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  • C# delegate to Java conversion

    - by Derek
    I am in the process of converting some code from C# to Java. I have never used C# before, but it has been pretty easy up to this point. I have a line that looks like this in the C# file: coverage.createMethod = delegate (Gridpoint gp){ //Some method stuff in here, with a return objecct } What exactly is this trying to do? It seems a little bit like an inline class but I am not sure how to go about converting htis to java

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  • C++ class member functions instantiated by traits

    - by Jive Dadson
    I am reluctant to say I can't figure this out, but I can't figure this out. I've googled and searched Stack Overflow, and come up empty. The abstract, and possibly overly vague form of the question is, how can I use the traits-pattern to instantiate non-virtual member functions? The question came up while modernizing a set of multivariate function optimizers that I wrote more than 10 years ago. The optimizers all operate by selecting a straight-line path through the parameter space away from the current best point (the "update"), then finding a better point on that line (the "line search"), then testing for the "done" condition, and if not done, iterating. There are different methods for doing the update, the line-search, and conceivably for the done test, and other things. Mix and match. Different update formulae require different state-variable data. For example, the LMQN update requires a vector, and the BFGS update requires a matrix. If evaluating gradients is cheap, the line-search should do so. If not, it should use function evaluations only. Some methods require more accurate line-searches than others. Those are just some examples. The original version instantiates several of the combinations by means of virtual functions. Some traits are selected by setting mode bits that are tested at runtime. Yuck. It would be trivial to define the traits with #define's and the member functions with #ifdef's and macros. But that's so twenty years ago. It bugs me that I cannot figure out a whiz-bang modern way. If there were only one trait that varied, I could use the curiously recurring template pattern. But I see no way to extend that to arbitrary combinations of traits. I tried doing it using boost::enable_if, etc.. The specialized state information was easy. I managed to get the functions done, but only by resorting to non-friend external functions that have the this-pointer as a parameter. I never even figured out how to make the functions friends, much less member functions. The compiler (VC++ 2008) always complained that things didn't match. I would yell, "SFINAE, you moron!" but the moron is probably me. Perhaps tag-dispatch is the key. I haven't gotten very deeply into that. Surely it's possible, right? If so, what is best practice?

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  • Is there a way to find a specific file and then change into the directory containing it in one go?

    - by bergyman
    I'm looking for a way to find what I know will be a unique file, and then change into the directory containing that file. Something along the lines of: find . -name 'Subscription.java' | xargs cd Or: find . -name 'Subscription.java' -exec cd {} \; I know this won't work because it's both trying to cd supplying the entire absolute path, which contains the file, and also because xargs can't do any built in shell commands...but you get the point of what I want to accomplish.

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  • Calculate rolling / moving average in c or c++

    - by Biohazard
    I know this is achievable with boost as per: Using boost::accumulators, how can I reset a rolling window size, does it keep extra history? But I really would like to avoid using boost. I have googled and not found any suitable or readable examples. Basically I want to track the moving average of an ongoing stream of a stream of floating point numbers using the most recent 1000 numbers as a data sample. What is the easiest way to achieve this?

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  • HTTPS only on specific page with .htaccess

    - by JamWaffles
    Hi all I have a URL such as http://www.domain.com/index.php?p=register. I want to redirect that to use HTTPS (SSL) with .htaccess, but only on this, and a couple of other pages (the login page, etc), but not the entire site. The URLs don't point to directories, but are used to dynamically include different files. Can someone give me a pointer or an example of how to get a single page redirect to HTTPS please? Thanks, James

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  • Save list of CGPoints using NSUserDefaults

    - by Chris Daviduik
    I have a bunch of CGPoints from a CCTMXLayer I want to save to NSUserDefaults but cannot seem to figure out an elegant way of doing so. Originally I was hoping to save an NSDictionary with an NSMutableSet for a value containing several NSValues (valueWithCGPoint). From what I can tell neither NSMutableSet or NSValue is supported by NSUserDefaults. At this point I am considering saving the x&y values of the CGPoint as a string and just converting it back and forth as needed.

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  • Is there any way to make gcc print offending lines when it emits an error?

    - by Alex
    I have a large codebase that I've been tasked with porting to 64 bits. The code compiles, but it prints a very large amount of incompatible pointer warnings (as is to be expected.) Is there any way I can have gcc print the line on which the error occurs? At this point I'm just using gcc's error messages to try to track down assumptions that need to be modified, and having to look up every one is not fun.

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  • Is there a comprehensive list of the NHibernate event listeners and when they actually fire?

    - by snicker
    So I am looking for a nice list of NHibernate events that actually describes when they are fired, in a typical scenario. IE something like PreUpdateEventListener - Fires when an object that is already persistent is changing I currently just rifle through the source and try to figure it out, but it's kinda painful, and I figure that someone must have done this already at some point.

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  • matplotlib - changing rect colours on the fly

    - by Nick
    I am playing with matplotlib - I have a bar chart, and I want to highlight the bar which user clicks. I have a callback that goes through a rect collection (the one I got from self.axis.bar(...)) and finds out which one was clicked (looking at the coordinates). At this point I want to call something to change the colour of the current bar. Is it possible? How do I do that?

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  • Can I set a timeout for a InputStream's read() function?

    - by Zombies
    I have a DataInputStream that I obtained from a Socket. Is there any way I can set a timeout for dis.read(...)? Currently I spawn a new thread to do the read. While the parent thread does a thread.join(timeout) to wait before interrupting it. I am aware of nio, but I don't think I want to refactor that much at this point. Thanks.

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  • T4 template for Validation in MVC

    - by GibboK
    I'm using ASp.Net MVC and EF 4.3.1. Using POCO t4 template I'm able to create the POCO classes for my model but not validation. At the moment I'm using Partial Classes with MetaData for adding the annotation (leaving intact the POCO auto generated). My question: Could you point me out a tutorial, or show me an example of code or a link to a T4 template the also include automatic VALIDATION for my POCO? THanks

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  • Nutch search always returns 0 results

    - by darbour
    I have set up nutch 1.0 on a cluster. It has been setup and has successfully crawled, I copied the crawl directory using the dfs -copyToLocal and set the value of searcher.dir in the nutch-site.xml file located in the tomcat directory to point to that directory. Still when I try to search I receive 0 results. Any help would be greatly appreciated.

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  • How to detect working internet connection in C#?

    - by detariael
    I have a C# code that basically uploads a file via FTP protocol (using FtpWebRequest). I'd like, however, to first determine whether there is a working internet connection before trying to upload the file (since, if there isn't there is no point in trying, the software should just sleep for a time and check again). Is there an easy way to do it or should I just try to upload the file and in case it failed just try again, assuming the network connection was down?

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  • QR code - where can I find (free) code to embed my own generator on a web page?

    - by Robbert Huisman
    Hi, couldn't find it exactly from earlier questions, but I am probably repeating an earlier question, so apologies upfront ;-) I am looking for a simple code to embed a QR 2D code generator on a website I am building. I assume their should be some free open source code for that but I could only find paid software. Can anyone point me in the right direction? would be mostly appreciated! best regards, Robbert

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  • UITableViewCell similar to one in "Things" app

    - by Fiedorowski
    Hi im looking (but cant find) for sample app that will show me how to implement UITableView with custom UITableViewCell that is similar to one in the Things app, with smooth animation from read-only view (that hides empty cells) to editable view that shows only cells that can be edited, and custom cell with multiline input with small image. I would appreciate if someone could point me in the right direction. Im new to Cocoa/Objective-C programming but Im familiar with Object Oriented programing concepts.

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  • getting html tags from xml and echoing in php?

    - by Whitney Sarah Rogers
    I am trying to echo a result from xml into my html code form expedia. But I ran into a problem. There text is a little messed up: <areaInformation> Distances are calculated in a straight line from the property&apos;s location to the point of interest or attraction, and may not reflect actual travel distance. &lt;br /&gt;&lt;br /&gt; Distances are displayed to the nearest 0.1 mile and kilometre. &lt;p&gt;La Isla Shopping Mall - 0.5 km / 0.3 mi &lt;br /&gt;Yamil Lu&apos;um - 0.5 km / 0.3 mi &lt;br /&gt;Acuario Interactivo - 0.6 km / 0.3 mi &lt;br /&gt;Luxury Avenue - 1.5 km / 0.9 mi &lt;br /&gt;Cancun Golf Club at Pok Ta Pok - 2.2 km / 1.3 mi &lt;br /&gt;Nautilus Diving and Training Center - 2.6 km / 1.6 mi &lt;br /&gt;Cancun Convention Center - 2.8 km / 1.7 mi &lt;br /&gt;Plaza Caracol - 2.8 km / 1.8 mi &lt;br /&gt;Playa Tortuga - 3.1 km / 1.9 mi &lt;br /&gt;Aquaworld - 3.6 km / 2.2 mi &lt;br /&gt;Playa Langosta - 4.1 km / 2.6 mi &lt;br /&gt;Museo de Arte Popular Mexicano - 4.6 km / 2.9 mi &lt;br /&gt;Playa Linda - 5 km / 3.1 mi &lt;br /&gt;Playa Delfines - 6.1 km / 3.8 mi &lt;br /&gt;El Rey Ruins - 6.2 km / 3.8 mi &lt;br /&gt;&lt;/p&gt;&lt;p&gt;The preferred airport for ME Cancun - Complete ME All Inclusive is Cancun, Quintana Roo (CUN-Cancun Intl.) - 14.3 km / 8.9 mi. &lt;/p&gt; </areaInformation> And I echo it in php: <div id="hotelInfo"><?php echo $areaInfo ?></div> And of course I get this in the browser window: Distances are calculated in a straight line from the property's location to the point of interest or attraction, and may not reflect actual travel distance. <br /><br /> Distances are displayed to the nearest 0.1 mile and kilometre. <p>La Isla Shopping Mall - 0.5 km / 0.3 mi <br />Yamil Lu'um - 0.5 km / 0.3 mi <br />Acuario Interac etc. How can I fix this??? Any help would be greatly apreciated! Thanks!

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  • XMLEncoder in java for serialization

    - by tom
    Im just wondering how i use xmlencoder to serialize ArrayList where foo is my own made class. Do i have to do anything in particular, ie define my own xml structure first and then call toString on each value in my list and write it out? Can anyone point me to a good tutorial? http://java.sun.com/products/jfc/tsc/articles/persistence4/ Thats what i have been looking at but it doesnt seem to mention what to do with non library classes. Thanks

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  • Formatting this JavaScript Line

    - by dkris
    Hi, I am trying to format this line of code in my popup window, but i am facing unterminated string literal error. Can somebody please tell me how best I could format this. window.setTimeout("winId.document.write('<script src="../js/tiny_mce/tiny_mce.js" type="text/javascript"></script>\n')", 10); Also point out if this particular line of code would work fine in the popup?

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  • How do I use File.new to find a file from Rails?

    - by Angela
    I am trying to read a file that has been saved on the /system folder using Paperclip, for example. But when I use that .url method from Paperclip to read that file using File.new, I get that the file isn't found. The directory is correct, but I still can't access it. What is the right way to find a file for File.new for example? I tried to point to other files, as well, and to no avail.

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  • UItextView in UITableview, autocorrection bubble not visible

    - by f0rz
    Hello! I have a UITableView with custom cells. The cells containing one UITextView each and the cell is resizing during user type text in the TextView. My problem is when user is on first row in a TextView autocorrection bubbles wont be visible in the current cell. Is there any workaround or can someone point me to another direction?

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