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  • C# and ASP.NET MVC: Using #if directive in a view

    - by Mega Matt
    Hi all, I've got a conditional compilation symbol I'm using called "RELEASE", that I indicated in my project's properties in Visual Studio. I want some particular CSS to be applied to elements when the RELEASE symbol is defined, and I was trying to do that from the view, but it doesn't seem to be working. My view code looks like this (shortened a bit for demo purposes): <% #if (RELEASE) %> <div class="releaseBanner">Banner text here</div> <% #else %> <div class="debugBanner">Banner text here</div> <% #endif %> With this code, and with the RELEASE symbol set, the 'else' code is running and I'm getting a div with the debugBanner class. So it doesn't seem to think that RELEASE is defined. It's worth noting that my actual C# code in .cs files is recognizing RELEASE and runs the correct code. It's only the view that is giving me the problem. Does anyone have any insight into this? Any help would be appreciated. Thanks.

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  • comma in regex in String.replaceAll() method?

    - by kknight
    My code tries to replace "," with "/" in a string. Should I escape "," in the regex string? Both of the two code snippets generated the same results, so I am confused. Code snippet 1: String test = "a,bc,def"; System.out.println(test.replaceAll("\\,", "/")); Code snippet 2: String test = "a,bc,def"; System.out.println(test.replaceAll(",", "/")); Should I use "," or "\,"? Which is safer? Thanks.

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  • What are good examples of perfectly acceptable approaches to development that are NOT test driven development (TDD)?

    - by markbruns
    The TDD cycle is test, code, refactor, (repeat) and then ship. TDD implies development that is driven by testing, specifically that means understanding requirements and then writing tests first before developing or writing code. My natural inclination is a philosophical bias in favor of TDD; I would like to be convinced that there are other approaches that now work well or even better than TDD so I have asked this question. What are examples of perfectly acceptable approaches that NOT test driven development? I can think of plenty approaches that are not TDD but could be a lot more trouble than what they are worth ... it's not moral judgement, it's just that they are cost more than they are worth ... the following are simply examples of things that might be ok as learning exercises, but approaches I'd find to be NOT acceptable in serious production and NOT TDD might include: Inspecting quality into your product -- Focusing efforts on developing a proficiency in testing/QA can be problematic, especially if you don't work on the requirements and development side first ... symptom of this include bug triaging where the developers have so many different bugs to deal with it, it is necessary to employ a form of triage -- each development cycle gets worse and worse, programmers work more and more hours, sleep less and less, struggle to keep going in death march until they are consumed. Superstition ... believing in things that you don't understand -- this would involve borrowing code that you believe has been proven or tested from somewhere, e.g. legacy code, a magic code starter wizard or an open source project, and you go forward hacking up a storm of modifications, sliding FaceBook Connect into your the user interface, inventing some new magic features on the fly (e.g. a mashup using the Twitter API, GoogleMaps API and maybe Zappos API), showing off your cool new "product" to a few people and then writing up a simple "specification" and list of "test cases" and turning that over to Mechanical Turk for testing.

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  • Do AOP violate layered architecture for enterprise apps?

    - by redzedi
    The question(as stated in the title) comes to me as recently i was looking at Spring MVC 3.1 with annotation support and also considering DDD for an upcoming project. In the new Spring any POJO with its business methods can be annotated to act as controller, all the concerns that i would have addressed within a Controller class can be expressed exclusively through the annotations. So, technically i can take any class and wire it to act as controller , the java code is free from any controller specific code, hence the java code could deal with things like checking security , starting txn etc. So will such a class belong to Presentation or Application layer ?? Taking that argument even further , we can pull out things like security, txn mgmt and express them through annotations , thus the java code is now that of the domain object. Will that mean we have fused together the 2 layers? Please clarify

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  • GWT: Reloading a single tab in a tab panel

    - by auste piliponyte
    I have a GWT tab panel and would like to reload a single tab when a certain event (e.g. button click) happens in another tab. Is there a way to do that? Another possibility would be executing some code (e.g. adding a new element to a tab) when that tab is selected. Any help would be really appreciated, I am stuck with this for a while already. To make the question more specific I am providing some code below. I have my code organized in screens, there is a home screen that initiates the tab panel. And there are separate screens for initiation of each tab. The simplified code for the home screen: public class HomeScreen extends Composite{ public HomeScreen() { TabPanel tabPanel = new TabPanel(); FlowPanel flowpanel; flowpanel = new FlowPanel(); ProfileTabScreen profileTabScreen = new ProfileTabScreen(); flowpanel.add(profileTabScreen); tabPanel.add(flowpanel, "Profile"); flowpanel = new FlowPanel(); GroupsTabScreen groupsTabScreen = new GroupsTabScreen(); flowpanel.add(groupsTabScreen); tabPanel.add(flowpanel, "Groups"); initWidget(tabPanel); } } Code for the tab screen from which I want to initiate the reload: private VerticalPanel groupPanel = new VerticalPanel(); private Button newGroupButton = new Button("New group"); public GroupsTabScreen() { newGroupButton.addClickHandler(new ClickHandler(){ public void onClick(ClickEvent event) { createNewGroup(); } }); groupPanel.add(newGroupButton); initWidget(groupPanel); } Code for the tab screen that has to be reloaded: private VerticalPanel profilePanel = new VerticalPanel(); private Label label = new Label("No groups yet."); public ProfileTabScreen() { profilePanel.add(label); initWidget(profilePanel); } So let's imagine I just want to change text of a label in profileTab (while in reality it will be ListBox and other elements), when the newGroupButton is clicked in groupTab. As I said, reloading the whole profileTab each time is is selected would be acceptable as well.

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  • why is there different syntax same outcome?

    - by Lizard
    Why is there different syntax same outcome? For example # Example 1 if($myCondition == true) : #my code here endif; if($myCondition == true) { #my code here } # Example 2 foreach($films as $film) : #my code here endforeach; foreach($films as $film) { #my code here } Also I have been using <?= for ages now and i now understand that is deprecated and I should be using <?php echo Is this the case and why? Its alot more annoying to have to write that out each time. What are your thoughts?

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  • Reason for different segments in Linux on x86

    - by anjruu
    Hey all, So, I know that Linux uses four default segments for an x86 processor (kernel code, kernel data, user code, user data), but they all have the same base and limit (0x00000000 and 0xfffff), meaning each segment maps to the same set of linear addresses. Given this, why even have user/kernel segments? I understand why there should be separate segments for code and data (just due to how the x86 processor deals with the cs and ds registers), but why not have a single code segment and a single data segment? Memory protection is done through paging, and the user and kernel segments map to the same linear addresses anyway. Thanks! anjruu

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  • Where I can download

    - by Sorrybyenglish
    Where I can download source codes of sites on clear OOP without Frameworks or Cms? For best studying system of OPP and with perfect code where should I focus my coding style? I can learning only on examples of code whatever but i dont need script I need all site code entirely with Database data and with setting up Apache. Thanks everyone. Sorry by my English )) P.S can you advice to me what Projects with advantages? Exactly ;p

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  • The delegate method "clickedButtonAtIndex:" is not called.

    - by sagiftw
    Hello everyone! I have created an alert view with two buttons using the following code: UIAlertView *alertView = [[UIAlertView alloc] initWithTitle: title message: msg delegate:nil cancelButtonTitle:@"Replay" otherButtonTitles:@"Highscore", nil]; [alertView show]; I want to run some code when one of the buttons is clicked. In order to do so, I have added the following method to the delegate.m file: - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex==0) //Run some code else //Other code } But this method is not called when I press either of the buttons! Can someone tell me why? Thanks in advance, Sagiftw

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  • Visual Basic and C++

    - by Hamdy Elgammal
    Hello there, I was reading a little into Visual Basic and it seemed a rather simple way to implement some GUI...So I was looking for a way to interface my C++ code to a Visual Basic snippet of code. For example, receive input from a Visual Basic app and send it over to C++ code to continue the logic of the program based on the input of that event.

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  • JavaScript: When does JavaScript evaluate a function, onload or when the function is called?

    - by Benj
    When does JavaScript evaluate a function? Is it on page load or when the function is called? The reason why I ask is because I have the following code: function scriptLoaded() { // one of our scripts finished loading, detect which scripts are available: var jQuery = window.jQuery; var maps = window.google && google.maps; if (maps && !requiresGmaps.called) { requiresGmaps.called = true; requiresGmaps(); } if (jQuery && !requiresJQuery.called) { requiresJQuery.called = true; requiresJQuery(); } if (maps && jQuery && !requiresBothJQueryGmaps.called) { requiresBothJQueryGmaps.called = true; requiresBothJQueryGmaps(); } } // asynch download of script function addScript(url) { var script = document.createElement('script'); script.src = url; // older IE... script.onreadystatechange=function () { if (this.readyState == 'complete') scriptLoaded.call(this); } script.onload=scriptLoaded; document.getElementsByTagName('head')[0].appendChild(script); } addScript('http://google.com/gmaps.js'); addScript('http://jquery.com/jquery.js'); // define some function dependecies function requiresJQuery() { // create JQuery objects } function requiresGmaps() { // create Google Maps object, etc } function requiresBothJQueryGmaps() { ... } What I want to do is perform asynchronous download of my JavaScript and start at the earliest possible time to begin executing those scripts but my code has dependencies on when the scripted have been obviously downloaded and loaded. When I try the code above, it appears that my browser is still attempting to evaluate code within my require* functions even before those functions have been called. Is this correct? Or am I misunderstanding what's wrong with my code?

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  • Rails 3 refactoring issue

    - by Craig
    The following view code generates a series of links with totals (as expected): <% @jobs.group_by(&:employer_name).sort.each do |employer, jobs| %> <%= link_to employer, jobs_path() %> <%= "(#{jobs.length})" %> <% end %> However, when I refactor the view's code and move the logic to a helper, the code doesn't work as expect. view: <%= employer_filter(@jobs_clone) %> helper: def employer_filter(jobs) jobs.group_by(&:employer_name).sort.each do |employer,jobs| link_to employer, jobs_path() end end The following output is generated: <Job:0x10342e628>#<Job:0x10342e588>#<Job:0x10342e2e0>Employer A#<Job:0x10342e1c8>Employer B#<Job:0x10342e0d8>Employer C#<Job:0x10342ded0>Employer D# What am I not understanding? At first blush, the code seems to be equivalent.

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  • Audio Player Royalty Free Music (dynamic audios )?

    - by Surya sasidhar
    hi, I am using Royalty Free Music player for playing the audio. ya it is playing perfect but i need to play it dynamically, i mean the audio will come from database how can i write the code for that. This is the royalty free music code..... var so = new SWFObject("playerSingle.swf", "mymovie", "192", "67", "7", "#FFFFFF"); so.addVariable("autoPlay", "yes"); so.addVariable("soundPath","song.mp3"); so.addVariable("overColor","#000044") so.addVariable("playerSkin","1") so.write("flashPlayer"); this above code is written in source code with in the script tag, then how can i write for dynamic audios please help me thanking you and this is the link for that site.. http://www.premiumbeat.com/flash_resources/free_flash_music_player/single_track_flash_mp3_player.php

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  • How do you put an "IF DEBUG" condition in a c# program?

    - by xarzu
    How do you put an "IF DEBUG" condition in a c# program so that, at run time, it will ignore a set of code if you are running in Debug mode and yet, execute a block of code if the program is not running in debug mode? A situation where this can be used is if a time stamp is taken at the start of a block and another time stamp is taken at the end. THey will hardly differ at run time. Yet, if you are stepping through the code in debug mode, they will differ a lot, and error conditions in an "if block" might be kicked off leading to the untimely (pun) execution of some code.

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  • Protocol communication help..

    - by Gopal
    Using Visual Studio 2005 Language: c# A new to c# I have software, the software should communicate with gprs devices. So i want to write a protocol, TCP, UDP communication code. Can any one give some idea for writing a source code and some sample code also.

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  • C# properties: How are they instantiated?

    - by Pedery
    Hi! This might be a pretty straightforward question, but I'm trying to understand some of the internal workings of the compilation. Very simply put, imagine an arbitrary object being instantiated. This object is then allocated on the heap. The object has a property of type PointF (which is value type), with a get and a set method. Imagine the get and the set method containing a few calculations for doing their work. How and where (stack/heap) and when is this code instantiated? This is the background for this question: I'm writing get and set methods for an object and these methods need to be accessed very frequently. The get and set code in itself is rather massive so I feared that in a worst case scenario the methods would be instantiated as an object or a value type with all internal code for every access of the property. On the other hand the code is probably instantiated when the main object is created and the CPU is simply told to jmp to the property code start. Anyway, this is what I want to have clarified.

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  • Why do I have to give an identifier?

    - by Knowing me knowing you
    In code: try { System.out.print(fromClient.readLine()); } catch(IOException )//LINE 1 { System.err.println("Error while trying to read from Client"); } In code line marked as LINE 1 compiler forces me to give an identifier even though I'm not using it. Why this unnatural constrain? And then if I type an identifier I'm getting warning that identifier isn't used. It just doesn't make sense to me, forcing a programmer to do something unnecesarry and surplus. And after me someone will revise this code and will be wondering if I didn't use this variable on purpouse or I just forgot. So in order to avoid that I have to write additional comment explaining why I do not use variable which is unnecessary in my code. Thanks

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  • ValueError: setting an array element with a sequence.

    - by MedicalMath
    This code: import numpy as p def firstfunction(): UnFilteredDuringExSummaryOfMeansArray = [] MeanOutputHeader=['TestID','ConditionName','FilterType','RRMean','HRMean','dZdtMaxVoltageMean','BZMean','ZXMean' ,'LVETMean','Z0Mean','StrokeVolumeMean','CardiacOutputMean','VelocityIndexMean'] dataMatrix = BeatByBeatMatrixOfMatrices[column] roughTrimmedMatrix = p.array(dataMatrix[1:,1:17]) trimmedMatrix = p.array(roughTrimmedMatrix,dtype=p.float64) myMeans = p.mean(trimmedMatrix,axis=0,dtype=p.float64) conditionMeansArray = [TestID,testCondition,'UnfilteredBefore',myMeans[3], myMeans[4], myMeans[6], myMeans[9] , myMeans[10], myMeans[11], myMeans[12], myMeans[13], myMeans[14], myMeans[15]] UnFilteredDuringExSummaryOfMeansArray.append(conditionMeansArray) secondfunction(UnFilteredDuringExSummaryOfMeansArray) return def secondfunction(UnFilteredDuringExSummaryOfMeansArray): RRDuringArray = p.array(UnFilteredDuringExSummaryOfMeansArray,dtype=p.float64)[1:,3] return firstfunction() Throws this error message: File "mypath\mypythonscript.py", line 3484, in secondfunction RRDuringArray = p.array(UnFilteredDuringExSummaryOfMeansArray,dtype=p.float64)[1:,3] ValueError: setting an array element with a sequence. However, this code works: import numpy as p a=range(24) b = p.reshape(a,(6,4)) c=p.array(b,dtype=p.float64)[:,2] I re-arranged the code a bit to put it into a cogent posting, but it should more or less have the same result. Can anyone show me what to do to fix the problem in the broken code above so that it stops throwing an error message?

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  • Why can I check some event handlers for null, some not?

    - by Inno
    Hi, I have a ugly piece of code that adds event handlers. The problem is, if the code is called multiple times, the event handlers are called multiple times. To solve the problem, I remove the event handler first and then add it. Now I've seen the following behaviour: Some event handlers can be checked like: if (object.event == null) { // // Code // } others of the form if (object.object.event == null) { // // Code // } I get a message like 'object.object.event' may only occur left of -= or +=. (Since I'm using a german version of visual studio, I don't know the correct translation to english). I have no idea why the behaviour looks this inconsequent so I would be grateful for some information on this. To be more specific: It's user control. if (myControl.Event == null) { // // works // } if (myControl.TreeView.NodeMouseClick == null) { // // doesn't work // }

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  • jquery, javascript and callback timing

    - by Blankman
    var blah = Some.Thing(data, function(a,b) { // code here }); Some.Thing = function(data, callback) { var a = Other.Thing(data, function() { }); }; My question is, will the part that says //code here fire ONLY after everything else and their callbacks fire? The //code here part seems to fire, and there seems to be some timing issue.

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  • Cannot call struct properties from HAML file

    - by Lander
    I have the following code in my controller: @nav_items = ActiveSupport::OrderedHash.new @nav_items[:home] = Struct::NavItem.new("Home", nil, "/", "icon-home") @nav_items[:about] = Struct::NavItem.new("About", nil, "/about", "icon-heart") @nav_items[:contact] = Struct::NavItem.new("Contact", nil, "/contact", "icon-envelope") if (current_user != nil && current_user.admin?) @nav_items[:admin_divider] = Struct::NavItem.new(nil, "divider-vertical", nil, nil) @nav_items[:admin] = Struct::NavItem.new("Admin", nil, "/admin", "") end And the following in my view: - @nav_items.each do |nav_item| %li{ :class => nav_item[:class] } %a{ :href => nav_item[:link] }= nav_item[:text] And my struct definition: Struct.new("NavItem", :text, :class, :link, :icon_class) I'm relatively new to Ruby, Rails, and HAML, but in another project using ERB rendering, code like that worked fine. I've tried referencing properties by doing something like nav_item.link as well, but that still does not work. The error I get with my current code is: Symbol as array index By using code like nav_item.link: undefined method `link' for #< Array:0x126970ff0 As this is my first time using HAML, I'm not too sure what I'm doing wrong.

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  • Question about a C macro expansion

    - by holydiver
    I generally have ignored using macros while writing in C but I think I know fundamentals about them. While i was reading the source code of list in linux kernel, i saw something like that: #define LIST_HEAD_INIT(name) { &(name), &(name) } #define LIST_HEAD(name) \ struct list_head name = LIST_HEAD_INIT(name) (You can access the remaining part of the code from here.) I didn't understand the function of ampersands(I don't think they are the address of operands here) in LIST_HEAD_INIT and so the use of LIST_HEAD_INIT in the code. I'd appreciate if someone can enlighten me.

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