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  • How can I rank teams based off of head to head wins/losses

    - by TMP
    I'm trying to write an algorithm (specifically in Ruby) that will rank teams based on their record against each other. If a team A and team B have won the same amount of games against each other, then it goes down to point differentials. Here's an example: A beat B two times B beats C one time A beats D three times C bests D two times D beats C one time B beats A one time Which sort of reduces to A[B] = 2 B[C] = 1 A[D] = 3 C[D] = 2 D[C] = 1 B[A] = 1 Which sort of reduces to A[B] = 1 B[C] = 1 A[D] = 3 C[D] = 1 D[C] = -1 B[A] = -1 Which is about how far I've got I think the results of this specific algorithm would be: A, B, C, D But I'm stuck on how to transition from my nested hash-like structure to the results. My psuedo-code is as follows (I can post my ruby code too if someone wants): For each game(g): hash[g.winner][g.loser] += 1 That leaves hash as the first reduction above hash2 = clone of hash For each key(winner), value(losers hash) in hash: For each key(loser), value(losses against winner): hash2[loser][winner] -= losses Which leaves hash2 as the second reduction Feel free to as me question or edit this to be more clear, I'm not sure of how to put it in a very eloquent way. Thanks!

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  • How to solve "Broken Pipe" error when using awk with head

    - by Jon
    I'm getting broken pipe errors from a command that does something like: ls -tr1 /a/path | awk -F '\n' -vpath=/prepend/path/ '{print path$1}' | head -n 50 Essentially I want to list (with absolute path) the oldest X files in a directory. What seems to happen is that the output is correct (I get 50 file paths output) but that when head has output the 50 files it closes stdin causing awk to throw a broken pipe error as it is still outputting more rows.

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  • HTTP HEAD Request and System.Web.Mvc.FileResult

    - by mnero0429
    I'm using BITS to make requests to a ASP.NET MVC controller method named Source that returns a FileResult. I know the type FilePathResult uses HttpResponse.TransmitFile, but I don't know if HttpResponse.TransmitFile actually writes the file to the response stream regardless of the request type. My question is, does FileResult only include the header information on HEAD requests, or does it transmit the file regardless of the request type? Or, do I have to account for HEAD requests myself?

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  • What is the HEAD in git?

    - by e-satis
    There seems to be a difference between the last commit, the HEAD and the state of the file I can see in my directory. What is HEAD, what can I do with it and what mistake should I avoid?

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  • Rails: periodically use HEAD to check for page changes

    - by Chris
    I have a Rails app implementing a game, so it's expected that a player will leave a browser open at the game page. When player Alan takes an action himself, I use AJAX requests to update the game page Alan is viewing to reflect the new state. However, when another player (Bob) takes an action, I don't have (or want) a mechanism to push the change to Alan's view. I would like Alan's page to periodically poll the Rails server to find if there have been any changes since last reload, and to reload the page (either via a whole-page GET or an AJAX call) if not. In order to play nicely with caches and proxies, I'd like to do this by issuing a periodic HTTP HEAD request, get Rails to work out the timestamp of the last change (trivially available from my DB) and respond with that in the Last-Modified header; then have the client-side act on that timestamp. How can I go about doing this?

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  • Using jquery append() in <head> (in a function/class)

    - by Anonymous
    I want to use the append() function from inside the <head>, in a function to be specific, like so: function custom_img(src_img) { $("div").append("<img src='"+src_img+"'>"); } var myimg = new custom_img("test.jpg"); This is a quick example that I just wrote out. I want my function to make a new image like that every time I create a new object like this. Obviously this doesn't work, since the append() requires to be in the body (I've tried this). How would I do this?

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  • Inline code within HEAD section of ASP Web Form

    - by geekrutherford
    Today I needed to include inline code within the HEAD section of an Web Form in order to dynamically include stylesheets based on the theme set for the application.   Below is an example:      <link href="../../Resources/Themes/<% = Page.Theme %>Grid.Default.css" rel="stylesheet" type="text/css">   Upon saving and viewing the page I noted that the code was not being interpreted and instead was being treated as a string literal.  How to get around it?  Add a panel control in the HEAD section and place the links to the stylesheets as in the example above within the panel.  For whatever reason, ASP.NET does not want to interpret inline code in the HEAD section but will allow you to add .NET controls in the HEAD section.

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  • On a queue, which end is the "head"?

    - by Aidan Cully
    I had always thought that the "head" of a queue as the next element to be read, and never really questioned that usage. So a linked-list library I wrote, which is used for maintaining queues, codified that terminology: we have a list1_head macro that retrieves the first element; when using this library in a queue, this will be the first element to be removed. But a new developer on the team was used to having queues implemented the other way around. He described a queue as behaving like a dog: you insert at the head, and remove at the tail. This is a clever enough description that I feel like his usage must be more widespread, and I don't have a similarly evocative description of my preferred usage. So, I guess, there are two related questions: 1, what does the "head" of a queue mean to you? and 2, why do we use the word "head" to describe that concept?

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  • Lots of http HEAD requests originating from porn sites

    - by Don Corley
    My access log on my web server has a ton of http HEAD requests coming from porn sites. What are HEAD requests and are they doing something bad with my site? Here is an excerpt from my log: (valid request) 96.251.177.249 - - [02/Jan/2011:23:42:25 -0800] "POST /ajax HTTP/1.1" 200 0 "http://www.mywebsite.com/abc.html" "Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7" 80.153.114.208 - - [02/Jan/2011:23:43:11 -0800] "HEAD / HTTP/1.0" 302 185 "http://www.somepornsite.com" "Mozilla/5.0 (X11; U; Linux i686; it-IT; rv:1.9.0.2) Gecko/2008092313 Ubuntu/9.25 (jaunty) Firefox/3.8" 80.153.114.208 - - [02/Jan/2011:23:43:11 -0800] "HEAD /tourappxsl HTTP/1.0" 200 16871 "http://www.somepornsite.com" "Mozilla/5.0 (X11; U; Linux i686; it-IT; rv:1.9.0.2) Gecko/2008092313 Ubuntu/9.25 (jaunty) Firefox/3.8" I changed only the web addresses in this log. Thanks for any ideas, Don

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  • Google crawler not found an error inside of the <head> tag

    - by inckka
    I've found a crawler error in my site and it is listed as a page not found(404) link. Heres the broken link http://mydomain.com/blog/comments/feed/ I'm using Google web master tools and found that broken link coming from my web site pages' head tag. here's actual code where that link situated. <head> <link rel="alternate" type="application/rss+xml" title="My Domain Blog &raquo; Feed" href="http://www.my-domain.com/blog/feed/" /> </head> So Google report this link as a not found. Actually this link target is not an exact page or a location. But essential for the blog feeds. Anyway I have to fix this and remove from the Google crawler error's list. But haven't got any idea, because cannot redirect or do a 404 header with this link target. Have anyone got an idea of fixing this?

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  • Best triple head display setup

    - by dgel
    I'm currently running Ubuntu 12.04 with a darn good triple head display setup. I've got a VisionTek 900530 Radeon HD 5450 512MB DDR3 PCI Express video card that has two DVI outputs and one Mini DisplayPort that I have connected to a HDMI adapter. I'm running three identical Asus 1920x1080 monitors that each have a DVI, VGA, and HDMI input. I'm using the xorg-edgers ppa, so I'm using the open source radeon driver version 6.99.99. I tried using the ATI binary fglrx driver, but I wasn't able to get the three monitors working properly- the monitor connected via HDMI / DisplayPort wouldn't run at full resolution. The setup is almost perfect: Compiz runs fine and is quite snappy. I'm not able to use that great compiz feature where you can drag a window to the side of a display and it will half maximize. I occasionally experience display corruption weirdness with Unity and need to restart it. When I use a dropdown menu in LibreOffice it often pops the menu down in another window. For example, if I'm using the center monitor and click the Insert menu, the menu pulls down on the monitor to my right, forcing me to chase it. If I chase down the menu and choose Manual Break, the dialog appears over on my left monitor. This absurdity is mildly entertaining but has lost its novelty. I've decided to build a new system and have spared no expense- latest i7 processor, SSD, etc. I really like the performance of the Nvidia binary drivers, so I put two ZOTAC ZT-40707-10L GeForce GT 440 in the system, figuring I'd have four DVI outputs and an awesome triple (or even eventually quad) head setup. Unfortunately it appears that I didn't do sufficient research before my purchase. It seems that Nvidia TwinView only supports two monitors on one card (I guess that's why they call it TwinView...). I messed around with running two X servers, but I really don't want that- being able to drag windows to any monitor is critical. It doesn't sound like Xinerama is an option because from what I understand it simply doesn't support Compiz. I've seen a BaseMosaic option that can be used with the Nvidia drivers that appears to support an almost unlimited number of heads- unfortunately me cheap little cards don't support it. I'm also not sure whether you'll still have all nice maximizing and snapping that TwinView provides, or whether Ubuntu will only see it as one massive display. I put my old trusty ATI card into my new system and installed 12.10. I'm using the opensource radeon drivers again because even in 12.10 I can't get the fglrx binary drivers to do triple head. Unfortunately, even with an unbelievably powerful system the experience is extremely sluggish (much more so than my experience in 12.04). The menu scattering problem appears to be fixed, but I get a lot of nasty Unity display corruption. So finally, my question is this: What hardware / drivers should I use? I'm willing to buy (almost) any video card(s). I have two PCI-Express 3.0 slots on my motherboard (which has an integrated Intel HD card). I'm willing to use ATI or Nvidia cards and willing to run Ubuntu 12.04.1 or 12.10. I'm not a gamer, but do want beautiful and snappy Compiz effects. Does anyone out there have the perfect triple head setup in 12.04 or 12.10? What hardware / drivers are you using? I have those two Nvidia cards but will probably be returning them unless someone knows a way to use them together for a triple head setup. Since I'm having pretty good luck with a single ATI card providing three displays, should I just buy a beefier one with the hopes that it will fix the horrible sluggishness I'm experiencing in 12.10?

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  • Link List Problem,

    - by david
    OK i have a problem with a Link List program i'm trying to Do, the link List is working fine. Here is my code #include <iostream> using namespace std; struct record { string word; struct record * link; }; typedef struct record node; node * insert_Node( node * head, node * previous, string key ); node * search( node *head, string key, int *found); void displayList(node *head); node * delete_node( node *head, node * previous, string key); int main() { node * previous, * head = NULL; int found = 0; string node1Data,newNodeData, nextData,lastData; //set up first node cout <<"Depature"<<endl; cin >>node1Data; previous = search( head, node1Data, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, node1Data); cout <<"Depature inserted"<<endl; //insert node between first node and head cout <<"Destination"<<endl; cin >>newNodeData; previous = search( head, newNodeData, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, newNodeData); cout <<"Destinationinserted"<<endl; //insert node between second node and head cout <<"Cost"<<endl; cin >>newNodeData; previous = search( head, newNodeData, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, newNodeData); cout <<"Cost inserted"<<endl; cout <<"Number of Seats Required"<<endl; //place node between new node and first node cin >>nextData; previous = search( head, nextData, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, nextData); cout <<"Number of Seats Required inserted"<<endl; //insert node between first node and head cout <<"Name"<<endl; cin >>newNodeData; previous = search( head, newNodeData, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, newNodeData); cout <<"Name inserted"<<endl; //insert node between node and head cout <<"Address "<<endl; cin >>newNodeData; previous = search( head, newNodeData, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, newNodeData); cout <<"Address inserted"<<endl; //place node as very last node cin >>lastData; previous = search( head, lastData, &found); cout <<"Previous" <<previous<<endl; head = insert_Node(head, previous, lastData); cout <<"C"<<endl; displayList(head); char Ans = 'y'; //Delete nodes do { cout <<"Enter Keyword to be delete"<<endl; cin >>nextData; previous = search( head, nextData, &found); if (found == 1) head = delete_node( head, previous,nextData); displayList(head); cout <<"Do you want to Delete more y /n "<<endl; cin >> Ans; } while( Ans =='y'); int choice, i=0, counter=0; int fclass[10]; int coach[10]; printf("Welcome to the booking program"); printf("\n-----------------"); do{ printf("\n Please pick one of the following option:"); printf("\n 1) Reserve a first class seat on Flight 101."); printf("\n 2) Reserve a coach seat on Flight 101."); printf("\n 3) Quit "); printf("\n ---------------------------------------------------------------------"); printf("\nYour choice?"); scanf("%d",&choice); switch(choice) { case 1: i++; if (i <10){ printf("Here is your seat: %d " , fclass[i]); } else if (i = 10) { printf("Sorry there is no more seats on First Class. Please wait for the next flight"); } break; case 2: if (i <10){ printf("Here is your Seat Coach: %d " , coach[i]); } else if ( i = 10) { printf("Sorry their is no more Seats on Coach. Please wait for the next flight"); } break; case 3: printf("Thank you and goodbye\n"); //exit(0); } } while (choice != 3); } /******************************************************* search function to return previous position of node ******************************************************/ node * search( node *head, string key, int *found) { node * previous, * current; current = head; previous = current; *found = 0;//not found //if (current->word < key) move through links until the next link //matches or current_word > key while( current !=NULL) { //compare exactly if (key ==current->word ) { *found = 1; break; } //if key is less than word else if ( key < current->word ) break; else { //previous stays one link behind current previous = current; current = previous -> link; } } return previous; } /******************************************************** display function as used with createList ******************************************************/ void displayList(node *head) { node * current; //current now contains the address held of the 1st node similar //to head current = head; cout << "\n\n"; if( current ==NULL) cout << "Empty List\n\n"; else { /*Keep going displaying the contents of the list and set current to the address of the next node. When set to null, there are no more nodes */ while(current !=NULL) { cout << current->word<<endl; current = current ->link; } } } /************************************************************ insert node used to position node (i) empty list head = NULL (ii) to position node before the first node key < head->word (iii) every other position including the end of the list This is done using the following steps (a) Pass in all the details to create the node either details or a whole record (b) Pass the details over to fill the node (C) Use the if statement to add the node to the list **********************************************************/ node * insert_Node( node * head, node * previous, string key ) { node * new_node, * temp; new_node = new node; //create the node new_node ->word = key; new_node -> link = NULL; if (head == NULL || key < head->word ) //empty list { //give address of head to temp temp = head; //head now points to the new_node head = new_node; //new_node now points to what head was pointing at new_node -> link = temp; } else { //pass address held in link to temp temp = previous-> link; //put address of new node to link of previous previous -> link = new_node; //pass address of temp to link of new node new_node -> link = temp; } return head; } node * delete_node( node *head, node * previous, string key) { /* this function will delete a node but will not return its contents */ node * temp; if(key == head->word) //delete node at head of list { temp = head; //point head at the next node head = head -> link; } else { //holds the address of the node after the one // to be deleted temp = previous-> link; /*assign the previous to the address of the present node to be deleted which holds the address of the next node */ previous-> link = previous-> link-> link; } delete temp; return head; }//end delete The problem i have is when i Enter in the Number 2 in the Node(Seats) i like to get a Counter Taken 2 off of 50, some thing like what i have here enter code here int choice, i=0, counter=0; int fclass[10]; int coach[10]; printf("Welcome to the booking program"); printf("\n-----------------"); do{ printf("\n Please pick one of the following option:"); printf("\n 1) Reserve a first class seat on Flight 101."); printf("\n 2) Reserve a coach seat on Flight 101."); printf("\n 3) Quit "); printf("\n ---------------------------------------------------------------------"); printf("\nYour choice?"); scanf("%d",&choice); switch(choice) { case 1: i++; if (i <10){ printf("Here is your seat: %d " , fclass[i]); } else if (i = 10) { printf("Sorry there is no more seats on First Class. Please wait for the next flight"); } break; case 2: if (i <10){ printf("Here is your Seat Coach: %d " , coach[i]); } else if ( i = 10) { printf("Sorry their is no more Seats on Coach. Please wait for the next flight"); } break; case 3: printf("Thank you and goodbye\n"); //exit(0); } } while (choice != 3); How can i get what the User enters into number of Seats into this function

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  • DIY Panoramic Head Dirt Cheap Solution for Panoramic Photos [DIY]

    - by Jason Fitzpatrick
    Professional panoramic tripod heads are quite expensive; this DIY solution is put together with scrap wood and a handful of cheap parts from the hardware store and gets the job done just as well. If you’re not looking to impress anyone and willing to sacrifice a little compactness, this simple build can save you a ton of cash. Over at Rasterweb Pete Prodoehl shares photos and video of his DIY panoramic head built out of nothing but scrap wood he had around the work shop plus a hinge, some angle brackets, and screws/nuts/bolts. All very cheap hardware store fare. Hit up the link below to see his build and sample photos. Panoramic Tripod Head [Rasterweb via Make] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • NetApp FAS270 head doesn't see disks

    - by wfaulk
    I have an FAS270C. For months, I've been running it in a split-head manner (that is, with each head serving data totally independently, and without any clustering even being enabled) in order to facilitate moving some data around. I finally got everything situated, moved all the data to one of the heads, and was trying to get clustering set back up. Now when I try to install OnTap onto the "new" head, it cannot see any of the disks in the head shelf. (That is, the shelf into which the heads are inserted.) I've booted into maintenance mode, and it shows me that the 0b adapter, which should be the adapter that that shelf and its disks should be presented on, is in "OFFLINE (physical)" state. If I try to enable it with either "storage enable adapter 0b" or "fcadmin online 0b", it waits for about 30 seconds and then says: [fci.initialization.failed:error]: Initialization failed on Fibre Channel adapter 0b. [fci.adapter.online.failed:error]: Fibre Channel adapter 0b failed to come online. There is currently nothing attached to its external 0b port. I've tried it with and without an SFP plugged into it, and with and without its internal termination switch on. The currently active head can see those disks, and can see that two of them are assigned to the other head. Before I started reconfiguring, the "new" head could see disks on that shelf. They may even be the same disks that OnTap was installed on previously. Does anyone have any idea how to proceed?

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  • Getting out of my head

    - by BenCole
    (I put this on SO, but it got a couple close votes saying it belonged here instead...) I've spent the last year as a single person team developing a rich-client application (35,000+ LoC, for what it's worth). It's currently stable and in production. However, I know that my skills were rusty at the beginning of the project, so without a doubt there are major issues to the code. At this point, most of the issues are in architecture, structure, or interactions - the easy problems, even architecture/design problems, have already been weeded out. Unfortunately, I've spent so much time with this project that I'm having a hard time thinking outside of it - approaching it from a new perspective to see the flaws deeply buried or inherent in the design. How do I step outside my head and outside my code so I can get a fresh look at this code so I can make it better? Is this less of an issue than I think it is, or is this a problem for other people as well?

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  • T420 Triple Head with Optimus

    - by Rolo
    I see that this is possible on a T520 apparently (Triple-head on a Lenovo T520), but I can't see anyone claiming it's possible on a T420. I'm running 12.04 and have Bumbleebee installed and working fine but I can't get the display port monitor to display anything. The power light flicks on, but things only render on my VGA output monitor, and Ubuntu's display settings don't detect the third monitor. I'm not concerned with power management, ie, am happy to leave set on discrete graphics in the BIOS if that helps. Is this possible? Thanks.

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  • Android threads trouble wrapping my head around design

    - by semajhan
    I am having trouble wrapping my head around game design. On the android platform, I have an activity and set its content view with a custom surface view. The custom surface view acts as my panel and I create instances of all classes and do all the drawing and calculation in there. Question: Should I instead create the instances of other classes in my activity? Now I create a custom thread class that handles the game loop. Question: How do I use this one class in all my activities? Or do I have to create a separate instance of the extended thread class each time? In my previous game, I had multiple levels that had to create an instance of the thread class and in the thread class I had to set constructor methods for each separate level and in the loop use a switch statement to check which level it needs to render and update. Sorry if that sounds confusing. I just want to know if the method I am using is inefficient (which it probably is) and how to go about designing it the correct way. I have read many tutorials out there and I am still having lots of trouble with this particular topic. Maybe a link to a some tutorials that explain this? Thanks.

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  • Android threads trouble wrapping my head around design

    - by semajhan
    I am having trouble wrapping my head around game design. On the android platform, I have an activity and set its content view with a custom surface view. The custom surface view acts as my panel and I create instances of all classes and do all the drawing and calculation in there. Question: Should I instead create the instances of other classes in my activity? Now I create a custom thread class that handles the game loop. Question: How do I use this one class in all my activities? Or do I have to create a separate thread each time? In my previous game, I had multiple levels that had to create an instance of the thread class and in the thread class I had to set constructor methods for each separate level and in the loop use a switch statement to check which level it needs to render and update. Sorry if that sounds confusing. I just want to know if the method I am using is inefficient (which it probably is) and how to go about designing it the correct way. I have read many tutorials out there and I am still having lots of trouble with this particular topic. Maybe a link to a some tutorials that explain this? Thanks.

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  • Does mod_php honor HEAD requests properly?

    - by rkulla
    The HTTP/1.1 RFC stipulates "The HEAD method is identical to GET except that the server MUST NOT return a message-body in the response." I know Apache honors the RFC but modules don't have to. My question is, does mod_php5 honor this? The reason I ask is because I just came across an article saying that PHP developers should check this themselves with: if (stripos($_SERVER['REQUEST_METHOD'], 'HEAD') !== FALSE) { exit(); } but seeing as how browsers send HEAD requests for cache checking it seems unlikely to me that no book, docs, etc., advise PHP developers to do this check. I googled a second and not much turned up, other than some people saying they try to strange things like mod_rewrite/redirect after getting HEAD requests and some old bug ticket from like 2002 claiming that mod_php still executed the rest of the script by default. So I just ran a quick test by using PECL::HTTP to run http_head('http://mysite.com/test-head-request.php'); while having: <?php error_log('REST OF SCRIPT STILL RAN'); ?> in test-head-request.php to see if the rest of the script still executed, and it didn't. I figure that should be enough to settle it, but want to get more feedback and maybe help clear up confusion for anyone else who has wondered about this. So if anyone knows off the top of their head (no pun intended) - or have any conventions they use for receiving HEAD requests, that'd be great. Otherwise, I'll grep the C source later and respond in a comment with my findings. Thanks.

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  • ASP.NET MVC Head Verb and Selenium RC

    - by Rob
    Selenium (RC) is being used to test an ASP.NET 1.1 site. When we make a request via Selenium RC (and then in turn via Firefox or other configured browser) the http verb is "HEAD". We have several form action methods that have separate POST and GET methods decorated with AcceptVerbs(HttpVerbs.Get). These methods are returning a 404 and logging a "a public action method could not be found" error message. Questions: When writing separate Get/Post action methods what is the best practice for handling the Head verb? Should we always decorate with an AcceptVerbs(HttpVerbs.Get | HttpVerbs.Head)? The only time we've seen HEAD verbs is from Selenium and from some crawlers. We created robots.txt entries for the crawlers. Does anyone know why HEAD verbs are issued via Selenium (instead of an If-Modified-Since header)? Are there mainstream crawlers that use the HEAD verb? Does it affect SEO ranking to not have it?

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  • Triple-head on a Lenovo T520

    - by codeape
    Lenovo T520 with integrated Intel HD graphics + a NVidia card (Optimus) Ubuntu 11.10 on the computer. I would like to use the built-in screen plus two external screens. This PDF indicates that it is possible to connect up to four external monitors to the laptop. The information is Windows only. I was planning to disable the NVidia card, since I have read that Linux support for Optimus is not good. Questions: Has anyone set up three monitors on NVidia hardware? Has anyone set up three monitors using Intel HD 3000? Can I expect it to work out of the box, or are there tricks I need to be aware of?

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