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• C# GridView dynamically built columns with textboxes ontextchanged

  - by tnriverfish

  My page is a bulk order form that has many products and various size options. I've got a gridview that has a 3 static columns with labels. There are then some dynamically built columns. Each of the dynamically built columns have a textbox in them. The textbox is for quantity. Trying to either update the server with the quantity entered each time a textbox is changed (possibly ontextchanged event) or loop though each of the rows column by column and gather all the items that have a quantity and process those items and their quantities all at once (via button onclick). If I put the process that builds the GridView behind a if(!Page.IsPostBack) then the when a textchanged event fires the gridview only gets the static fields and the dynamic ones are gone. If I remove the if(!Page.IsPostBack) the process to gather and build the page is too heavy on processing and takes too long to render the page again. Some advice would be appreciated. Thanks

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• External XMPP component - Anyone know a Tutorial or Open Source Example please?

  - by gav

  Hi All, I want to run an XMPP server (Openfire) and register an external component to handle the messages it will recieve (using the Whack library). The external component will run my game logic and I will be using XMPP to send player moves to the server and status updates in the other direction. The bonus with XMPP is that we get built in chat for free. The trouble is, although Ignite look fairly established, I can't find a tutorial on how to write, register and debug an External XMPP component written with Whack, there are very few in general for that matter. I am not invested in either the server implementation or the External Component library, java is just my language of choice. If I was to move to Erlang or Scala or something it would have to be a very simple in that language. A single tutorial or example would go a long way here, I just need an basic External XMPP component pretty please! Kind regards, Gavin

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• Help me finish this Python self-challenge.

  - by Hamish Grubijan

  This is not a homework. I saw this article praising Linq library and how great it is for doing combinatorics stuff, and I thought to myself: Python can do it in a more readable fashion. After half hour of dabbing with Python I failed. Please finish where I left off. Also, do it in the most Pythonic and efficient way possible please. from itertools import permutations from operator import mul from functools import reduce glob_lst = [] def divisible(n): return (sum(j*10^i for i,j in enumerate(reversed(glob_lst))) % n == 0) oneToNine = list(range(1, 10)) twoToNine = oneToNine[1:] for perm in permutations(oneToNine, 9): for n in twoToNine: glob_lst = perm[1:n] #print(glob_lst) if not divisible(n): continue else: # Is invoked if the loop succeeds # So, we found the number print(perm) Thanks!

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• problem creating object "wscript.shell"

  - by sushant

  my script looks like: Dim WshShell, oExec Set WshShell = CreateObject("WScript.Shell") Set oExec = WshShell.Exec("cmd /c cd D:\d & D: & winzip32.exe -min -a D:\a") Do While oExec.Status = 0 WScript.Sleep 100 Loop WScript.Echo oExec.Status The idea was to use explorer to open these files. The problem I'm having though is on the line: Set WshShell = CreateObject("WScript.Shell") I keep getting the message ActiveX component can't create object: 'WScript.Shell' I'm totally confused because this exact same code runs fine if I write it in a .htm file. Why does my browser treat my .asp page differently than the .html file? How do i fix this problem?

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• How do I set DateTimeStamp on file after uploading to FTP?

  - by Anthony Brien

  I have an application that deploys game data files to different gaming consoles. If matching files on the users machine and the console have identical size and dates, they must not be re-deployed. On Xbox, this is easily accomplished because an XDK library used to upload files on the console allows me to set the date on the uploaded files to match the dates on the user's machine. On Ps3 however, I use an FTP service running on the console. I use WebClient.UploadFileAsync to upload files to the console. However, I cannot figure out how I can set the uploaded file's date timestamp, leaving me with only the file size to determine identical files which is unsafe. I was wondering if there was a way to set a file's date timestamp through the WebClient interface?

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• Django MultiWidget Phone Number Field

  - by Birdman

  I want to create a field for phone number input that has 2 text fields (size 3, 3, and 4 respectively) with the common "(" ")" "-" delimiters. Below is my code for the field and the widget, I'm getting the following error when trying to iterate the fields in my form during initial rendering (it happens when the for loop gets to my phone number field): Caught an exception while rendering: 'NoneType' object is unsubscriptable class PhoneNumberWidget(forms.MultiWidget): def __init__(self,attrs=None): wigs = (forms.TextInput(attrs={'size':'3','maxlength':'3'}),\ forms.TextInput(attrs={'size':'3','maxlength':'3'}),\ forms.TextInput(attrs={'size':'4','maxlength':'4'})) super(PhoneNumberWidget, self).__init__(wigs, attrs) def decompress(self, value): return value or None def format_output(self, rendered_widgets): return '('+rendered_widgets[0]+')'+rendered_widgets[1]+'-'+rendered_widgets[2] class PhoneNumberField(forms.MultiValueField): widget = PhoneNumberWidget def __init__(self, *args, **kwargs): fields=(forms.CharField(max_length=3), forms.CharField(max_length=3), forms.CharField(max_length=4)) super(PhoneNumberField, self).__init__(fields, *args, **kwargs) def compress(self, data_list): if data_list[0] in fields.EMPTY_VALUES or data_list[1] in fields.EMPTY_VALUES or data_list[2] in fields.EMPTY_VALUES: raise fields.ValidateError(u'Enter valid phone number') return data_list[0]+data_list[1]+data_list[2] class AdvertiserSumbissionForm(ModelForm): business_phone_number = PhoneNumberField(required=True)

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• InvalidCastException when creating an instance using assembly.CreateInstance

  - by Yossi Dahan

  I'm looking for an explanation for the following - I have an assembly I'm loading using Assembly assembly = Assembly.LoadFrom(filename); I then loop on all the types in the assembly, and wish to try and find out if a type implements a particular interface and if so I want an instance of that type, I've tried several things which did not work, but when I fell back to the most basic (and probably inefficient) way, I realised there's something more fundamental I don't understand - foreach (Type t in assembly.GetTypes()) { foreach (Type i in t.GetInterfaces()) { if (i.FullName == pluginInterfaceType.FullName) { object o = assembly.CreateInstance(t.ToString()); IInterface plugin = (IInterface)o; That last line causes an InvalidCastException, despite the fact that the type created definitely implements that interface. Further more - if I use Activator.CreateInstance instead of Assembly.CreateInstance (which I don't want to do), casting to the interface works just fine.

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• HTMLAgilityPack ChildNodes index works, named node does not

  - by XgenX

  I am parsing an XML API response with HTMLAgilityPack. I am able to select the result items from the API call. Then I loop through the items and want to write the ChildNodes to a table. When I select ChildNodes by saying something like: sItemId = dnItem.ChildNodes(0).innertext I get the proper itemId result. But when I try: sItemId = dnItem.ChildNodes("itemId").innertext I get "Referenced object has a value of 'Nothing'." I have tried "itemID[1]", "/itemId[1]" and a veriety of strings. I have tried SelectSingleNode and ChildNodes.Item("itemId").innertext. The only one that has worked is using the index. The problem with using the index is that sometimes child elements are omitted in the results and that throw off the index. Anybody know what I am doing wrong?

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• filling array gradually with data from user

  - by neville

  I'm trying to fill an array with words inputted by user. Each word must be one letter longer than previous and one letter shorter than next one. Their length is equal to table row index, counting from 2. Words will finally create a one sided pyramid, like : A AB ABC ABCD Scanner sc = new Scanner(System.in); System.out.println("Give the height of array: "); String[] words = new String[height]; for(int i=2; i<height+2; i++){ System.out.println("Give word with "+i+" letters."); words[i-2] = sc.next(); while( words[i-2].length()>i-2 || words[i-2].length()<words[i-3].length() ){ words[i-2] = sc.next(); } } Currently the while loop doesn't influence scanner at all :/

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• Static compilation in the .NET world

  - by AngryHacker

  I'll be writing a small desktop app for a client that has WinXP machines and they won't be installing the .NET framework (at least not for me). So my choices are limited to either C++ or VB6, neither of which sound great. I remember reading back in the day that Mono came up with a static compiler, but recently the only thing I could find is Miguel de Icaza's entry on static compilation for a game engine for the purposes of running the app on the iPhone - not what I had in mind. Are there any products out there, free or commercial that will allow me to statically compile my .net 3.5 winform app? Thanks

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• Let system time determine animation speed, not program FPS

  - by Anders

  I'm writing a card game in ActionScript 3. Each card is represented by an instance of a class extending movieclip exported from Flash CS4 that contains the card graphics and a flip animation. When I want to flip a card I call gotoAndPlay on this movieclip. When the frame rate slows down all animations take longer to finish. It seems Flash will by default animate movieclips in a way that makes sure all frames in the clip will be drawn. Therefor, when the program frame rate goes below the frame rate of the clip, the animation will be played at a slower pace. I would like to have an animation always play at the same speed and as a consequence always be shown on the screen for the same amount of time. If the frame rate is too slow to show all frames, frames are dropped. Is is possible to tell Flash to animate in this way? If not, what is the easiest way to program this behavior myself?

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• Alternative Menu Items in NSMenu

  - by Nick Paulson

  Hi, I have an NSMenu that contains NSMenuItems with custom views. I want it so that when the alt button is pressed, the menu items would change part of their look (through their view). I found setAlternative in the NSMenuItem docs, however, in practice I could only get it to work with NSMenuItems without custom views. As soon as I set a custom view, all of the menu items would be displayed. Also, I tried getting keypress events while the menu was open. Due to the other run loop, NSApplication's sendEvent: doesn't receive events until after the menu is closed. Therefore, I can't just intercept the event coming in. Does anyone know how I can get notified, whether through delegation or subclassing, of when the alt key is pressed when a menu is opened?

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• Android: 2D. OpenGl or android.graphics?

  - by DroidIn.net

  I'm working with my friend on our first Android game. Basic idea is that every frame the whole surface is redrawn (1 large bitmap) which then sprinkled all over with large number of particles which produces effect of soapy bubbles where there's a pool of about 20 bitmaps which randomly gets picked to produce illusion that all bubbles (between 200 - 300) are all different. The math engine is in C (JNI) and currently all drawing is done using android.graphics package very similar (since that was the example I was using) to Lunar Lander. It works but animation is somewhat jerky and I can feel by temperature of my phone that it is very busy. Will we benefit from switching to OpenGL? And as a bonus question: what would be a good way to optimize the drawing mechanism (Lunar Lander like) we have now?

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• How to get an array from a database in Rails3 even when there's only one record?

  - by yuval

  In Rails3, I have the following line: @messages = Message.where("recipient_deleted = ?", false).find_by_recipient_id(@user.id) In my view, I loop through @messages and print out each message, as such: <% for message in @messages %> <%= message.sender_id %> <%= message.created_at %> <%= message.body %> <% end %> This works flawlessly when there are several messages. The problem is that when I have one message, I get an error thrown at me: undefined methodeach'` How do I force rails to always return an array of messages even if there's only one message so that each always works? Thanks!

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• Using Regex.Replace() to replace text in a string

  - by aspdotnetuser

  Hi, I want to use Regex.Replace() to loop through a string containing words that are separated by '//' to check if any of the words match a string value which has been passed to the method. Here's my code at the moment: public void CheckText(string text) { //Check text entered by user string wordList = "word1//word2//word3 etc..."; string replaceString = "matched"; if (!string.IsNullOrEmpty(wordList)) { return Regex.Replace(text, wordList); //How do I implement this part? } } Please could someone help me with this? Any help/comments will be appreciated! Thanks,

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• How to style alternating rows in asp.net mvc

  - by YeahStu

  I am using a <% foreach ...% loop to list a collection of items on my website. I want to add a different background color for the style of alternating rows in my list. I have found a way to do this but I am not satisfied with it as it seems like a hack. Here is what I have done to solve it so far: <table> <% int counter = 0; foreach (var item in Model) { counter++; if (counter % 2 == 0) { %> <tr class="colorfull"> <% } else { %> <tr> <% } %> ... Is there a best practice that I am missing that people are using for this scenario in ASP.NET MVC?

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• Sorting items in php

  - by c0mrade

  Hello, I have a problem with sorting items in table in PHP. Here is what I want to achieve : Item Item Item Item Item Item Item Item Item Item Item Item Item Item Item How I mean to achieve this, well since I have a for each loop I can insert counter, and say after 5th item is listed write to another column, the thing is I'm not good with tables, I've tried something like : for(...) $counter++; if(($counter%5) == 0){ echo ""; } Not happening .. I hope you understood what I meant .. tnx

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• Entity Framework, full-text search and temporary tables

  - by markus

  I have a LINQ-2-Entity query builder, nesting different kinds of Where clauses depending on a fairly complex search form. Works great so far. Now I need to use a SQL Server fulltext search index in some of my queries. Is there any chance to add the search term directly to the LINQ query, and have the score available as a selectable property? If not, I could write a stored procedure to load a list of all row IDs matching the full-text search criteria, and then use a LINQ-2-Entity query to load the detail data and evaluate other optional filter criteria in a loop per row. That would be of course a very bad idea performance-wise. Another option would be to use a stored procedure to insert all row IDs matching the full-text search into a temporary table, and then let the LINQ query join the temporary table. Question is: how to join a temporary table in a LINQ query, as it cannot be part of the entity model?

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• Fastest way to calculate an X-bit bitmask?

  - by Virtlink

  I have been trying to solve this problem for a while, but couldn't with just integer arithmetic and bitwise operators. However, I think its possible and it should be fairly easy. What am I missing? The problem: to get an integer value of arbitrary length (this is not relevant to the problem) with it's X least significant bits sets to 1 and the rest to 0. For example, given the number 31, I need to get an integer value which equals 0x7FFFFFFF (31 least significant bits are 1 and the rest zeros). Of course, using a loop OR-ing a shifted 1 to an integer X times will do the job. But that's not the solution I'm looking for. It should be more in the direction of (X << Y - 1), thus using no loops.

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• FLEX, Actionscript: 2 questions about mouseOver event and image scaling

  - by Patrick

  hi, 1) if I create items in a for loop, is correct to add a new eventListener for each item ? Or should I add only 1 eventListener to the parent ? and call the event through ID ? 2) if I want to scale my item, (a LinkButton with icon image), I noticed that the icon is sometimes resized with delay, so I have a bit of flickering when I trigger the event. Should I not use icons, and set the image in another way ? How can I fix this ? thanks

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• Limit a program's execution time in C (Monte Carlo technique)

  - by rrs90

  I am working on a project which has no determined algorithm to solve using C language. I am Using Monte Carlo technique for solving that problem. And the number of random guesses I want to limit to the execution time specified by the user. This means I want to make full use of the execution time limit defined by the user (as a command line argument) to make as many random iterations as possible. Can I check the execution time elapsed so far for a loop condition. Eg: for(trials=0;execution_time P.S. I am using code blocks 10.05 for coding and GNU compiler.

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• DataGridView Winform Auto Insert Ordinal Column (Trick)

  - by pang

  I want to get some trick for this problem. I have my table like this Product (uuid, Name) and one datagridview to display this information ( dataGridView.DataSouce = Products which is assign on runtime) My problem is that I want to have "No" column on dataGridView which will show like below No | Name 1 | ProdctA 2 | ProductB 3 | ProductC What I do right now is create a "No" field on my product Model, and loop through all the row and assign value to it. I think this is not a good solution. Hope anyone can suggest better solution. Thanks,

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• In R, when using named rows, can a sparse matrix column be added to another sparse matrix?

  - by ayman

  I have two sparse matrices, m1 and m2: > m1 <- Matrix(data=0,nrow=2, ncol=1, sparse=TRUE, dimnames=list(c("b","d"),NULL)) > m2 <- Matrix(data=0,nrow=2, ncol=1, sparse=TRUE, dimnames=list(c("a","b"),NULL)) > m1["b",1]<- 4 > m2["a",1]<- 5 > m1 2 x 1 sparse Matrix of class "dgCMatrix" b 4 d . > m2 2 x 1 sparse Matrix of class "dgCMatrix" a 5 b . > and I want to cbind() them to make a sparse matrix like: [,1] [,2] a . 5 b 4 . d . . however cbind() ignores the named rows: > cbind(m1[,1],m2[,1]) [,1] [,2] b 4 5 d 0 0 is there some way to do this without a brute force loop?

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• I'm having an issue with a scala script using 2.7.7 - Main$$anon$1$$anonfun$1$$anonfun$apply$2

  - by Uruhara747

  This is the code I used from a book... import scala.actors.Actor._ val countActor = actor{ loop { react{ case "how many?" = { println("I've got " + mailboxSize.toString + " messages in my mailbox.") } } } } countActor ! 1 countActor ! 2 countActor ! 3 countActor ! "how many?" countActor ! "how many?" countActor ! 4 countActor ! "how many?" The error java.lang.NoClassDefFoundError: Main$$anon$1$$anonfun$1$$anonfun$apply$2

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• Use super with before_validation.

  - by krunal shah

  I have this code in my every model. Class people def before_validation @attributes.each do |key,value| self[key] = nil if value.blank? end end end Now i want to put my loop in separate module. Like Module test def before_validation @attributes.each do |key,value| self[key] = nil if value.blank? end end end And i want to call this before_validation this way Class people include test def before_validation super .....Here is my other logic part..... end end Are there any way to do it like that in rails??

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