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• What service or software should I use to serve advertising on a site with about 120k monthly page views?

  - by JasonBirch

  I have a site that is generating about 120k monthly page views and is being hosted on a shared FreeBSD server where I have access to PHP and MySQL. I am using some custom PHP server-side scripts that give each of my ad networks (AdSense, Tribal Fusion, etc) an adjustable percentage of impressions in each of the ad positions on my pages. I am looking for a better way of managing and measuring the delivery of these ads, and would also like to be able to take direct placements and provide statistics to the clients. I am looking at options including OpenX self-hosted, OpenX community, and Google DoubleClick for Publishers Small Business (DFP), but am having difficulty determining which one will best meet my needs. They all seem to have pretty steep learning curves compared to my simple scripts. What I have taken away so far as the benefit of self-hosting is that I don't have to pay for the service if I exceed a maximum number of ad impressions, while both OpenX Community and DFP have free impression limits. Of course, if I was doing those kind of numbers I'd need to upgrade my hosting account, but I'm not sure even at that point whether it would be cheaper to serve the ads myself than pay for a premium service. Apart from this, I really need insights into what features differentiate these services, why I might want to choose one over another, and if there are any other competing products or service of the same quality that I should look into. Answers from webmasters who have used both (or all three) services and can talk to usability and ease of ad management would be highly appreciated.

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• Random generation of interesting puzzle levels?

  - by monsterfarm

  I'm making a Sokoban-like game i.e. there's a grid that has some crates on it you can push and you have to get the crates on crosses to win the level (although I'm going to add some extra elements to it). Are there any general algorithms or reading material I can look at for how I could go about generating interesting (as in, not trivial to solve) levels for this style of game? I'm aware that random level generators exist for Sokoban but I'm having trouble finding the algorithm descriptions. I'm interested in making a game where the machine can generate lots of levels for me, sorted by difficulty. I'm even willing to constrain the rules of the game to make the level generation easier (e.g. I'll probably limit the grid size to about 7x7). I suspect there are some general ways to do level generation here as I've seen e.g. Traffic Jam-like games (where you have to move blocks around the free some block) with 1000s of levels where each one has a unique solution. One idea I had was to generate a random map in its final state (i.e. where all crates are on top of their crosses) and then the computer would pull (instead of push) these crates around to create a level. The nice property here is that we know the level is solvable. However, I'd need some heuristics to ensure the level was interesting.

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• On Developing Web Services with Global State

  - by user74418

  I'm new to web programming. I'm more experienced and comfortable with client-side code. Recently, I've been dabbling in web programming through Python's Google App Engine. I ran into some difficulty while trying to write some simple apps for the purposes of learning, mainly involving how to maintain some kind of consistent universally-accessible state for the application. I tried to write a simple queueing management system, the kind you would expect to be used in a small clinic, or at a cafeteria. Typically, this is done with hardware. You take a number from a ticketing machine, and when your number is displayed or called you approach the counter for service. Alternatively, you could be given a small pager, which will beep or vibrate when it is your turn to receive service. The former is somewhat better in that you have an idea of how many people are still ahead of you in the queue. In this situation, the global state is the last number in queue, which needs to be updated whenever a request is made to the server. I'm not sure how to best to store and maintain this value in a GAE context. The solution I thought of was to keep the value in the Datastore, attempt to query it during a ticket request, update the value, and then re-store it with put. My problem is that I haven't figured out how to lock the resource so that other requests do not check the value while it is in the middle of being updated. I am concerned that I may end up ticket requests that have the same queue number. Also, the whole solution feels awkward to me. I was wondering if there was a more natural way to accomplish this without having to go through the Datastore. Can anyone with more experience in this domain provide some advice on how to approach the design of the above application?

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• Building a List of All SharePoint Timer Jobs Programmatically in C#

  - by Damon

  One of the most frustrating things about SharePoint is that the difficulty in figuring something out is inversely proportional to the simplicity of what you are trying to accomplish.  Case in point, yesterday I wanted to get a list of all the timer jobs in SharePoint.  Having never done this nor having any idea of exactly how to do this right off the top of my head, I inquired to Google.  I like to think my Google-fu is fair to good, so I normally find exactly what I'm looking for in the first hit.  But on the topic of listing all SharePoint timer jobs all it came up with a PowerShell script command (Get-SPTimerJob) and nothing more. Refined search after refined search continued to turn up nothing. So apparently I am the only person on the planet who needs to get a list of the timer jobs in C#.  In case you are the second person on the planet who needs to do this, the code to do so follows: SPSecurity.RunWithElevatedPrivileges(() => {    var timerJobs = new List();    foreach (var job in SPAdministrationWebApplication.Local.JobDefinitions)    {       timerJobs.Add(job);    }    foreach (SPService curService in SPFarm.Local.Services)    {       foreach (var job in curService.JobDefinitions)       {          timerJobs.Add(job);       }     } }); For reference, you have the two for loops because the Central Admin web application doesn't end up being in the SPFarm.Local.Services group, so you have to get it manually from the SPAdministrationWebApplication.Local reference.

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• Use LINQ to query nested OData collection

  - by Kyle Russell

  I'm playing around with the new Netflix OData feed (http://odata.netflix.com/Catalog/) and having some issues. I'm trying to learn LINQ at the same time but having difficulty doing what I thought was going to be quite simple. I'd like to return a list of Titles that match a given Genre. The Titles object contains a collection of Genres. I'm not sure how to write this query. My attempt below does not appear to work using LINQPad. from t in Titles where t.Genres.Name.Contains("ABC") select t

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• iPad UIWebView PDF rendering is giving me weird visual artifacts

  - by ashwhite

  I am having some difficulty using a UIWebView to render PDF files on the iPad. Everything works fine in portrait mode, but turning the device to landscape produces strange visual quirkiness. Zooming in (but not out) even the slightest will correct it, but obviously that's not an ideal workaround. The issue occurs with any PDF file (I have tried several, all stored locally in the bundle, not retrieved from the web). I also created a clone of the project for iPhone, which seems to work just fine, so the problem is iPad-specific. The problem occurs both in the simulator as well as on a physical iPad. Screenshot http://dev.boxkite.net/images/ipad/ipad-pdf.png Code NSString* filePath = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"pdf"]; NSData* data = [NSData dataWithContentsOfFile:filePath]; [self.webView loadData:data MIMEType:@"application/pdf" textEncodingName:@"UTF-8" baseURL:nil]; Thanks so much for your time.

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• netbeans 6.8 php, xdebug, mamp - cannot establish a connection

  - by Mike

  I'm having no luck whatsoever with debuggers either on Zend Studio or NetBeans. I cannot believe the difficulty I'm having with these IDE's. I've read all the prior questions on netbeans-xdebug problems. According to those answers, my configuration is correct. Nonetheless, when I try to run xdebug, NetBeans hangs. I cancel the connection and get the popup dialog: "There is no connection, blah blah blah..." Here's my php.ini [xdebug] ; Xdebug config for Mac OS X and NetBeans IDE zend_extension=/Applications/MAMP/bin/php5/lib/php/extensions/no-debug-non-zts-20060613/xdebug.so xdebug.remote_enable=on xdebug.remote_handler=dbgp xdebug.remote_mode=req xdebug.remote_host=127.0.0.1 xdebug.remote_port=9000 xdebug.idekey=netbeans-xdebug In NetBeans preferences, my session ID = netbeans-xdebug. I tried xdebug.idekey="netbeans-xdebug" That made no difference. I restarted the web server every time. Anyone have any other suggestions I might try? Thanks.

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• Delphi 7 and Excel 2007 Open File Error

  - by Traci

  I am having difficulty opening a EXCEL 2007 in Delphi 7 It works for Office 2003 and below but the wonderful people at microsoft have sent an update or something and the delphi app fell over just earlier this month. oE := GetActiveOleObject('Excel.Application'); oE.Workbooks.Open(Filename:=sFilename, UpdateLinks:=false, ReadOnly:=true); //Error I get the following error: 'c:\Temp\Book1.xls' could not be found. Check the spelling of the file name, and verify that the file location is correct.'#$A#$A'If you are trying to open the file from your list of most recently used files, make sure that the file has not been renamed, moved, or deleted' Yet if I run the same command in VBA there is no problem.

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• Change UIImageView Center - iPhone

  - by CccTrash

  I am trying to make a little ball that rolls around based on the accelerometer values in the iPhone. This code will not build: -(void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { if(difficulty == @"easy") { CGFloat newX = (CGFloat)(ball.center.x + (CGFloat)acceleration.x); CGFloat newY = (CGFloat)(ball.center.y + (CGFloat)acceleration.y); ball.center.x = newX; ball.center.y = newY; } } It gives me an lvalue required as left operand of assignment error. I've tried 100 different things and I fail every time...This is just the latest failure. Anyone have any insight?

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• C#, Lotus Interop: Getting Message Information

  - by tsilb

  I'm using Interop.Domino.dll to retrieve E-mails from a Lotus "Database" (Term used loosely). I'm having some difficulty in retrieving certain fields and wonder how to do this properly. I've been using NotesDocument.GetFirstItem to retrieve Subject, From and Body. My issues in this regard are thus: How do I retrieve Reply-To address? Is there a list of "Items" to get somewhere? I can't find it. How do I retrieve friendly names for From and Reply-To addresses? When I retrieve Body this way, it's formatted wierdly with square bracket sets ([]) interspersed randomly across the message body, and parts of the text aren't where I expect them. Related code: string ActualSubject = nDoc.GetFirstItem("Subject").Text, ActualFrom = nDoc.GetFirstItem("From").Text, ActualBody = nDoc.GetFirstItem("Body").Text;

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• How to change the datasource on a YUI datagrid after creation

  - by Simon

  I am using the Yahoo DataTable for which the API is here. I am having difficulty changing the data once I have rendered the grid once. I am using jQuery to get data via AJAX, or from a client side data island and need to put this back into the grid. There is no setDataSource method in the DataTable API, and changing 'dataSource.liveData' does not update the grid. // does not work dataTable.dataSource.liveData = [ {name:"cat"}, {name:"dog"}, {name:"mouse"}; The example I am basing my code on is the basic LocalDataSource example. How can I update the data source without having to completely recreate the table. I do NOT want to use the YUI datasources that make Async calls. I need to know how I can do this 'manually'.

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• Translate query to NHibernate

  - by Rob Walker

  I am trying to learn NHibernate, and am having difficulty translating a SQL query into one using the criteria API. The data model has tables: Part (Id, Name, ...), Order (Id, PartId, Qty), Shipment (Id, PartId, Qty) For all the parts I want to find the total quantity ordered and the total quantity shipped. In SQL I have: select shipment.part_id, sum(shipment.quantity), sum(order.quantity) from shipment cross join order on order.part_id = shipment.part_id group by shipment.part_id Alternatively: select id, (select sum(quantity) from shipment where part_id = part.id), (select sum(quantity) from order where part_id = part.id) from part But the latter query takes over twice as long to execute. Any suggestions on how to create these queries in (fluent) NHibernate? I have all the tables mapped and loading/saving/etc the entities works fine.

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• Reference from UITableViewCell to UITableView to UINavigationController

  - by Nick

  If the user taps and holds on a Foo table view cell for 2 seconds, a modal view should be shown. The modal view is also displayed when a new Foo is added to the cell. The modal view's delegate protocol is implemented by the parent UITableView subclass. My tap and hold detection code is in the Foo UITableViewCell class. I'm having difficulty referencing the parent tableview's navigation controller to display the modal view. FooModalViewController *modalController = [[FooModalViewController alloc] initWithNibName:@"FooModalViewController" bundle:nil]; FooTableViewController *tableView = (FooTableViewController *) self.superview; foo.delegate = tableView; Seems OK but I'm having problems referencing the navigation controller that contains the tableview.. The code below builds OK but throws an exception - NSOBject DoesNotRecognizeSelector. UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:modalController]; [[tableView.navigationController] presentModalViewController:navigationController animated:YES]; I think that perhaps my design is flawed..?

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• in visual studio 2008, when I stop debugging an asp classic website visual studio always crashes

  - by yamspog

  We are running visual studio 2008 (with the service pack) and having troubles when we are debugging an asp classic website. We can attach to the w3p process and debug just fine. breakpoints work, we can view variable values. The difficulty arises when it comes time to detach or stop the debugger. Every time we take either approach (detach or stop the debugger) we get a series of crashes from Visual studio. Has anyone seen anything like this? Any suggestions on what to look at?

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• Session resume problem with Strophe attach and Ejabberd

  - by Adil

  I'm having a lot of difficulty getting strophe's 'attach()' function working. I am working on a social network where users will be surfing pages and at the same time keep their chat connection on. I don't want to reconnect/reauthorize on every page so as per this link (http://groups.google.com/group/strophe/browse_thread/thread/430da5e788278f3a/93c48c88164f382f?show_docid=93c48c88164f382f&fwc=1) i am storing the SID and RID into a cookie onunload. On the next page when i try to use the new SID and RID (after incrementing it by 1) my session is already destroyed. Ejabberd reports "Error on HTTP put. Reason: bad_key" WTF is happening?

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• Can't find my.cnf file so I can enable InnoDB - is there another way?

  - by Jared

  Hey all, I am trying to Magento running on a share server, and am having difficulty. When I look at the engines in PHPmyAdmin, I get InnoDB DISABLED. So I look in /etc/, and there is no my.cnf file. There is a ftpquota and a .boxtrapper file, but nothing else. I know I can probably create a new one, but this is a server that hosts a lot of sites. I'm afraid I will mess someone up. So is there a way to maybe create a my.cnf file that only enable InnoDB and doesn't effect anything else? Or is there another way to enable it?

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• Trouble getting search results using MGTwitterEngine

  - by cannyboy

  I'm using a version of Matt Gemmell's MGTwitterEngine, and I'm trying to get some results from the getSearchResultsForQuery method. // do a search [_engine getSearchResultsForQuery:@"#quote"]; // delegate method for handling result - (void)searchResultsReceived:(NSArray *)searchResults forRequest:(NSString *)connectionIdentifier { if ([searchResults count] > 0) { NSDictionary *singleResult = [searchResults objectAtIndex:1]; NSString *text = [singleResult valueForKey:@"text"]; NSLog(@"Text at Index one: \n %@", text); } } However, I never appear to get the result. In the console, I get: Request 7E4C3097-88D6-45F1-90D2-AD8205FBAAC5 failed with error: Error Domain=HTTP Code=400 "Operation could not be completed. (HTTP error 400.)" Is there a way around this? Am I implementing the delegate method right? (Also, I had difficulty installing the YAJL stuff for the engine, and wonder if that has something to do with it)

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• Protected Members of Other Instances in Scala

  - by Masterofpsi

  I just ran into a difficulty while learning Scala. I have an inheritance hierarchy that is essentially equivalent to this: class A { protected def myMethod() = println("myMethod() from A") } class B extends A { def invokeMyMethod(a: A) = a.myMethod() } But trying to compile this sample, I get the error "test.scala:7: error: method myMethod cannot be accessed in A". Coming from Java, my understanding is that protected members should be accessible at any point from a derived class, and nowhere have I seen anything that tells me that protected members in Scala are limited by instance. Does anyone have an explanation for this?

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• Use python decorators on class methods and subclass methods

  - by AlexH

  Goal: Make it possible to decorate class methods. When a class method gets decorated, it gets stored in a dictionary so that other class methods can reference it by a string name. Motivation: I want to implement the equivalent of ASP.Net's WebMethods. I am building this on top of google app engine, but that does not affect the point of difficulty that I am having. How it Would look if it worked: class UsefulClass(WebmethodBaseClass): def someMethod(self, blah): print(blah) @webmethod def webby(self, blah): print(blah) # the implementation of this class could be completely different, it does not matter # the only important thing is having access to the web methods defined in sub classes class WebmethodBaseClass(): def post(self, methodName): webmethods[methodName]("kapow") ... a = UsefulClass() a.post("someMethod") # should error a.post("webby") # prints "kapow" There could be other ways to go about this. I am very open to suggestions

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• creating own bundle - in xCode - for iPhone application

  - by sagar

  Hello ! every one. I am having some difficulty regarding creating a bundle for the application & placing files within that bundle. For Example : FaceBook has developed a bundle for iPhone applications. Same way I also want to create a bundle which can be reused for many applications. My questions are as follows. what steps should I follow to create a bundle for any kind of application ? what should be taken care while creating a bundle? Thanks in advance for sharing your knowledge. Sagar kothari.

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• Constructing a hash table/hash function.

  - by nn

  Hi, I would like to construct a hash table that looks up keys in sequences (strings) of bytes ranging from 1 to 15 bytes. I would like to store an integer value, so I imagine an array for hashing would suffice. I'm having difficulty conceptualizing how to construct a hash function such that given the key would give an index into the array. Any assistance would be much appreiated. The maximum number of entries in the hash is: 4081*15 + 4081*14 + ... 4081 = 4081((15*(16))/2) = 489720. So for example: int table[489720]; int lookup(unsigned char *key) { int index = hash(key); return table[index]; } How can I compute hash(key). I'd preferably like to get a perfect hash function. Thanks.

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• Regex for capturing numbered text list

  - by crunchyt

  I have a test list that I am trying to capture data from using a regex. Here is a sample of the text format: (1) this is a sample string /(2) something strange /(3) another bit of text /(4) the last one/ something!/ I have a Regex that currently captures this correctly, but I am having some difficulty with making it work under outlier conditions. Here is my regex /\(?\d\d?\)([^\)]+)(\/|\z)/ Unfortunately some of the data contains parentheses like this: (1) this is a sample string (1998-1999) /(2) something strange (blah) /(3) another bit of text /(4) the last one/ something!/ The substrings '(1998-1999)' and '(blah)' make it fail! Anyone care to have a crack at this one? Thank you :D

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• Managing data charts

  - by Tom Gullen

  My dbml file is just getting bigger and bigger and more unwieldy: I favoured an all-in-one approach as supposed to multiple data contexts because when I tried that it was near impossible to manage in code. I was advised it was better to have them all in one chart and the difficulty will be simply in managing this chart and not in code. The chart I've got is becoming a pain to manage, if I want to even remove a table and re-add it it sometimes takes a little while to manually find it! There isn't even a list I can find in VS2010 of the objects you have in that chart! Is there a better way of doing this?

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• Using a priority queue in Java

  - by Bharat

  Forgive me if this is a tried question, but I'm having a little difficulty figuring it out. I currently have a class Node, and each 'node' is a square in a maze. I'm trying to implement the A* algorithm, so each of these nodes will have an f-cost (int) data member inside of it. I was wondering if there's a way that I can create a priority queue of these nodes, and set up the f-cost variable as the comparator? I've looked at examples online, but all I can find are String priority queues. Can I implement Comparator for the Node class? Would this allow me to access the data member stored inside it? Many Thanks!

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• Why does Silverlight 4 Tools only give partial intellisense?

  - by Edward Tanguay

  I finally got Silverlight 4 Toolkit installed , referenced and working after the difficulty of finding the right namespace described in this question. But intellisense doesn't work fully: after I type "tk:", it doesn't pop up the various controls I have available, but if I type a control name out, e.g. DockPanel, then it works, as shown below. It will even give me intellisense after I type tk:DropPanel, which is odd. How can I get intellisense to work in all cases for the Silverlight 4 Toolkit? I can imagine I need another namespace, but this site says that this reference: is now all you need (and will be automatically used by both Visual Studio and Blend)

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