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  • Consuming a USB HID device in Windows CE 6.0 using c#

    - by kersny
    I am working on an Embedded Windows CE project and am interested in accessing a USB HID device through one of its USB Host ports. All I really need to read are the raw HID spec packets. On a windows computer, I have a working program using hid.dll, but as far as I have researched, there is no equivalent on CE. I know there is the usbhid.dll, but I'm not sure if it is applicable for this situation. I would prefer not to write a kernel level driver, as I would like to do my coding in c#. Has anyone had experience consuming an HID device on Windows CE?

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  • Extending Django-tagging, adding extra field to each tag?

    - by victorhooi
    heya, We're coding together a Django app to handle reviews of newspaper articles. Each newspaper article model will an arbitrary number of tags associated with it. Also, each tag will have an optional ranking (0 to 10). I was thinking of using django-tagging to do this (http://code.google.com/p/django-tagging/), but I'm not sure of the best way to add the ranking to the system. Should I extend django-tagging somehow? (Not sure if this is possible, without changing django-tagging's actual code?). Or is there a better way of achieving this? Cheers, Victor

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  • Why Use PHP OOP over Basic Functions and When?

    - by Codex73
    There are some posts about this matter, but I didn't clearly get when to use Object Oriented coding and when to use programmatic functions in an include. Somebody also mentioned to me that OOP is very heavy to run, and makes more workload. Is this right? Lets say I have a big file with 50 functions, why will I want to call these in a class? and not by function_name(). Should I switch and create object which holds all of my functions? What will be the advantage or specific difference? What benefits does it bring to code OOP in php ? Modularity?

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  • .Net: Adding files and folders to SETUP Project programmatically

    - by Manish
    So, here is the scenario: I want to create a installer which would just dump few files and folders at a location specified by user. But the problem is these files are required to be picked up from a fixed source folder and then the installer is build. Also, these files may change any time and then again a new version of the installer is required to be created. So this needs to be done programmatically. Also, how can I add some coding stuff in setup projects? (New to SETUP PROJECTS) How? Any ideas/comments appreciated...

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  • RIA Services and Shared domainlogic??

    - by NPehrsson
    I'm kind of disappointed at Ria Services. I like to work in a domain driven design way, so for example if I'm working with an invoicing system I have an object invoice which will have all methods on it to for example calculate total price from its invoice rows. public decimal Amount { get {return Entries.Sum(x => x.Amount);} } I like to have methods to add a new row to validate in data. public void AddInvoiceRow(Article article, decimal quantity) This is functionality I need on both client and server side. Have I missed something big or is RIA Services not for me? (In the whole, I don't like Silverlight restrictions at all, I mean that we need get; set on every data field we want to transfer for example some fields are not public at all in domain driven design but the technique Silverlight offers forcing us to do bad coding.)

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  • Win32 API Programming - Is it worth ?

    - by nXqd
    Now I code win32 api windows explorer . But it seems quite hard to me.I've a month to do it. But through the time I code, I wonder is it worth that I code win32 api ? . When we can create GUI easily with MFC or even easier with C#. What should I do ? 1- Keep coding with win32 api to deeply understand about them. 2- Just learn and code some programs to understand how they work. Can you determine how many time does it take in each choice ( or how many projects ). Thx for reading, as a 2nd student of IT University I really want your advice in this. My purpose is becoming a good and effective programmer :) PS: recommended books are really appreciated.

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  • How do I specify the block object / predicate required by NSDictionary's keysOfEntriesPassingTest ?

    - by Todd
    For learning (not practical -- yet) purposes, I'd like to use the following method on an NSDictionary to give me back a set of keys that have values using a test I've defined. Unfortunately have no idea how to specify the predicate. NSDictionary keysOfEntriesPassingTest: - (NSSet *)keysOfEntriesPassingTest:(BOOL (^)(id key, id obj, BOOL *stop))predicate Let's say for example all my values are NSURLs, and I'd like to get back all the URLs that are on port 8080. Here's my stab at coding that -- though it doesn't really make sense to me that it'd be correct: NSSet * mySet = [myDict keysOfEntriesPassingTest:^(id key, id obj, BOOL *stop) { if( [[obj port] isEqual: [NSNumber numberWithInt: 8080]]) { return key; }] And that's because I get back the following compiler error: incompatible block pointer types initializing 'void (^)(struct objc_object *, struct objc_object *, BOOL *)', expected 'BOOL (^)(struct objc_object *, struct objc_object *, BOOL *)' What am I missing? I'd appreciate a pointer at some docs that go into more detail about the "Block object" that the predicate is supposed to be. Thanks!

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  • foreach loop from multiple arrays c#

    - by Mike
    This should be a simple question. All I want to know is if there is a better way of coding this. I want to do a foreach loop for every array, without having to redeclare the foreach loop. Is there a way c# projects this? I was thinking of putting this in a Collection...? Please, critique my code. foreach (TextBox tb in vert) { if (tb.Text == box.Text) conflicts.Add(tb); } foreach (TextBox tb in hort) { if (tb.Text == box.Text) conflicts.Add(tb); } foreach (TextBox tb in cube) { if (tb.Text == box.Text) conflicts.Add(tb); }

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  • Will i need two database connection for the following created trigger in MySQL?

    - by Parth
    Will i need two database connection for the following created trigger in MySQL? "DELIMITER $$ DROP TRIGGER `update_data` $$ CREATE TRIGGER `update_data` AFTER UPDATE on `jos_menu` FOR EACH ROW BEGIN IF (NEW.menutype != OLD.menutype) THEN INSERT INTO jos_menuaudit set menuid=OLD.id, oldvalue = OLD.menutype, newvalue = NEW.menutype, field = 'menutype'; END IF; IF (NEW.name != OLD.name) THEN INSERT INTO jos_menuaudit set menuid=OLD.id, oldvalue = OLD.name, newvalue = NEW.name, field = 'name'; END IF; IF (NEW.alias != OLD.alias) THEN INSERT INTO jos_menuaudit set menuid=OLD.id, oldvalue = OLD.alias, newvalue = NEW.alias, field = 'alias'; END IF; END$$ DELIMITER ;" I am using PHP for coding.... EDITED To Execute the previous trigger, will i need to have two DB connection for it? likewise: mysql_select_db('pranav_test'); mysql_select_db('information_schema');

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  • Persistent warning message about "initWithDelegate"!

    - by RickiG
    Hi This is not an actual Xcode error message, it is a warning that has been haunting me for a long time. I have found no way of removing it and I think I maybe have overstepped some unwritten naming convention rule. If I build a class, most often extending NSObject, whose only purpose is to do some task and report back when it has data, I often give it a convenience constructor like "initWithDelegate". The first time I did this in my current project was for a class called ISWebservice which has a protocol like this: @protocol ISWebserviceDelegate @optional - (void) serviceFailed:(NSError*) error; - (void) serviceSuccess:(NSArray*) data; @required @end Declared in my ISWebservice.h interface, right below my import statements. I have other classes that uses a convenience constructor named "initWithDelegate". E.g. "InternetConnectionLost.h", this class does not however have its methods as optional, there are no @optional @required tags in the declaration, i.e. they are all required. Now my warning pops up every time I instantiate one of these Classes with convenience constructors written later than the ISWebservice, so when utilizing the "InternetConnectionLost" class, even though the entire Class owning the "InternetConnectionLost" object has nothing to do with the "ISWebservice" Class, no imports, methods being called, no nothing, the warning goes: 'ClassOwningInternetConnectionLost' does not implement the 'ISWebserviceDelegate' protocol I does not break anything, crash at runtime or do me any harm, but it has begun to bug me as I near release. Also, because several classes use the "initWithDelegate" constructor naming, I have 18 of these warnings in my build results and I am getting uncertain if I did something wrong, being fairly new at this language. Hope someone can shed a little light on this warning, thank you:)

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  • ASP.NET RadioButton messing with the name (groupname)

    - by Hojou
    I got a templated control (a repeater) listing some text and other markup. Each item has a radiobutton associated with it, making it possible for the user to select ONE of the items created by the repeater. The repeater writes the radiobutton setting its id and name generated with the default asp.net naming convention making each radiobutton a full 'group'. This means all radiobuttons are independant on each other, which again unfortunately means i can select all radiobuttons at the same time. The radiobutton has the clever attribute 'groupname' used to set a common name so they get grouped together and thus should be dependant (so i can only select one at a time). The problem is - this doesn't work - the repeater makes sure the id and thus the name (which controls the grouping) are different. Since i use a repeater (could have been a listview or any other templated databound control) i can't use the RadioButtonList. So where does that leave me? I know i've had this problem before and solved it. I know almost every asp.net programmer must have had it too, so why can't i google and find a solid solution to the problem? I came across solutions to enforce the grouping by javascript (ugly!) or even to handle the radiobuttons as non-server controls, forcing me to do a Request.Form[name] to read the status. I also tried experimenting with overriding the name attribute on the PreRender event - unfortunately the owning page and masterpage again overrides this name to reflect the full id/name so i end up with the same wrong result. If you have no better solution than i posted, you are still very welcome to post your thoughts - atleast i'll know that my friend 'jack' is right about how messed up 'asp.net' is sometimes ;)

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  • how to handle it if the management just keep on giving me spec after spec non-stop?

    - by Jian Lin
    As a programmer, I feel burnt out if the management give me spec after spec, day after day. I think I can code 6 hours a day very focused, but non-stop coding does burn me out a little, especially it is 1 year or 18 months non-stop. A mere 1 week or 2 week vacation per year isn't going to help much. Sometimes I want to take some time to learn new things, or just to take a break for a month so as to re-charge, like back in college when we have holidays for 1 month during winter or 2.5 months during summer. What do you think?

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  • resolving localhost in php so can be views outside VM

    - by DA
    I'm running Windows 7. Within, I'm running Virtualbox and Ubuntu. Within Ubuntu, I'm running Apache and using PHP codeigniter. To reference our CSS and JS files, we use this syntax: <?php echo site_url('css/styles.css'); ?> When viewing the site locally (within Ubuntu VM) that resolves to: http://localhost/styles.css So works fine. The catch is when I access that site from within Windows 7 (for IE testing). To access the site in Windows 7, I refer to the IP address of the VM: http://xx.x.x.x/ That loads the site but, alas, all the site_url variables are still being rewritten as 'localhost'. Said files obviously don't exist on the localhost of my windows 7. Is there a way around this short of just hard-coding relative links in my PHP file?

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  • Measuring Programmers' Productivity. Bad, good or invasive?

    - by Fraga
    A client needs my company to develop an app that will be able to measure the programmer productivity, by getting information from VS, IE, SSMS, profiler and VMware. For example: Lines, Methods, Classes (Added, Deleted, Modified) How many time spent in certain file, class, method, specific task, etc. How many time in different stages of the development cycle (Design, Coding, Debugging, Compiling, Testing) Real lines of code. Etc They told me they want to implement PSP. Would you resign if a company wants to measure this way? OR Would you install this kind of software for self improvement?

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  • When do you learn from your mistakes?

    - by smayers81
    When are you supposed to learn from your mistakes in coding / design? Is it something you take with you to the next project or do you learn in the middle of your current one, sacrificing consistency for cleaner, more well-informed code? For example, my application can be distinctly demarcated down two lines of business -- say one side is for sales and the other is for marketing. Both are somewhat tied together, but as far as the team structure, use cases, developers, etc. the app consists of the Sales code and the Marketing Code. Now, say the Sales code went in first and while good-intentioned, made some bad mistakes. Should the Marketing Code follow suit and make the same mistakes for the sake of consistency or should Marketing architects and designers instead learn from the mistakes that Sales made and developer a cleaner codebase, even though Sales and Marketing are in the exact same system? Basically, do you learn from your mistakes while in a project or do you continue to pile crap on top of crap?

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  • Matlab tutorial for programmers

    - by Jonas
    I'm getting some new students soon, who will be writing Matlab code. They're new to Matlab, but they have experience coding in Java and C++. I'm going to have them go through the 'Getting Started' section of the Matlab help. In addition, I want to give a small tutorial with the goal to prevent them from making some of the most common mistakes people make when switching to Matlab ("Matlab starts counting at 1"), and show them some features that they may not be aware of when coming from other languages ("you can subtract a scalar directly from an array, and for vectors, there's bsxfun"). What are the most important things I should tell them?

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  • Rails user authorization

    - by Zachary
    I am currently building a Rails app, and trying to figure out the best way to authenticate that a user owns whatever data object they are trying to edit. I already have an authentication system in place (restful-authentication), and I'm using a simple before_filter to make sure a user is logged in before they can reach certain areas of the website. However, I'm not sure the best way to handle a user trying to edit a specific piece of data - for example lets say users on my site can own Books, and they can edit the properties of the book (title, author, pages, etc), but they should only be able to do this for Books that -they- own. In my 'edit' method on the books controller I would have a find that only retrieved books owned by the current_user. However, if another user knew the id of the book, they could type in http://website.com/book/7/edit , and the controller would verify that they are logged in, then show the edit page for that book (seems to bypass the controller). What is the best way to handle this? Is it more of a Rails convention routing issue that I don't understand (being able to go straight to the edit page), or should I be adding in a before_find, before_save, before_update, etc callbacks to my model?

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  • Question about the Cloneable interface and the exception that should be thrown

    - by Nazgulled
    Hi, The Java documentation says: A class implements the Cloneable interface to indicate to the Object.clone() method that it is legal for that method to make a field-for-field copy of instances of that class. Invoking Object's clone method on an instance that does not implement the Cloneable interface results in the exception CloneNotSupportedException being thrown. By convention, classes that implement this interface should override Object.clone (which is protected) with a public method. See Object.clone() for details on overriding this method. Note that this interface does not contain the clone method. Therefore, it is not possible to clone an object merely by virtue of the fact that it implements this interface. Even if the clone method is invoked reflectively, there is no guarantee that it will succeed. And I have this UserProfile class: public class UserProfile implements Cloneable { private String name; private int ssn; private String address; public UserProfile(String name, int ssn, String address) { this.name = name; this.ssn = ssn; this.address = address; } public UserProfile(UserProfile user) { this.name = user.getName(); this.ssn = user.getSSN(); this.address = user.getAddress(); } // get methods here... @Override public UserProfile clone() { return new UserProfile(this); } } And for testing porpuses, I do this in main(): UserProfile up1 = new UserProfile("User", 123, "Street"); UserProfile up2 = up1.clone(); So far, no problems compiling/running. Now, per my understanding of the documentation, removing implements Cloneable from the UserProfile class should throw an exception in up1.clone() call, but it doesn't. I've read around here that the Cloneable interface is broken but I don't really know what that means. Am I missing something?

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  • Are there any good Java API for facebook?

    - by Kamikaze Mercenary
    I've played around a bit with twitter4j and found it absolutely wonderful. Now I've been looking into the equivalent for facebook but so far haven't had much luck finding a decent project. I looked into facebook-java-api but it appears that they break their API from release to release. I consider this unacceptable. I'm currently playing around a bit with RestFB and the API seems decent so far but I've been having some connection problems. I'm just looking for a simple library that lets me post status updates, send direct messages and get a list of friends through minimal coding effort. Has anyone had any success using a java API for facebook and if so, what are you using? Thanks.

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  • As our favorite imperative languages gain functional constructs, should loops be considered a code s

    - by Michael Buen
    In allusion to Dare Obasanjo's impressions on Map, Reduce, Filter (Functional Programming in C# 3.0: How Map/Reduce/Filter can Rock your World) "With these three building blocks, you could replace the majority of the procedural for loops in your application with a single line of code. C# 3.0 doesn't just stop there." Should we increasingly use them instead of loops? And should be having loops(instead of those three building blocks of data manipulation) be one of the metrics for coding horrors on code reviews? And why? [NOTE] I'm not advocating fully functional programming on those codes that could be simply translated to loops(e.g. tail recursions) Asking for politer term. Considering that the phrase "code smell" is not so diplomatic, I posted another question http://stackoverflow.com/questions/432492/whats-the-politer-word-for-code-smell about the right word for "code smell", er.. utterly bad code. Should that phrase have a place in our programming parlance?

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  • Multipart question: Mapping between xml and Json using xpath

    - by scope-creep
    This is a JSON mapping question from a json newbie. Currently i'm reading xml using xpath in C#, and the xpath are returning either the element or attribute node values, as is the schema's want. I want to write out some of the returned values into a json formatted file. I know i can faneigle the xpath expression to return the element or attribute names, so I can built the appropriate name/value json structure before serialization, but I was I'm wondering if their was some way of doing a mapping between the xml and json. The xml schema is fairly big, so potentially the mapping will be big, meaning a ton of cumbersom coding to make it work. Is their any way to automap somehow? I was planning to use json.net, which seems flexible enough, although their may be a better approach. Any help would be appreciated. Bob.

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  • Choosing between ExtJS and YUI based of application parameters.

    - by Kabeer
    Hello. I need help in taking call to choose between Ext JS and YUI libraries. Here are the key factors I have derived from my application requirements & development process: Complex, windows forms like controls Widgets, Layouts, Utilities Inter widget communication Easy to extend Easy to learn Intuitive & concise coding Strong exception handling Active support / community To update with upcoming technologies (HTML5, etc.) Skins & Themes to be easy to change Skins & Themes to support variety (a text box for different context to appear differently) Support & Utilities for standard protocols (XmlHttp, JSON) Good performance (responsive) Cost is not crucial, but I don't mind saving :)

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  • spamassassin setup how to make sure X-Spam-Status is allways written.

    - by DoviG
    Hi, I just found out that spamassassin skips checking for email bigger than 250KB by default. Due to a coding bug, I check for the X-Spam-Status header in incoming emails and did not take into account the fact that it might be null. I know that I can increase the size of the limit by configuration but it may cause a load issue on my server. Since I do not want to redeploy my application at this time I was wondering if there is a way to make sure this header exists automatically in every email, either by spamassassin configuration or by postfix or something else. Thanks, Dov.

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  • vb6: set SysTabControl32 by code

    - by Fuxi
    hi, i'm coding a little app for controlling soulseek - what i want do is clicking the "Search Files" button by code. i've got the handle to the tabbed control (SysTabControl32) and managed to change the tab with following code: rc1 = SendMessage(hwnd, TCM_SETCURFOCUS, ByVal 0, ByVal 0&) the problem: the tab control is changing to the proper button, but nothing happens. i assume i also also have to send a mouseclick to it, as when clicking by mouse, the button goes down and up again. any ideas how to do this? thx

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  • Jquery - Match two email address

    - by Caremy
    I'm setting up a registration form and use the jquery validation script. There are two email address input textboxes. Email 1 must match Email 2. How do we validate these two email to ensure the 2nd email match the 1st email? Hope someone could help with the validation script. Here's my textboxes coding. <label class="input required">7. Email Address:</label> <input name="author_email" id="author_email" class="inputclass pageRequired email" maxlength="254" title="Email address required" /> <br /> <label class="input required">8. Confirm Email:</label> <input name="author_confirm_email" id="author_confirm_email" class="inputclass pageRequired email" equalTo:"#author_email" maxlength="254" title="Please confirm your email address" /> <br /> Thank you.

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