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• Problem referencing querystring using fb:req-choice

  - by vondip

  Hi all, I am building a small facebook application. I am using asp.net and currently working with the fb:req-choice control (tied along with fb:request-form and fb:multi-friend-selector). Problem is, that when I specify the redirect url for when the user clicks my invitation, instead of getting what I specified: http://apps.facebook.com/myApp/forum.aspx?tId=1&ref=app&code=2.74rRNejG7tpAOqgDCNf8qA__.3600.1275202400-106570384737670%7CPi8JpoHDW3xGuq2lxdZl1d4CLUU. This is what I am getting: http://apps.facebook.com/myApp/forum.aspx?tId&code=2.74rRNejG7tpAOqgDCNf8qA__.3600.1275202400-106570384737670%7CPi8JpoHDW3xGuq2lxdZl1d4CLUU. as you can see my query string isn't getting parsed. Instead, only the first parameter is written, why is that? How can I get this right?

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• Django | Save model's choice list values

  - by MMRUser

  I have a form that has a choice list: <select name="cellSerpro" id="idcellserpro" class="field text" > <option value="">---</option> <option value="option1">Verizon</option> <option value="option2">AT&T</option> <option value="option3">T-Mobile</option> <option value="option4">Sprint</option> </select> So how do I get the selected value of it from the Django's model class in order to save it in the database, I have search through the net but couldn't find any way of doing it.. Thanks..

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• Java Framework Choice Question.

  - by Sarang

  We do have many frameworks available in Java. Struts, Swing, JSF 2.0, Spring etc are used as per their priority. Actually, I don't know how many they are as well! But, as I am fresher to Java, even learning after their architecture, I cannot decide which framework can be used with what type of Projects ! Also, I am confused with mixed use of framework like Spring + JSF. What is the benefit to it ? Another thing making me confusing is about the UI components available in market. Like, we do have Primefaces, Ice-faces, MyFaces, Rich-faces. They may or may not have been supporting AJAX in-built. They may contains some bugs as well. What is best choice for Framework + UI component that can directly provide a best feet solution for any project ?

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• xs:choice unbounded list

  - by Matt

  I want to define an XSD schema for an XML document, example below: <?xml version="1.0" encoding="utf-8"?> <view xmlns="http://localhost/model_data" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://localhost/model_data XMLSchemaView.xsd" path="wibble" id="wibble"> <text name="PageTitle">Homepage</text> <text name="Keywords">home foo bar</text> <image name="MainImage"> <description>lolem ipsum</description> <title>i haz it</title> <url>/images/main-image.jpg</url> <type>image/jpeg</type> <alt>alt text for image</alt> <width>400</width> <height>300</height> </image> <link name="TermsAndConditionsLink"> <url>/tnc.html</url> <title>Terms and Conditions</title> <target>_blank</target> </link> </view> There's a view root element and then an unknown number of field elements (of various types). I'm using the following XSD schema: <?xml version="1.0" encoding="utf-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://localhost/model_data" targetNamespace="http://localhost/model_data" id="XMLSchema1"> <xs:element name="text" type="text_field"/> <xs:element name="view" type="model_data"/> <xs:complexType name="model_data"> <xs:choice maxOccurs="unbounded"> <xs:element name="text" type="text_field"/> <xs:element name="image" type="image_field"/> <xs:element name="link" type="link_field"/> </xs:choice> <xs:attribute name="path" type="xs:string"/> <xs:attribute name="id" type="xs:string"/> </xs:complexType> <xs:complexType name="image_field"> <xs:all> <xs:element name="description" type="xs:string"/> <xs:element name="title" type="xs:string"/> <xs:element name="type" type="xs:string"/> <xs:element name="url" type="xs:string"/> <xs:element name="alt" type="xs:string"/> <xs:element name="height" type="xs:int"/> <xs:element name="width" type="xs:int"/> </xs:all> <xs:attribute name="name" type="xs:string"/> </xs:complexType> <xs:complexType name="text_field"> <xs:simpleContent> <xs:extension base="xs:string"> <xs:attribute name="name" type="xs:string"/> </xs:extension> </xs:simpleContent> </xs:complexType> <xs:complexType name="link_field"> <xs:all> <xs:element name="target" type="xs:string"/> <xs:element name="title" type="xs:string"/> <xs:element name="url" type="xs:string"/> </xs:all> <xs:attribute name="name" type="xs:string"/> </xs:complexType> </xs:schema> This looks like it should work to me, but it doesn't and I always get the following error: Element <text> is not allowed under element <view>. Reason: The following elements are expected at this location (see below) <text> <image> <link> Error location: view / text Details cvc-model-group: Element <text> unexpected by type 'model_data' of element <view>. cvc-elt.5.2.1: The element <view> is not valid with respect to the actual type definition 'model_data'. I've never really used XSD schemas before, so I'd really appreciate it if someone could point out where I'm going wrong.

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• Symfony2 Setting a default choice field selection

  - by Mat

  I am creating a form in the following manner: $form = $this->createFormBuilder($breed) ->add('species', 'entity', array( 'class' => 'BFPEduBundle:Item', 'property' => 'name', 'query_builder' => function(ItemRepository $er){ return $er->createQueryBuilder('i') ->where("i.type = 'species'") ->orderBy('i.name', 'ASC'); })) ->add('breed', 'text', array('required'=>true)) ->add('size', 'textarea', array('required' => false)) ->getForm() How can I set a default value for the species listbox? Thank you for your response, I apologise, I think I should rephrase my question. Once I have a value that I retrieve from the model, how do I set that value as SELECTED="yes" for the corresponding value in the species choice list? So, that select option output from the TWIG view would appear like so: <option value="174" selected="yes">Dog</option>

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• Value [...] not a valid choice, django-updown

  - by tamara

  I am trying to implemet django-updown https://github.com/weluse/django-updown. When I try to add vote trough the admin panel it says Value 1 not a valid choice. This is the models.py from the application: _SCORE_TYPE_CHOICES = ( ('-1', 'DISLIKE'), ('1', 'LIKE'), ) SCORE_TYPES = dict((value, key) for key, value in _SCORE_TYPE_CHOICES) class Vote(models.Model): content_type = models.ForeignKey(ContentType, related_name="updown_votes") object_id = models.PositiveIntegerField() key = models.CharField(max_length=32) score = models.SmallIntegerField(choices=_SCORE_TYPE_CHOICES) user = models.ForeignKey(User, blank=True, null=True, related_name="updown_votes") ip_address = models.IPAddressField() date_added = models.DateTimeField(default=datetime.datetime.now, editable=False) date_changed = models.DateTimeField(default=datetime.datetime.now, editable=False) Do you have an idea what could be wrong?

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• Syntax Recognition for XML-Based Languages in Oracle JDeveloper

  - by Ramkumar Menon

    @Thanks Jeffrey Stephenson If you are looking at using any one of the new XML Based languages, lets say a docbook xml, or xproc, or what not, you can make use of JDeveloper's syntax highlighting and completion insight feature to ease out those extra keystrokes. All you need is a URL/local copy of the XML Schema for the language. Once you have, you can register it via Tools --> Preferences --> XML Schemas.   Remember to provide a new extension name [Using a default .xml extension did not work for me.] I provided my own extension .dbk for my docbook files. Once you save these settings, you can create new files that conform to the schema, and you get validation/completion insight/prompting for free.      

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• What's wrong with JavaScript

  - by ts01

  There is a lot of buzz around Dart recently, often questioning Google motivations and utility of Dart as replacement for JavaScript. I was searching for rationale of creating Dart rather than investing more effort in ECMAScript. In well known leaked mail its author is saying that Javascript has historical baggage that cannot be solved without a clean break. But there is only one concrete example given (apart of performance concerns) of "fundamental language problems", which is an existence of a single Number primitive So, my questions are: How an existence of a single Number primitive can be a "fundamental problem"? Are there other known "fundamental problems" in JavaScript?

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• Using idle time in turn-based (RPG) games for updating

  - by The Communist Duck

  If you take any turn based RPG game there will be large periods of time when nothing is happening because the game is looping over 'wait_for_player_input'. Naturally it seems sensible to use this time to update things. However, this immediately seems to suggest that it would need to be threaded. Is this sort of design possible in a single thread? loop: if not check_something_pressed: update_a_very_small_amount else keep going But if we says 'a_very_small_amount' is only updating a single object each loop, it's going to be very slow at updating. How would you go about this, preferably in a single thread? EDIT: I've tagged this language-agnostic as that seems the sensible thing, though anything more specific to Python would be great. ;-)

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• how to learn ios game development using swift.. good starting point?

  - by hamobi

  I've published a simple app on the app store using objective-c. That was a good learning experience but I never grew to love the language. Later on I jumped into learning cocos2d in order to begin developing a game.. but objective-c always seemed really cumbersome to write. Eventually I put my project aside. Now that swift has come out.. It has made me think about developing games again.. I know that xcode has some project types geared towards game development, but since I'm a beginner in this area I really need some hand holding (books / tutorials) to get started. Cocos2d seems like its really stuck in that objective-c world. What's the best way for a beginner to learn game development using swift?

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• Is the slow performance of programming languages a bad thing?

  - by Emanuil

  Here's how I see it. There's machine code and it's all that the computers needs in order to run something. The computers don't care about programming languages. It doesn't matter to them if the machine code comes from Perl, Python or PHP. Programming languages exist to serve programmers. Some programming languages run slower than others but that's not necessarily because there is something wrong with them. In many cases it's just because they do more things that otherwise programmers would have to do and by doing these things, they do better what they are supposed to do - serve programmers. So is the slower performance (at runtime) of a programming language really a bad thing?

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• Online training modules / programs for best software engineering practices?

  - by Steve

  We're taking over a team in a foreign country and the programming standards there aren't up to par with US standards. Folks there lack the formal training and basic understanding of computing concepts of databases, how computers work, what good software engineering practices are. Short of sending these ppl to college again, are there good online courses available that we can enroll them into so that they can upgrade their skills? I am specifically looking for online training courses, but recommendations for books are also welcome. This is language-agnostic.

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• Is case after case in a switch efficient?

  - by RandomGuy

  Just a random question regarding switch case efficiency in case after case; is the following code (assume pseudo code): function bool isValid(String myString){ switch(myString){ case "stringA": case "stringB": case "stringC": return true; default: return false; } more efficient than this: function bool isValid(String myString){ switch(myString){ case "stringA": return true; case "stringB": return true; case "stringC": return true; default: return false; } Or is the performance equal? I'm not thinking in a specific language but if needed let's assume it's Java or C (for this case would be needed to use chars instead of strings).

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• How do I change a local apps locale in LTSP?

  - by Danil Zvyagintsev

  I'm wondering how to change locale (UI gtk) inside local apps to ru_RU for example instead of en_US. Ror example i install chromium-browser inside client image chroot /opt/ltsp/i386 apt-get -y install chromium-browser ltsp-update-image --arch=i386 booted from thin client i see LDM in ru_RU lang login to x session (gnome) everything is in ru_RU but trying run ltsp-localapps chromium-browser and see chromium with en_US interface...BUT i need in RUSSIAN i've added file on both host (/etc/default/locale) and thin client image (/opt/ltsp/i386/etc/default/locale) with LANG=ru_RU.UTF-8 LANGUAGE=ru_RU.UTF-8 LC_ALL=ru_RU.UTF-8 but nothing changed lts.conf also has LDM_LANG=ru_RU.utf-8 in it... Is it possible to change lang of localapps?

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• Benchmarking CPU processing power

  - by Federico Zancan

  Provided that many tools for computers benchmarking are available already, I'd like to write my own, starting with processing power measurement. I'd like to write it in C under Linux, but other language alternatives are welcome. I thought starting from floating point operations per second, but it is just a hint. I also thought it'd be correct to keep track of CPU number of cores, RAM amount and the like, to more consistently associate results with CPU architecture. How would you proceed to the task of measuring CPU computing power? And on top of that: I would worry about a properly minimum workload induced by concurrently running services; is it correct to run benchmarking as a standalone (and possibly avulsed from the OS environment) process?

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• OUAB Europe Globalization Topics

  - by ultan o'broin

  Pleased to announce that the Oracle Usability Advisory Board has added a globalization workgroup for 2011. This will be headed up my myself. The aims of this workgroup are: To understand how our customers use translated versions of applications To identify key international support, translation and localization-related usability issues in deployed applications To make recommendations to Oracle usability and development teams about meeting global customer usability requirements in current and future versions of our applications. Issues include: How international users use applications when working, ethnography opportunities, key cultural impacts on usability; multilingual feature usage, localization of forms and reports, language quality, extensibility, translation of user assistance, user-generated and rich-media content like UPK, and international mobile application opportunities. More details will be available on the usableapps.oracle.com website shortly.

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• Will Swift or any upcoming Apple developer tools be incompatible with .xibs? [on hold]

  - by user

  I'm still letting the sudden announcement of a language change (Swift) sink in, and I'm wondering if the upcoming platform changes will still be highly compatible with using .xibs for interface development. I've used Storyboards in multiple production projects but I don't feel very productive with them, and I get tired of managing multiple storyboards, links, and xib connections for complex views. I don't see why Swift and Xcode 6 wouldn't cooperate with Xibs indefinitely if it still allows @IBOutlets and @IBActions, but I have realized that Apple purposely shuns old methodologies for the sake of doing so. If there's any reasons to turn away from xibs in iOS8 besides the use-the-new-stuff conventional wisdom, I'd like to know before its too late.

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• Why are Javascript for/in loops so verbose?

  - by Matthew Scharley

  I'm trying to understand the reasoning behind why the language designers would make the for (.. in ..) loops so verbose. For example: for (var x in Drupal.settings.module.stuff) { alert("Index: " + x + "\nValue: " + Drupal.settings.module.stuff[x]); } It makes trying to loop over anything semi-complex like the above a real pain as you either have to alias the value locally inside the loop yourself, or deal with long access calls. This is especially painful if you have two to three nested loops. I'm assuming there is a reason why they would do things this way, but I'm struggling with the reasoning.

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• Programming languages specifications ebooks

  - by Oxinabox

  In this talk Jon Skeet talks about the advantages of reading programming language specifications. I have an Ebook Reader (a Sony, one of the better ones for PDF's, though EPub is still much better). Does anyone know any sources for specifications, optimised for ebook readersm that can be downloaded? I expect someone would have gone through the effort of optimising the websites for ebook reader reading, ideally: EPUB Format (though pdf will do) Annotated (eg XML) Most specifications I find don't have obvious download links. I'm having trouble googling because everytime I seach for say: "F# Spec EPUB" or "Python Spec PDF" most of the results are for the EPUB or PDF specifications.

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• Examples of "Lost art" on software technology/development

  - by mamcx

  With the advent of a new technology, some old ideas - despite been good - are forgotten in the process. I read a lot how some "new" thing was already present in Lisp like 60 years ago, but only recently resurface with other name or on top of another language. Now look like the new old thing is build functional, non-mutable, non-locking-thread stuff... and that make me wonder what have been "lost" in the art of development of software? What ideas are almost forgotten, waiting for resurface? One of my, I remember when I code in foxpro. The idea of have a full stack to develop database apps without impedance mismatch is something I truly miss. In the current languages, I never find another environment that match how easy was develop in fox back them. What else is missing?

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• C programming in 2011

  - by Duncan Bayne

  Many moons ago I cut C code for a living, primarily while maintaining a POP3 server that supported a wide range of OSs (Linux, *BSD, HPUX, VMS ...). I'm planning to polish the rust off my C skills and learn a bit about language implementation by coding a simple FORTH in C. But I'm wondering how (or whether?) have things changed in the C world since 2000. When I think C, I think ... comp.lang.c ANSI C wherever possible (but C89 as C99 isn't that widely supported) gcc -Wall -ansi -pedantic in lieu of static analysis tools Emacs Ctags Autoconf + make (and see point 2 for VMS, HP-UX etc. goodness) Can anyone who's been writing in C for the past eleven years let me know what (if anything ;-) ) has changed over the years? (In other news, holy crap, I've been doing this for more than a decade).

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• Chrome says my website is Serbian...how do I "force" chrome to use english?

  - by kristen

  Our website is based in the U.S. and all of our users are in the U.S. and the site is written in english. When we open the page in chrome, an alert comes up "This page is in Serbian...would you like to translate it"? I imagine it is some javascript or other code that is triggering that. Is there a way to force chrome to use "English" as the language? We tried googling this question but came up with nothing. thx!

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• What should NOT be included in comments? (opinion on a dictum by the inventor of Forth)

  - by AKE

  The often provocative Chuck Moore (inventor of the Forth language) gave the following advice (paraphrasing): "Use comments sparingly. Programs are self-documenting, with a modicum of help from mnemonics. Comments should say WHAT the program is doing, not HOW." My question: Should comments say WHY the program is doing what it is doing? Update: In addition to the answers below, these two provide additional insight. 1: Beginner's guide to writing comments? 2: http://programmers.stackexchange.com/a/98609/62203

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• How to name setter that does data conversion?

  - by IAdapter

  I'm struggling with how to name this method, I don't like the "set" prefix, because I feel it should be reserved for normal "dumb" setters and some tools might not like it (i did not check it in checkstyle, pmd, etc., but I got a feeling they won't like it.) for example (in java, but I feel its language agnostic) public void setActionListenerClicked(boolean actionListenerClicked) { this.actionListenerClicked = actionListenerClicked ? "1" : "0"; } The only purpose of this method is ONLY to set, this method is needed and cannot be joined with any other (because of framework used). P.S. I DO know that question is similar to How to name multi-setter?, but I feel its not the same question.

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• How to name multi-setter?

  - by IAdapter

  I'm struggling with how to name this method, I don't like the "set" prefix, because I feel it should be reserved for normal "dumb" setters and some tools might not like it (i did not check it in checkstyle, pmd, etc., but I got a feeling they won't like it.) for example (in java, but I feel its language agnostic) public void setField1Field2(String field1, String field2) { this.field1 = field1; this.field2 = field2; } The only purpose of this method is ONLY to set, this method is needed and cannot be joined with any other (because of framework used).

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