("<p/>").append($(elem)).html(); } }; var getSelection = function() { if ($.browser.msie) { return this.editor.selection; } else { return this.iframe[0].contentDocument.defaultView.getSelection(); } }; var getRange = function() { var s = this.getSelection(); return (s.getRangeAt) ? s.getRangeAt(0) : s.createRange(); }; var getSelectedNode = function() { var range = this.getRange(); var parent = range.commonAncestorContainer ? range.commonAncestorContainer : range.parentElement ? range.parentElement(): range.item(0); return parent; }; // **** INSIDE SOME EVENT HANDLER **** if ($.browser.msie) { this.ec("createLink", true); } else { this.ec("createLink", false, prompt("Link URL:", "http://")); } var linkNode = $(this.getSelectedNode()); linkNode.attr("rel", "external"); $.log(linkNode.get(0).tagName); // Gecko: "body" // IE: "a" // Webkit: "undefined" $.log(this.getSelectedHTML()); // Gecko: "<a href="http://site.com">foo</a>" // IE: "<A href="http://site.com" rel=external>foo</A>" // Webkit: "foo" $.log(this.getSelection()); // Gecko: "foo" // IE: [object Selection] // Webkit: "foo" Thanks for any help on this, I've scoured related questions on SO with no success!

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• Problem prompting user for extended permissions using showPermissionDialog in FB page tab

  - by snipe

  I have an FBML app that will use the tab as a promo tab before the full app goes live. The purpose of the promo tab is to allow users to opt in to email notifications (using the FB API sendNotifications call), so I need to prompt them to allow the app and grant extended permissions on that promo tab. The tab code is: <?php require_once 'config.php'; ?> <form id="form1"> <h1> <a href="#" clickrewriteform="form1" clickrewriteurl="http://www.mydomain.com/fanpageajax/result.php" clickrewriteid="allowapp">Step 1. Allow the Application</a> </h1> <div id="allowapp"></div> </form> <h1><a onclick="Facebook.showPermissionDialog('email');return false;"> Step 2. Grant extended permissions (intab)</a></h1> The result.php page just tags the API to ensure the allow prompt will show up. The problem is with the Step 2. Once the user has allowed the app, and they click on the Step 2, nothing happens. If they click on it twice, THEN the extended permissions dialog box popups up, but it asks them to grant extended permissions TWICE. OR.... If the user clicks on Step 1, and allows the app, and then reloads the fan page tab, they only have to click on the Step 2 link once, and the permissions show up. Anyone have any ideas? I have been beating myself in the head over this for hours.

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• Excel VBA (2007) Subtotal method of Range class failed

  - by robihot

  Hi, I'm getting a Subtotal method of Range class failed Error when i try to run a macro. Code works GREAT (no errors) when i run it using Excel 2003. Here's a snippet... 'SubTotal Sheet Range("A1").Select Selection.Subtotal GroupBy:=1, Function:=xlSum, TotalList:=Array(3, 4, 5, 6, 7, _ 8, 9), Replace:=True, PageBreaks:=False, SummaryBelowData:=True Any help would be appreciated !!!

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• Matching digits in Notepad++ extended search mode

  - by ketchup

  Notepad++'s manual is rather vague on the special character for numerical used in extended search mode. It says: \d### - Decimal value (between 000 and 255) but literally entering "\d###" doesn't match anything. What I am trying to do is to replace if VarA == 12 VarB = 1 with if VarA == 12 Var12=1 VarB=1

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• Ms. Excel: Update a value in a named range

  - by Vinzz

  Hi, I've got some cells in an Excel doc populated from a named range (data/validation/list source=MyNamedRange) My problem is the following: I'd like to change a value in the named range, then see this value updated in my whole doc. It might be performed through a macro, but I don't know how to code this. Any hints please? Thanks,

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