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• Why I am forced to write the (Data Constructor) name with first letter in small case?

  - by Optimight

  Why I am forced to write "liOfLi" in place of "LiOfLi"? Please guide. code in baby.hs LiOfLi = [ [1,3,4,5,6,8], [ 12, 13, 15, 16, 19, 20], [23, 24, 25, 45, 56] ] ghci response: ghci :l baby [1 of 1] Compiling Main ( baby.hs, interpreted ) Failed, modules loaded: none. ghci baby.hs:29:1: Not in scope: data constructor `LiOfLi' When changing the initial letter to smaller case code in baby.hs liOfLi = [ [1,3,4,5,6,8], [ 12, 13, 15, 16, 19, 20], [23, 24, 25, 45, 56] ] ghci response: ghci :l baby [1 of 1] Compiling Main ( baby.hs, interpreted ) Ok, modules loaded: Main. Following are the SO questions I refered but I failed to understand the rules/ logic and get the answer for (my) abovementioned question. Why does Haskell force data constructor's first letter to be upper case? the variable names need to be lowercase. The official documentation related to this is at haskell.org/onlinereport/intro.html#namespaces – (the SO comment by) Chris Kuklewicz

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• Can we change <input type="file"> style?

  - by learner.php

  I tried to change the HTML form, input type file. Here is my code: HTML, form id = form <input class="upload_file" type="file" id="file" name="file" /> .CSS I tried both: .upload_button{ background: url('../images/upload_btn_bg.png') no-repeat; width: 200px; height: 40px; } #form input[type=file]{ background: url('../images/upload_btn_bg.png') no-repeat; width: 200px; height: 40px; } None of both of those methods works. I did see from some website, like facebook, youtube, google or twitter, they have different style. Wonder how they do it.

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• VB.NET Inputbox - How to identify when the Cancel Button is pressed?

  - by The Sasquatch

  I have a simple windows application that pops up an input box for users to enter in a date to do searches. How do I identify if the user clicked on the Cancel button, or merely pressed OK without entering any data as both appear to return the same value? I have found some examples of handling this in VB 6 but none of them really function in the .NET world. Ideally I would like to know how to handle the empty OK and the Cancel seperately, but I would be totally ok with just a good way to handle the cancel.

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• Running CodeIgniter cron on localhost

  - by stef

  I'm trying to get a cron job to run every 5 min on my localhost. Using the Cronnix app I entered the following command 0,5 * * * * root curl http://localhost:8888/site/ > /dev/null The script runs fine when I visit http://localhost:8888/site/ in my browser. I've read some stuff about getting CI to run on Cron, using wget and various other options but none make a lot of sense. In another SO post I found the following command wget -O - -q -t 1 http://www.example.com/cron/run What is the "-O - -q -t 1" syntax exactly? Are there other options?

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• jquery toggle did not work properly...

  - by pradeep

  function advanced_search() { $("#advanced_link").toggle( function(){ $('#advanced_link').text('Hide - Advanced Search'); $('.advanced_search').show(); }, function(){ $('#advanced_link').text('Show - Advanced Search'); $('.advanced_search').hide(); }); } this code worked for me..but when i tried to use the css property like function advanced_search() { $("#advanced_link").toggle( function(){ $('#advanced_link').text('Hide - Advanced Search'); $('.advanced_search').css('display','inline'); }, function(){ $('#advanced_link').text('Show - Advanced Search'); $('.advanced_search').css('display','none'); }); } it did not work...is there any thing wrong in second code...??

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• CSS bug in text input field - MSIE7

  - by Uri Bruck

  I have an input text in a form that has a problem in MSIE7. When the text field is filled and I continue typing, the background starts scrolling left along with the text. This is the form when the text field is filled http://img155.imageshack.us/i/screen2rl.jpg/ The background image, a white rectangle with rounded corners, scrolls left with the text, leaving the black background. This is the CSS for this text field: border: none; background: url('/wp-content/themes/pokerbuddy/images/field.png') top left no-repeat; width: 100px; height: 20px; padding: 0px; font-size: 80%; color: #399; display:inline; Is there any way to solve this in MSIE7?

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• What exactly is GRASP's Controller about?

  - by devoured elysium

  What is the idea behind Grasp's Controller pattern? My current interpretation is that sometimes you want to achieve something that needs to use a couple of classes but none of those classes could or has access to the information needed to do it, so you create a new class that does the job, having references to all the needed classes(this is, could be the information expert). Is this a correct view of what Grasp's Controller is about? Generally when googling or SO'ing controller, I just get results about MVC's (and whatnot) which are topics that I don't understand about, so I'd like answers that don't assume I know ASP.NET's MVC or something :( Thanks

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• asp.net impersonation identity: Where does it come from?

  - by Rising Star

  Here's a simple question I've been stuck on for a while. When I set < identity impersonate=true > in my web.config so that asp.net impersonates the logged on user automatically (or the anonymous account if not using Windows Authentication), where does the identity that asp.net impersonates come from? This document: http://msdn.microsoft.com/en-us/library/ff649264.aspx shows three places you can retrieve information about the logged on user: Httpcontext.Current.user System.Threading.Thread.Current System.Security.Principal.WindowsIdentity.GetCurrent It seems that none of these locations consistently match the identity that gets impersonated when I set < identity impersonate=true > in web.config. I would like to know where the impersonated identity comes from.

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• How to get text in QlineEdit when QpushButton is pressed in a string?

  - by esafwan

  I have given my code below, have problem in implementing a function I want the text in lineedit with objectname 'host' in a string say 'shost'. when the user click the pushbutton with name 'connect'.How do i do it? I tried and failed. How to implement this function? import sys from PyQt4.QtCore import * from PyQt4.QtGui import * class Form(QDialog): def __init__(self, parent=None): super(Form, self).__init__(parent) le = QLineEdit() le.setObjectName("host") le.setText("Host") pb = QPushButton() pb.setObjectName("connect") pb.setText("Connect") layout.addWidget(le) layout.addWidget(pb) self.setLayout(layout) self.connect(pb, SIGNAL("clicked()"),self.button_click) self.setWindowTitle("Learning") def button_click(self): #i want the text in lineedit with objectname #'host' in a string say 'shost'. when the user click # the pushbutton with name connect.How do i do it? # I tried and failed. How to implement this function? app = QApplication(sys.argv) form = Form() form.show() app.exec_() Now how do i implement the function "def button_click(self):" ? I have just started with pyQt!

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• How do I pass objects through a _url based on a routing in rails?

  - by Angela

  I want to pass the attributes associated with two objects into a path created from a route. In this case, the _url is skip_contact_letter_url. contact_letter and letter are passed through a render partial. The clip below resides in the partial. <%= link_to_remote "Skip Letter Remote #{contact_letter}", :url => skip_contact_letter_url(contact_letter, letter), :update => "update-area-#{contact_letter.id}-#{letter.id}" %> <span id='update-area-<%="#{contact_letter.id}-#{letter.id}"%>'> </span> The route I created looks like this: map.resources :contact_letters, :member => {:skip => :post} And the controller looks like this: def skip @contact_letter = ContactLetter.new(params[:all]) @contact_letter.status = "skipped" @contact_letter.date_sent = Date.today #@contact_letter.date_created = Date.today if @contact_letter.save render :text => 'This letter was skipped!' end end When I look at the console, none of the parameters from contact_letter or letter get passed through.

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• accessing div inside the td using jquery

  - by azamsharp

  not sure why I find this so difficult. Here is the html code: <tr> <td>FirstName 9</td><td>LastName 9</td><td> <a href="#" id="linkSponsorMessage">View</a> </td><td> <div class="divSponsorMessage" style="display:none"> Greetings FirstName 9, LastName 9! </div> </td> </tr> I need to access the when click on the anchor link using JQuery. UPDATE: I got to work: $("#linkSponsorMessage").parent("td").next("td").children("div") But is there a better way!!!

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• What is the proper way to check the previous value of a field before saving an object? (Using Django

  - by anonymous coward

  I have a Django Model with updated_by and an approved_by fields, both are ForeignKey fields to the built-in (auth) User models. I am aware that with updated_by, it's easy enough to simply over-ride the .save() method on the Model, and shove the request.user in that field before saving. However, for approved_by, this field should only ever be filled in when a related field (date_approved) is first filled in. I'm somewhat certain that I can check this logically, and fill in the field if the previous value was empty. What is the proper way to check the previous value of a field before saving an object? I do not anticipate that date_approved will ever be changed or updated, nor should there be any reason to ever update the approved_by entry. UPDATE: Regarding forms/validation, I should have mentioned that none of the fields in question are seen by or editable by users of the site. If I have misunderstood, I'm sorry, but I'm not sure how forms and validation apply to my question.

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• Is there any way to perform pre-/post-switch commands using TortoiseSVN?

  - by Steve

  We need to perform some tasks when switching from one Subversion branch to another using TortoiseSVN. Is there any way to, say, call a batch file before and after the switch? The only thing I can find are pre-/post-update and commit hooks, but none of those get executed when switching between branches. EDIT: I am looking for client-side hooks. TortoiseSVN has client-side hook scripts for pre-/post-update and commit, but nothing (that I can find) for pre-/post-switch. Initially, I thought adding hooks for client-side pre-/post-update would be executed when switching between branches, but this does not seem to be the case.

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• Android - BaseGameUtil Complicated Import

  - by Fabiow Quixadá

  I've seen many topics in stackoverflow, such as Cannot import BaseGameUtils (Eclipse weirdness) and Android: cannot import BaseGameUtils successfully in Eclipse but none resolved my problem. I've followed https://developer.android.com/google/play-services/setup.html#Setup - the Add Google Play Services to Your Project [Using Eclipse with ADT], I THINK my project correctly references the google play services lib since up to that point nothing wrong happened. Then, following https://developers.google.com/games/services/android/quickstart, I've downloaded BaseGameUtils but when I import the two projects [TypeANumber & BaseGameUtil], they came named as main and MainActivity. I've renamed BaseGameUtil as so and have marked it as lib and imported it to my project through Properties Android Library, but I can't extend extend a class from BaseGameUtil because it's not even suggested. Also, I have not installed Android L and Android 4.4W from SDK Manager in Eclipse, altough I think that's no the case. Can anyone please help in this? Thanks so much in advance

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• Extending ENUM valus inherited from base object

  - by Tim

  Hi, If I defined a ENUM in a base object with serveral default values. When I inherit from the base object I want to add more options the the ENUM list which are specific to the inheriting object. For example my base could have a ENUM called Direction with values: None ALL Stop Start I create a new class call Compass which inherits the base class and what to add the following to the ENUM Direction. North South East West I create a new class call Navigation which inherits the base class and what to add the following to the ENUM Direction. Left Right So, In my inheriting class haow do I extend the ENUM. I am using VB.NET. Regards

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• Map works, but throws a popup error at load complainig about wrong api key

  - by Filip

  Ok, I see a lot of people have this problem, but none answer I found either here or at stackoverflow. Problem: Map works super fine! But throws an error at load "This map needs a different api key... sign up at......" Already signed up, already got a key. On some forum post a guy told that in this case map loads twice, once with the wrong key, another with the right one. But Im sure my app loads it once and with the correct key. URL: http://ki.org.ua/ (it will redirect to /projects but I think that it aint a problem cuz i tested without redirection too) Thanks in advance for any suggestion or help.

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• Ubuntu Wired network(ethernet does not work)

  - by badnaam

  It was working just fine, until the other day I yanked it out. The wireless works just fine on the same router. If I login to a windows 7 instance on this dual boot laptop then the ehternet works just fine. So it's not a hardware, cable or router issue. The card even gets an ip, but I can't connect to the internet. Here are the details from route, iptables, ifconfig, ping etc. Any ideas? I have been struggling with this for day, none seems to have an answer. http://pastie.org/954816

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• Co-opt popular abandonware opensource project? Thoughts?

  - by Mike Bouck

  Here's the scenario: A popular open source project is used/loved by many but has become stale due to the fact that the last drop came out nearly a year ago. Many bugs/feature requests/fixes have been logged in the interim and everyone is getting by via downloading the trunk and building custom/private builds with the changes incorporated. The copyright is simple -- there is none and the code is in the public domain. The project owner spins the project as community open source and has setup a sourceforge site, but to date (5 years running now) has yet to accept one contributor. In otherwords the "community" is a community of one. The project owner takes great pride in the project and has obviously contributed a lot of time/effort but for whatever reason has has seemingly abandoned the project and is unresponsive when offers of help are made. So, the question, should the community fork the codebase, setup a new community site, and take matters in their own hands?

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• [as3] Movieclip.width returns higher value than Movieclip stage on Width.

  - by Sawrb

  I have a Movieclip on stage with nested movieclips inside. All referenced at 0,0. None of the child movieclips load any dynamic content, animate or have Masked Layers. It does have an input textfield in one of the child MCs. The parent MC shows 280 px width, while it returns 313 px with a .width trace. There is no code that alters the .width value of the parent MC at run-time. And the ParentMC on stage is not scaled (it is at 100% width/height). Any pointers, to what could be the reasons for the discrepancy in .width values on stage and on run-time? Its breaking the scaling code that follows.

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• Entity Framework: Attached Entities not Saving

  - by blog

  Hello: I can't figure out why calling SaveChanges() on the following code results in no changes to the objects I attached: // delete existing user roles before re-attaching if (accountUser.AccountRoles.Count > 0) { foreach (AccountRole role in accountUser.AccountRoles.ToList()) { accountUser.AccountRoles.Remove(role); } } // get roles to add List<int> roleIDs = new List<int>(); foreach (UserRole r in this.AccountRoles) { roleIDs.Add(r.RoleID); } var roleEntities = from roles in db.AccountRoles where roleIDs.Contains(roles.id) select roles; accountUser.AccountRoles.Attach(roleEntities); db.SaveChanges(); In the debugger, I see that the correct roleEntities are being loaded, and that they are valid objects. However, if I use SQL Profiler I see no UPDATE or INSERT queries coming in, and as a result none of my attached objects are being saved.

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• Jquery- Hide div

  - by Pankaj

  I have a div inside form something like <form> <div> showing some information here </div> <div id="idshow" style="display:none"> information here </div> </form> i am population information inside div(idshow) on some button click event. what i want whenever i ill click outside div(idshow), it should be hide. just like i click on menu then menu is display and when i click outside menu it goes hide. I need everything using jquery

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• [C++] Needed: A simple C++ container (stack, linked list) that is thread-safe for writing

  - by conradlee

  I am writing a multi-threaded program using OpenMP in C++. At one point my program forks into many threads, each of which need to add "jobs" to some container that keeps track of all added jobs. Each job can just be a pointer to some object. Basically, I just need the add pointers to some container from several threads at the same time. Is there a simple solution that performs well? After some googling, I found that STL containers are not thread-safe. Some stackoverflow threads address this question, but none form a consensus on a simple solution.

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• JQuery Tabs; Google Map is shown with just one tile

  - by java_dude

  Yes this problem is common and I have seen numerous solution on this site but none of them were helpful. I know that re-sizing will fix the problem. Not a jQuery expert and I don't know how to re-size the map after the page has been loaded and Headline 3 is active. I have created a JFiddle example. Any help is appreciated. http://jsfiddle.net/KhwZS/1300/ Thanks Ignore the top comment and the links provided by @Dr.Molle as these links do not provide the solution that I have been looking for, check out the solution I have accepted.

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• 3 div independently relative and top aligned

  - by Knu

  I have 3 div top aligned that should be relative to a previous div (not between them so i can't use floats or position:inline-block either). If you set display:none on 2 divs the last one shouldn't move. I can't use position:absolute because there's a relative footer underneath. I tried using a wrapper but it can't work cause the height of the divs is not fixed. The height of the wrapper gets completely ignored anyway (by the following footer) unless Im using relative children. vertical-align:top doesn't work either. Any ideas?

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• Toastr.js notifications as modal notfication

  - by Maxsteel

  I know it's not what toastr (or toast notifs in general) are meant to be used for, but I want to use them as a modal notification. My idea is following. On toast show: toastr.options.onShown = function() { //Create an overlay on the entire page} Overlay: #overlay { background-color: rgba(0, 0, 0, 0.8); z-index: 999; position: absolute; left: 0; top: 0; width: 100%; height: 100%; display: none; } And on toast close: toastr.options.onHidden = function() { //make overlay go away } Also, I'm setting timeout of toast to 0 so it won't disappear by itself. Question: I want the toast notification to stay atop the overlay and not behind it as overlay will cover everything. How can I do it?

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