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  • linq Except and custom IEqualityComparer

    - by Joe
    I'm trying to implement a custom comparer on two lists of strings and use the .Except() linq method to get those that aren't one one of the lists. The reason I'm doing a custom comparer is because I need to do a "fuzzy" compare, i.e. one string on one list could be embedded inside a string on the other list. I've made the following comparer ` public class ItemFuzzyMatchComparer : IEqualityComparer { bool IEqualityComparer<string>.Equals(string x, string y) { return (x.Contains(y) || y.Contains(x)); } int IEqualityComparer<string>.GetHashCode(string obj) { if (Object.ReferenceEquals(obj, null)) return 0; return obj.GetHashCode(); } } ` When I debug, the only breakpoint that hits is in the GetHashCode() method. The Equals() never gets touched. Any ideas?

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  • WPF How to stop animation from a thread in background worker

    - by toni
    Hi! I have a task that takes a long time. I do it with a background worker thread and before start it, since Do_Work I begin an animation over a label and when task finishes, I stop it in RunWorkerCompleted but I received an error because I try to begin/stop animation in the background thread that is not the owner. How can I do this, I mean to begin/stop animation in the background worker? thanks!

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  • Unable to understand "A field initializer cannot reference the nonstatic field" Error?

    - by Subhen
    Hi, I am getting the error "A field initializer cannot reference the nonstatic field", While My code is as below: Object selectedItem = PageVariables.slectedItemData; MyClass selectedItems = (MyClass)selectedItem; But the same thing works if assign the value at the constructor or in a different method , like below: public partial class MusicPlayer : Page { Object selectedItem = PageVariables.slectedItemData; public MusicPlayer() { InitializeComponent(); MyClass selectedItems = (MyClass)selectedItem; } } I am just trying to understand what is the difference, Why it is looking for a static varaible declaration(in 1st case) while doesn't look for it while in a constructor or a different method!!!

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  • Java .doc generation

    - by bozo
    Hi, anyone knows an easy method to generate mail merge .doc file from Java? So, I want to create a Word (95/97) document in Word, put some simple placeholders in it (only single value, no iterators and other advanced tags) like the ones used with mailmerge option, and then at runtime replace those placeholders with values from Java. One option is to use Jasperreports, but this would require that I create exact replica of non-trivial Word document in Jasper format, which is not easy and is hard to change later. Is there some method of filling placeholders in Word from Java, which does not require low-level document alteration with positioning and others low-level .doc tags from code, but something like this: docPreparer.fillPlaceholder('placeholder1', 'my real value from runtime'); Some CRMs do this via ActiveX control for internet explorer, and it works great (they use Word's mailmerge) but I need an all-Java solution. Ideas? Thanks, Bozo

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  • Cooling for a small server room

    - by John Zwinck
    I have a server room about 12 feet square with an unfinished ceiling (exposed ducts and wiring). It houses a few servers (about ten, 1U and 2U) and some networking gear (four 1U switches, three routers, three modems, two cable boxes). With the door closed, it runs around 80 degrees Fahrenheit with half the servers turned on. When I turned on all the servers it reached 86 before I chickened out and propped the door open. The room is adjacent to air-conditioned office space, but does not itself have dedicated air conditioning. The ventilation for this room seems to be limited to one duct coming in at ceiling level, with a powered fan to draw air in, and one duct at ceiling level to allow air to flow out (it seems like it may just go into the drop ceiling cavity in the adjacent room). The adjacent office space stays fairly cool, but I'd prefer not to leave the door propped open all the time. There is both 110v and 208v service in the room, and plenty of power available. But there are no windows, and no floor drains (in a pinch we might be able to run a condensation hose through a small hole we'd drill in the wall to a nearby sink area, but only if absolutely necessary). I've considered portable A/C units, but I'm not sure on sizing and a lot less sure how we would run the exhaust hose(s). I suppose we could point one at the existing room exhaust duct (air return), but substantially modifying the duct is probably a no-no. I've also considered installing a fan box in the door of the room, but I'm concerned that this will only drop the temperature a little. Even right now, with all the equipment on, the room is at 83 degrees with the door open. And the main building A/C turns off daily at 6 PM to conserve energy, so the adjacent room temperature rises at night. How would you cool this room? Let's say the goal is to bring the temperature with everything running from a steady state of around 90 degrees down to 75 (equivalently, to offset the heat produced by ten 1U servers).

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  • Scala type conversion error, need help!

    - by Mansoor Ashraf
    Hello I am getting a weird error when trying to use a Java map in Scala. This is the snippet of code val value:Double = map.get(name) if (value eq null) map.put(name, time) else map.put(name, value + time) the map is defined as val map=new ConcurrentHashMap[String,Double] and this is the error I am getting error: type mismatch; found : Double required: ?{val eq: ?} Note that implicit conversions are not applicable because they are ambiguous: both method double2Double in object Predef of type (Double)java.lang.Double and method doubleWrapper in object Predef of type (Double)scala.runtime.RichDouble are possible conversion functions from Double to ?{val eq: ?} if (value eq null) map.put(name, time) I am new to Scala so I am having a hard time parsing the stacktrace. Any help would be appreciated

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  • Code to apply expression tree directly to List

    - by Gamma Vega
    Is there a method call in Linq that will apply a expression tree directly on a List<V>? For instance, if I have a expression tree that is built on Order type, and i have a collection of List<Order> items on which i need to apply this expression. I am looking something similar to: class OrderListStore : IQueryable<V>, <other interfaces required to implement custom linq provider> { List<Order> orders; public Expression Expression { get { return Expression.Constant(this); } } IEnumerator<V> IEnumerable<V>.GetEnumerator() { //Here I need to have a method that will take the existing expression //and directly apply on list something like this .. Expression.Translate(orders); } } Any help in this regard is highly appreciated.

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  • Learning Treetop

    - by cmartin
    I'm trying to teach myself Ruby's Treetop grammar generator. I am finding that not only is the documentation woefully sparse for the "best" one out there, but that it doesn't seem to work as intuitively as I'd hoped. On a high level, I'd really love a better tutorial than the on-site docs or the video, if there is one. On a lower level, here's a grammar I cannot get to work at all: grammar SimpleTest rule num (float / integer) end rule float ( (( '+' / '-')? plain_digits '.' plain_digits) / (( '+' / '-')? plain_digits ('E' / 'e') plain_digits ) / (( '+' / '-')? plain_digits '.') / (( '+' / '-')? '.' plain_digits) ) { def eval text_value.to_f end } end rule integer (( '+' / '-' )? plain_digits) { def eval text_value.to_i end } end rule plain_digits [0-9] [0-9]* end end When I load it and run some assertions in a very simple test object, I find: assert_equal @parser.parse('3.14').eval,3.14 Works fine, while assert_equal @parser.parse('3').eval,3 raises the error: NoMethodError: private method `eval' called for # If I reverse integer and float on the description, both integers and floats give me this error. I think this may be related to limited lookahead, but I cannot find any information in any of the docs to even cover the idea of evaluating in the "or" context A bit more info that may help. Here's pp information for both those parse() blocks. The float: SyntaxNode+Float4+Float0 offset=0, "3.14" (eval,plain_digits): SyntaxNode offset=0, "" SyntaxNode+PlainDigits0 offset=0, "3": SyntaxNode offset=0, "3" SyntaxNode offset=1, "" SyntaxNode offset=1, "." SyntaxNode+PlainDigits0 offset=2, "14": SyntaxNode offset=2, "1" SyntaxNode offset=3, "4": SyntaxNode offset=3, "4" The Integer... note that it seems to have been defined to follow the integer rule, but not caught the eval() method: SyntaxNode+Integer0 offset=0, "3" (plain_digits): SyntaxNode offset=0, "" SyntaxNode+PlainDigits0 offset=0, "3": SyntaxNode offset=0, "3" SyntaxNode offset=1, "" Update: I got my particular problem working, but I have no clue why: rule integer ( '+' / '-' )? plain_digits { def eval text_value.to_i end } end This makes no sense with the docs that are present, but just removing the extra parentheses made the match include the Integer1 class as well as Integer0. Integer1 is apparently the class holding the eval() method. I have no idea why this is the case. I'm still looking for more info about treetop.

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  • Does C# have an equivalent to Scala's structural typing?

    - by Tom Morris
    In Scala, I can define structural types as follows: type Pressable { def press(): Unit } This means that I can define a function or method which takes as an argument something that is Pressable, like this: def foo(i: Pressable) { // etc. The object which I pass to this function must have defined for it a method called press() that matches the type signature defined in the type - takes no arguments, returns Unit (Scala's version of void). I can even use the structural type inline: def foo(i: { def press(): Unit }) { // etc. It basically allows the programmer to have all the benefits of duck typing while still having the benefit of compile-time type checking. Does C# have something similar? I've Googled but can't find anything, but I'm not familiar with C# in any depth. If there aren't, are there any plans to add this?

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  • HttpWebRequest socket operation during WPF binding in a property getter

    - by wpfwannabe
    In a property getter of a C# class I am doing a HTTP GET using HttpWebRequest to some https address. WPF's property binding seems to choke on this. If I try to access the property in a simple method e.g. Button_Clicked, it works perfectly. If I use WPF binding to access the same property, the app seems to be blocked on a socket's recv() method indefinitely. Is it a no-no to do this sort of thing during binding? Is app in some special state during binding? Is there an easy way for me to overcome this limitation and still maintain the same basic idea?

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  • jQuery plug-in with additional methods.

    - by Kieron
    I've a jQuery plug-in that operates on some ULs, adding and removing classes etc. During the life-cycle of the page, I'll need to add/ remove some classes in code, and as my plug-in needs to perform some additional operations when this happens I came up with the following: // This is the initialiser method... $.fn.objectBuilder = function (options) {...}; // These are the two new methods I need. $.fn.objectBuilder.setSelected(element) {...}; $.fn.objectBuilder.removeSelected() {...}; I'd then like to call them like this: $("#ob1").objectbuilder.removeSelected(); Any thoughts? Thanks, Kieron edit I suppose what I'm asking is, whats the best way of adding additional methods to a jQuery plug-in where it'll have access to the root object, in this case #obj when the method is called.

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  • How to make and use first object in Objective C to store sender tag

    - by dbonneville
    I started with a sample program that simply sets up a UIView with some buttons on it. Works great. I want to access the sender tag from each button and save it. My first thought was to save it to a global variable but I couldn't get it to work right. I thought the best way would be to create an object with one property and synthesize it so I can get or set it as needed. First, I created GlobalGem.h: #import <Foundation/Foundation.h> @interface GlobalGem : NSObject { int gemTag; } @property int gemTag; -(void) print; @end Then I created GlobalGem.m: #import "GlobalGem.h" @implementation GlobalGem @synthesize gemTag; -(void) print { NSLog(@"gemTag value is %i", gemTag); } @end The sample code I worked from doesn't do anything I can see in "main" where the program initializes. They just have their methods and are set up to handle IBOutlet actions. I want to use this object in the IBOutlet methods. But I don't know where to create the object. In the viewDidLoad, I tried this: GlobalGem *aGem = [[GlobalGem alloc]init]; [aGem print]; I added reference to the .h file of course. The print method works. In the nslog I get "gemTag value is 0". But now I want to use the instance aGem in some of the IBOutlet actions. For instance, if I put this same method in one of the outlet actions like this: - (IBAction)touchButton:(id)sender { [aGem print]; } ...I get a build error saying that "aGem is undeclared". Yes, I'm new to objective c and am very confused. Is the instance I created, aGem, in the viewDidLoad not accessible outside of that method? How would I create an instance of a Class that I can store a variable value that any of the IBOutlet methods can access? All the buttons need to be able to store their sender tag in the instance aGem and I'm stuck. As I mentioned earlier, I was able to write the sender tag to a global variable I declared in the UIView .h file that came with the program, but I ran into issues using it. Where am I off?

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  • Problem with jQuery selector and MasterPage

    - by Daemon
    Hi, I have a problem with a master page containing a asp:textbox that I'm trying to access using jQuery. I have read lot sof thread regarding this and tried all the different approaches I have seen, but regardless, the end result end up as Undefined. This is the relevant part of the MasterPage code: <p><asp:Label ID="Label1" AssociatedControlID="osxinputfrom" runat="server">Navn</asp:Label><asp:TextBox CssClass="osxinputform" ID="osxinputfrom" runat="server"></asp:TextBox></p> When I click the button, the following code from a jQuery .js file is run: show: function(d) { $('#osx-modal-content .osxsubmitbutton').click(function (e) { e.preventDefault(); if (OSX.validate()){ $('#osx-modal-data').fadeOut(200); d.container.animate( {height:80}, 500, function () { $('#osx-modal-data').html("<h2>Sender...</h2>").fadeIn(250, function () { $.ajax({ type: "POST", url: "Default.aspx/GetDate", data: "{'from':'" + $("#osxinputfrom").val() + "','mailaddress':'" + $("#osxinputmail").val() + "','header':'Test3','message':'Test4'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(msg) { $('#osx-modal-data').fadeOut(200, function () { $('#osx-modal-data').html('<h2>Meldingen er sendt!</h2>'); $('#osx-modal-data').fadeIn(200); }); }, error: function(msg){ $('#osx-modal-data').fadeOut(200, function () { $('#osx-modal-data').html('<h2>Feil oppstod ved sending av melding!</h2>'); $('#osx-modal-data').fadeIn(200); }); } }); }); } ); } else{ $('#osxinputstatus').fadeOut(250, function () { $('#osxinputstatus').html('<p id="osxinputstatus">' + OSX.message + '</a>'); $('#osxinputstatus').fadeIn(250); }); } }); }, So the problem here is that $("#osxinputfrom").val() evaluated to Undefined. I understand that the masterpage will add some prefix to the ID, so I tried using the ID from the page when it's run that ends up as ct100_osxinputfrom, and I also tried some other hinds that I found while searching like $("#<%=osxinputfrom.ClientID%"), but it ends up as Undefined in the method that is called from the jQuery ajax method anyway. The third and fourth parameters to the ajay function that is hardcoded as Test3 and Test4 comes fine in the C# backend method. So my question is simply: How can I rewrite the jQuery selector to fetch the correct value from the textbox? (before I used master pages it worked fine by the way) Best regards Daemon

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  • How UIWindow#addSubview can make memory leak?

    - by Jakub
    Hello, I started to learn using Instrument, but I cannot figure it out. After I start my application, the UI shows up, I do nothing and after few seconds I can see memory leak detected: When I have a look at the second leak I can see the following stack: When I double click on the cell related to my code I can see that it is pointing to the following line of code: [window addSubview:newPostUIViewController.view]; from the method: - (void)applicationDidFinishLaunching:(UIApplication *)application { //creating view controller newPostUIViewController = [[NewPostUIViewController alloc] initWithNibName:@"NewPostView" bundle:nil]; newPostUIViewController.title = @"Post it!"; [window addSubview:newPostUIViewController.view]; // Override point for customization after application launch [window makeKeyAndVisible]; } I wonder, how this can be a reason of a leak? I release newPostUIViewController in the dealloc method of PostItAppDelegate class. Any ideas how this could be explained?

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  • Java Windows Service with Procrun, StopMethod problem

    - by mcdon
    My Java class contains the following methods: public static void main(String[] argv) //start the service public static void stop() //stop the service I'm using Procrun from Apache Commons Daemon to setup the Java class as a Windows Service. I get an error when I try to stop the service "[618 javajni.c] [error] Static method 'void main(String[])' in Class com/caphyon/service/JavaService not found". The problem is I am trying to call the stop method when the service is shutting down, but it appears to override the StopMethod with 'void main(String[])'. Here are the stop and start parameters I am using when setting up the service: prunsrv.exe //US//JavaService --StartClass=com.caphyon.service.JavaService --StartMode=jvm --StartPath="C:\JavaService" prunsrv.exe //US//JavaService --StopClass=com.caphyon.service.JavaService --StopMode=jvm --StopPath="C:\JavaService" --StopMethod="void stop()" How do I set the StopMethod prunsrv will call when shutting down the service?

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  • RSpec mocking a nested model in Rails - ActionController problem

    - by emson
    Hi All I am having a problem in RSpec when my mock object is asked for a URL by the ActionController. The URL is a Mock one and not a correct resource URL. I am running RSpec 1.3.0 and Rails 2.3.5 Basically I have two models. Where a subject has many notes. class Subject < ActiveRecord::Base validates_presence_of :title has_many :notes end class Note < ActiveRecord::Base validates_presence_of :title belongs_to :subject end My routes.rb file nests these two resources as such: ActionController::Routing::Routes.draw do |map| map.resources :subjects, :has_many => :notes end The NotesController.rb file looks like this: class NotesController < ApplicationController # POST /notes # POST /notes.xml def create @subject = Subject.find(params[:subject_id]) @note = @subject.notes.create!(params[:note]) respond_to do |format| format.html { redirect_to(@subject) } end end end Finally this is my RSpec spec which should simply post my mocked objects to the NotesController and be executed... which it does: it "should create note and redirect to subject without javascript" do # usual rails controller test setup here subject = mock(Subject) Subject.stub(:find).and_return(subject) notes_proxy = mock('association proxy', { "create!" => Note.new }) subject.stub(:notes).and_return(notes_proxy) post :create, :subject_id => subject, :note => { :title => 'note title', :body => 'note body' } end The problem is that when the RSpec post method is called. The NotesController correctly handles the Mock Subject object, and create! the new Note object. However when the NoteController#Create method tries to redirect_to I get the following error: NoMethodError in 'NotesController should create note and redirect to subject without javascript' undefined method `spec_mocks_mock_url' for #<NotesController:0x1034495b8> Now this is caused by a bit of Rails trickery that passes an ActiveRecord object (@subject, in our case, which isn't ActiveRecord but a Mock object), eventually to url_for who passes all the options to the Rails' Routing, which then determines the URL. My question is how can I mock Subject so that the correct options are passed so that I my test passes. I've tried passing in :controller = 'subjects' options but no joy. Is there some other way of doing this? Thanks...

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  • django image upload forms

    - by gramware
    I am having problems with django forms and image uploads. I have googled, read the documentations and even questions ere, but cant figure out the issue. Here are my files my models class UserProfile(User): """user with app settings. """ DESIGNATION_CHOICES=( ('ADM', 'Administrator'), ('OFF', 'Club Official'), ('MEM', 'Ordinary Member'), ) onames = models.CharField(max_length=30, blank=True) phoneNumber = models.CharField(max_length=15) regNo = models.CharField(max_length=15) designation = models.CharField(max_length=3,choices=DESIGNATION_CHOICES) image = models.ImageField(max_length=100,upload_to='photos/%Y/%m/%d', blank=True, null=True) course = models.CharField(max_length=30, blank=True, null=True) timezone = models.CharField(max_length=50, default='Africa/Nairobi') smsCom = models.BooleanField() mailCom = models.BooleanField() fbCom = models.BooleanField() objects = UserManager() #def __unicode__(self): # return '%s %s ' % (User.Username, User.is_staff) def get_absolute_url(self): return u'%s%s/%s' % (settings.MEDIA_URL, settings.ATTACHMENT_FOLDER, self.id) def get_download_url(self): return u'%s%s/%s' % (settings.MEDIA_URL, settings.ATTACHMENT_FOLDER, self.name) ... class reports(models.Model): repID = models.AutoField(primary_key=True) repSubject = models.CharField(max_length=100) repRecepients = models.ManyToManyField(UserProfile) repPoster = models.ForeignKey(UserProfile,related_name='repposter') repDescription = models.TextField() repPubAccess = models.BooleanField() repDate = models.DateField() report = models.FileField(max_length=200,upload_to='files/%Y/%m/%d' ) deleted = models.BooleanField() def __unicode__(self): return u'%s ' % (self.repSubject) my forms from django import forms from django.http import HttpResponse from cms.models import * from django.contrib.sessions.models import Session from django.forms.extras.widgets import SelectDateWidget class UserProfileForm(forms.ModelForm): class Meta: model= UserProfile exclude = ('designation','password','is_staff', 'is_active','is_superuser','last_login','date_joined','user_permissions','groups') ... class reportsForm(forms.ModelForm): repPoster = forms.ModelChoiceField(queryset=UserProfile.objects.all(), widget=forms.HiddenInput()) repDescription = forms.CharField(widget=forms.Textarea(attrs={'cols':'50', 'rows':'5'}),label='Enter Report Description here') repDate = forms.DateField(widget=SelectDateWidget()) class Meta: model = reports exclude = ('deleted') my views @login_required def reports_media(request): user = UserProfile.objects.get(pk=request.session['_auth_user_id']) if request.user.is_staff== True: repmedform = reportsForm(request.POST, request.FILES) if repmedform.is_valid(): repmedform.save() repmedform = reportsForm(initial = {'repPoster':user.id,}) else: repmedform = reportsForm(initial = {'repPoster':user.id,}) return render_to_response('staffrepmedia.html', {'repfrm':repmedform, 'rep_media': reports.objects.all()}) else: return render_to_response('reports_&_media.html', {'rep_media': reports.objects.all()}) ... @login_required def settingchng(request): user = UserProfile.objects.get(pk=request.session['_auth_user_id']) form = UserProfileForm(instance = user) if request.method == 'POST': form = UserProfileForm(request.POST, request.FILES, instance = user) if form.is_valid(): form.save() return HttpResponseRedirect('/settings/') else: form = UserProfileForm(instance = user) if request.user.is_staff== True: return render_to_response('staffsettingschange.html', {'form': form}) else: return render_to_response('settingschange.html', {'form': form}) ... @login_required def useradd(request): if request.method == 'POST': form = UserAddForm(request.POST,request.FILES ) if form.is_valid(): password = request.POST['password'] request.POST['password'] = set_password(password) form.save() else: form = UserAddForm() return render_to_response('staffadduser.html', {'form':form}) Example of my templates {% if form.errors %} <ol> {% for field in form %} <H3 class="title"> <p class="error"> {% if field.errors %}<li>{{ field.errors|striptags }}</li>{% endif %}</p> </H3> {% endfor %} </ol> {% endif %} <form method="post" id="form" action="" enctype="multipart/form-data" class="infotabs accfrm"> {{ repfrm.as_p }} <input type="submit" value="Submit" /> </form>

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  • What is a "pluggable" API?

    - by ngm
    I'm evaluating a piece of software (uPortal), and it lists one of its features as "Pluggable APIs." I know what an API is, but have not heard the pluggable term before. What does it mean for an API to be "pluggable"?

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  • Making a "Fuzzy border" in Silverlight 3.0

    - by skb
    I would like to have fuzzy looking border around my Canvas control. Basically, I am creating a Print Preview screen, and I want it to look almost exactly like the one in Word 2010. In this, there is a thin gray line, a thin orange line and then a fuzzy gradient around the outside of the page. Check it out and you will see what I mean. Can anyone tell me how I can do this with my Canvas control?

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  • What is the point of JComboBox's getSelectedItem()?

    - by Chris Cooper
    I just read the JavaDoc for JComboBox (I promise I have a life... I wasn't reading through for fun. =P), and I think the problems I'm having with my program can be attributed to the getSelectedItem() method. The documentation says: Returns the current selected item. If the combo box is editable, then this value may not have been added to the combo box with addItem, insertItemAt or the data constructors. If you can't get values that were added with those methods or with the constructor, of what use is the method? And how can I get the value from an "editable" JComboBox? Link to JavaDoc: http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JComboBox.html#getSelectedItem()

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  • java - call web service operation - wrong return type

    - by user1639680
    i have a simple web service with one method that returns List<org.company.data.mp> i've created a simple web service client and specified a web service with wsdl. in netbeans i try to call a web service operation: right click, insert code, ... and i pick my web service operation. the code gets inserted but the method's return type is not List<org.company.data.mp> but it is List<org.company.server.mp>! i don't get it.. in the package "server" there is no class called mp! i check the implementation class of my web service - it says the return type is ...data.mp not ...server.mp

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  • Blackberry SDK 4.2.1 not available in Eclipse Plug-in 1.1

    - by Dachmt
    Hi there, I need to develop an application for Blackberry Java SDK 4.2.1 and above. I'm currently under Eclipse Classic 3.5, and I have installed the BlackBerry Java Plug-in for Eclipse v1.1, with all the Blackberry Java SDK available, versions 4.5 to 5.0. Unfortunately, there isn't any SDK available under 4.5. Is anyone know how to solve this problem? I mean, developing for Blackberry Java SDK 4.2.1 with Eclipse IDE. Thank you.

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  • Arduino - AdHoc Network Setup

    - by methodMan
    I`m currently working with an arduino trying to build an adhoc network to which a device can connect to and send web request to. The problem I am currently having is that I can only set up one connection and then when that connection is terminated (client.stop()) all subsequent connections are not picked up by the server, even a curl command just sits there spinning. The first connection I start when I reset the server works fine and I am able to talk to the server; but after that, the arduino can no longer find new clients (even though it's trying with the library given). I`m using the sparkfun library for the wifly shield cloned from github, along with an Arduino Uno. My current code is based off their default example 'WiFly_AdHoc_Example' but I had to remove a few things to get the network to start up which might be the cause of this problem. Here is the .ino file that I am running. #include <SPI.h> #include <WiFly.h> //#include <SoftwareSerial.h> //SoftwareSerial mySerial( 5, 4); //Part from example not used(see below) WiFlyServer server(80); void setup() { Serial.begin(9600); //The code below is from the example but when I run it the WiFly will hang // on Wifly.begin(). Without it the WiFly starts up fine but only works for // one request. //mySerial.begin(9600); //WiFly.setUart(&mySerial); // Tell the WiFly library that we are not //using the SPIUart Serial.println("**************Starting WiFly**************"); // Enable Adhoc mod WiFly.begin(true); Serial.println("WiFly started, creating network."); if (!WiFly.createAdHocNetwork("wifly")) { Serial.print("Failed to create ad hoc network."); while (1) { // Hang on failure. } } Serial.println("Network created"); Serial.print("IP: "); Serial.println(WiFly.ip()); Serial.println("Starting Server..."); server.begin(); Serial.print("Server started, waiting for client."); } void loop() { delay(200); WiFlyClient client = server.available(); if (client) { Serial.println("Client Found."); // a string to store received commands String current_command = ""; while (client.connected()) { if (client.available()) { //Gets a character from the sent request. char c = client.read(); if (c=='#' || c=='\n') //End of extraneous output { current_command = ""; } else if(c!= '\n') { current_command+=c; } if (current_command== "get") { // output the value of each analog input pin for (int i = 0; i < 6; i++) { client.print("analog input "); client.print(i); client.print(" is "); client.print(analogRead(i)); client.println("<br />"); } } else if(current_command== "hello") { client.println("Hello there, I'm still here."); } else if (current_command== "quit") { client.println("Goodbye..."); client.stop(); current_command == ""; break; } else if (current_command == "*OPEN*") { current_command == ""; } } } // give the web browser time to receive the data delay(200); // close the connection client.stop(); } } If anyone understands this better then I (I`m new to arduino) please leave some helpful comments. Or just help me out on getting this little web server up and running so that I can hit it with more then one request. If there is any other helpful information I can provide please let me know. Thanks for reading and hope you can help. EDIT: Using telnet I can successfully connect (the first time) and send commands to the arduino including one to terminate the connection (calls the client.stop() method). But when I try to reconnect though telnet, it says the connection was successful but on the arduino it's still looping thinking the client is still false. WHAT??? I know right, I'm getting mixed messages from telnet vs arduino. None of the commands work obviously since the ardunio is still looping waiting for a client that evaluates to true. I'm gonna take a look at WiFlyServer from the library I imported and see if I can dig up the problem because somehow that server.available() method isn't finding new clients. Noticing a lot of TODO's in the library code.... EDIT: So I found the reason for the problem, it was in WiFlyServer.cpp file from the sparkfun library. The code that was causing the reconnect issue was infact in the server.availible() method. Right at the top of the method, there is a check: // TODO: Ensure no active non-server client connection. if (!WiFly.serverConnectionActive) { activeClient._port = 0; } For some reason when I comment this out, I can reconnect fine and everything works as it should. I will now dive into the library and see if I can fix this, I'm not exactly sure what this is doing but it gets called when the server connection is not active and is somehow blocking subsequent connections. Does anyone have any ideas how I might get to the root of this problem without using this commenting hack? Please help, no-one has commented or answered yet! Don't you want to join in on the fun???

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  • multiple records using the select_tag

    - by JZ
    I'm attempting to display multiple records, with each record displaying its own selection box. I would like to submit this form and pass a hash, having the Add.id function as the key of the hash, and the selection box option pass as the information in the hash. How could I fix my code? is this even possible with the select_tag method? <%= form_tag yardsign_adds_path, :method => :post do %> <%= select_tag "support_code[]", options_for_select([[ "1 - Strong Supporter", add.id ], [ "2 - Likely Voter" ], [ "3 - Undecided" ], [ "4 - Likely Opposed" ], [ "5 - Strongly Opposed" ]]) %> <%= submit_tag "Update" %> <% end %> Current terminal output: Started POST "/adds/yardsign" for 127.0.0.1 at 2010-04-17 01:36:03 Processing by AddsController#yardsign as HTML Parameters: {"commit"=>"Update", "authenticity_token"=>"VQ2jVfzHI7pB+87lQa9NWqvUK3zwJWiJE7CwAnIewiw=", "support_code"=>["1", "3 - Undecided", "3 - Undecided"]}

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