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• Scala Tuple Deconstruction

  - by dbyrne

  I am new to Scala, and ran across a small hiccup that has been annoying me. Initializing two vars in parallel works great: var (x,y) = (1,2) However I can't find a way to assign new values in parallel: (x,y) = (x+y,y-x) //invalid syntax I end up writing something like this: val xtmp = x+y; y = x-y; x = xtmp I realize writing functional code is one way of avoiding this, but there are certain situations where vars just make more sense. I have two questions: 1) Is there a better way of doing this? Am I missing something? 2) What is the reason for not allowing true parallel assignment?

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• gridview dropbox

  - by tbischel

  I'm trying to use a GridView to display a list of components in ASP.NET. I'm trying to make it editable at the same time. One of the columns is a string that should be selected out of a list when the user edits the row. So I've tried the following: Convert the BoundField row to an ItemTemplate Add a dropbox to the template window in the gridview bound the selecteditem to the string At this point, I get an error because the list items haven't been set up in the dropbox. So I guess the two things I'm wondering are: How do I assign the items in the dropbox to a dynamically created list of options? How do I make the dropbox only appear when the row is being edited?

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• Pascal - bad number format

  - by Donator

  Program: program s; type info = record name, surname: string; min, sek: integer; end; type arrays = array[1..50] of info; var c, b: text; A: arrays; gr_sk, grup_dal: integer; begin assign(c, 'info.txt'); reset(c); read(c, gr_sk); read(c, grup_dal); id := 1; read(c, A[id].name); read(c, A[id].sek); close(c); end. info.txt file: 3 4 yhgf 4 Please, tell me what is wrong with that. It says that it is bad number format for line 19 I guess.

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• Spring security and Struts 2

  - by Thanksforfish

  I have a struts2 action with an @Secured({"ROLE_ADMIN"}) to secure the execute method. In the execute method i assign a message to a member variable of the action, then return SUCCESS and end up on the jsp page. On the page I retrieve the actions member variable with <sroperty. private String greeting; public String execute() throws Exception { this.greeting="Hello"; return SUCCESS; } // getters and setters for greeting ... <s:property value="greeting" /> The problem is when the secured annotation is present the jsp shows nothing for the member variable but when @Secured is removed the whole thing behaves properly and shows the message that was set into the member variable. It appears that the actual security is working ok but when enabled via the annotation the member variable (or maybe the instance of the action) is not making its way onto the value stack. I cant see any error messages.

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• Load balancing and shedulling algorithms .NET

  - by Lukas Šalkauskas

  Hello there, so here is my problem: I have several different configuarion servers. I have different calculations (jobs), I can predict how long approx. each job will take to be caclulated. Also I have priorities. My question is how to keep all machines loaded 99-100% and shedule the jobs in the best way. Each machine can do several calculations at the time. Jobs are pushed to the machine. Central machine knows current load of each machine. Also I would like to to assign some king of machine learning here, because I will know statistics of each job (started, finished, cpu load etc.). How to distribute jobs(calculations) in the best possible way, also keep in mind priority. Any suggestions ? Ideas ? Algorithms ?

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• AS3 Accessing Variables of Parent Class From Child

  - by TheDarkIn1978

  i'm trying to assign a parent's variable from the parent's child //Parent public class Main extends Sprite { public var selectedSquare:Sprite; public function Main() { //inits and adds new Square child class to display list } ... ------- //Child public function dragSquare(evt:MouseEvent):void { Sprite(parent).selectedSquare = this; //evil doesn't work! parent.addChild(this); this.startDrag(); } i'm receiving this error, but i'm casting parent from displayObjectContainer to a Sprite so i have no idea why it's not working. 1119: Access of possibly undefined property selectedSquare through a reference with static type flash.display:Sprite.

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• problem with dll file linked with masterpage

  - by sumit

  i have recently find the solution that how i can retrieve the fileupload id when page is linked with masterpage in codebehind as ContentPlaceHolder content = Page.Master.FindControl("ContentPlaceHolder1") as ContentPlaceHolder; Fileupload f=content.FindControl("FileUpload1") as FileUpload; in my contentplaceholeder1 i have a dropdownlist with id dropdownlist1 now i m trying to use it in one of the cs file of dll file as if (previousFields.ContainsKey("dropdownlist1")) { prefix = previousFields["dropdownlist1"]; } where dropdownload list is the previos field of fileupload so it checks the previos field and assign the prefix to the corresponding value.nw i want to know how can i access the dropdownlist id within contentplaceholder1 id

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• SSIS: Update a RecordSet passed into a VB.NET ScriptTask

  - by Zambouras

  What I am trying to accomplish is using this script task to continually insert into a generated RecordSet I know how to access it in the script however I do not know how to update it after my changes to the DataTable have been made. Code is Below: Dim EmailsToSend As New OleDb.OleDbDataAdapter Dim EmailsToSendDt As New DataTable("EmailsToSend") Dim CurrentEmailsToSend As New DataTable Dim EmailsToSendRow As DataRow EmailsToSendDt.Columns.Add("SiteMgrUserId", System.Type.GetType("System.Integer")) EmailsToSendDt.Columns.Add("EmailAddress", System.Type.GetType("System.String")) EmailsToSendDt.Columns.Add("EmailMessage", System.Type.GetType("System.String")) EmailsToSendRow = EmailsToSendDt.NewRow() EmailsToSendRow.Item("SiteMgrUserId") = siteMgrUserId EmailsToSendRow.Item("EmailAddress") = siteMgrEmail EmailsToSendRow.Item("EmailMessage") = EmailMessage.ToString EmailsToSend.Fill(CurrentEmailsToSend, Dts.Variables("EmailsToSend").Value) EmailsToSendDt.Merge(CurrentEmailsToSend, True) Basically my goal is to create a single row in a new data table. Get the current record set, merge the results so I have my result DataTable. Now I just need to update the ReadWriteVariable for my script. Do not know if I have to do anything special or if I can just assign it directly to the DataTable I.E. Dts.Variables("EmailsToSend").Value = EmailsToSendDt Thanks for the help in advanced.

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• Operator() as a subscript (C++)

  - by Ivan Gromov

  I use operator() as a subscript operator this way: double CVector::operator() (int i) const { if (i >= 0 && i < this->size) return this->data[i]; else return 0; } double& CVector::operator() (int i) { return (this->data[i]); } It works when I get values, but I get an error when I try to write assign a value using a(i) = 1; UPD: Error text: Unhandled exception at 0x651cf54a (msvcr100d.dll) in CG.exe: 0xC0000005: Access violation reading location 0xccccccc0.

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• How come (a_method || :other) returns :other only when assigning to a var called a_method?

  - by Paul Annesley

  Given the following method: def some_method :value end The following statements work as I would expect: some_method || :other # => :value x = some_method || :other # => :value But the behaviour of the following statement perplexes me: some_method = some_method || :other # => :other It creates a local variable called some_method as expected, and subsequent calls to some_method return the value of that local variable. But why does it assign :other rather than :value? I understand that it's probably not a smart thing to do, and can see how it might be ambiguous, but I thought the right-hand-side of the assignment should be evaluated prior to the assignment being considered... I've tested this in Ruby 1.8.7 and Ruby 1.9.2 with identical results. Cheers! Paul

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• jQuery all inputs with unique id

  - by d3020

  I have some textboxes on a webform that have ids like this: txtFinalDeadline_1 txtFinalDeadline_2 txtFinalDeadline_3 txtFinalDeadline_4 In my jQuery how do I find all of those in order to assign a value to them. Before I had the underscore and they were all named txtFinalDeadline I could do this and it worked. $(this).find("#txtFinalDeadline").val(formatDate); However, that was when they were all named the same thing. Now I have the _x after the name and I'm not sure how to go about assigning that same value as before to them. Thanks.

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• ASP.NET single quotes are converted to &#39;

  - by Monty

  Note: Most probably this will be a double question, but since I haven't found a clear answer, I'm asking it anyway. In ASP.NET I'd like to add some JavaScript to the onclick event of a CheckBox. I've simplified the case to this: <asp:CheckBox ID="TestCheckBox" runat="server" onclick="alert('test');" Text="Test" /> The resulting HTML is as follows: <input id="MainContainer_TestCheckBox" type="checkbox" name="ctl00$MainContainer$TestCheckBox" onclick="alert(&#39;test&#39;);" /><label for="MainContainer_TestCheckBox">Test</label> What particularly bothers me is that a single quote 'automatically' gets converted into '&#39;'. If I omit the onclick in the markup and assign it in Page_Load, the exact same results show in the HTML. protected void Page_Load(object sender, EventArgs e) { this.TestCheckBox.Attributes["onclick"] = "alert('test');"; } Anyone got a clue about what's happening? Or how to fix/ avoid it?

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• Python metaprogramming help

  - by Timmy

  im looking into mongoengine, and i wanted to make a class an "EmbeddedDocument" dynamically, so i do this def custom(cls): cls = type( cls.__name__, (EmbeddedDocument,), cls.__dict__.copy() ) cls.a = FloatField(required=True) cls.b = FloatField(required=True) return cls A = custom( A ) and tried it on some classes, but its not doing some of the base class's init or sumthing in BaseDocument def __init__(self, **values): self._data = {} # Assign initial values to instance for attr_name, attr_value in self._fields.items(): if attr_name in values: setattr(self, attr_name, values.pop(attr_name)) else: # Use default value if present value = getattr(self, attr_name, None) setattr(self, attr_name, value) but this never gets used, thus never setting ._data, and giving me errors. how do i do this?

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• Error Instantiating an Inner Class in Parent's Constructor...

  - by stormin986

  In my application's main class (subclass of Application), I have a public inner class that simply contains 3 public string objects. In the parent class I declare an object of that inner class. public class MainApplication extends Application { public class Data { public String x; public String y; public String z; } private Data data; MainApplication() { data = new Data() data.x = "String"; } } After I instantiate the object in the constructor, I get a runtime error when I try to assign any of the inner class object's variables. Any idea what's up here??

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• Google Account ID?

  - by lipfip

  Hi, I am building an app on top of Google Reader. Since users have to enter their Google Account data, I'd like to use this data to assign personal settings to each user. However, if I do so and a user would change his email adress or password(for the whole Google Account), I wouldn't be able to identify him anymore. Thus, I need to know if there's a Google Account ID or something that I can use to identify users regardless of an email adress or password. Thanks for your help!

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• Is there any short way to load data to the properties of a class, for each column name matching the properties of the class?

  - by Ugur Gümüshan

  I want to load data to an instance of an object using its constructor and I write $this->property=$row["colname"] each time for each property. the mysql_fetch_object function fetches the data as an object but I am not sure if the instance of an object can be assigned to some object from inside. othwerwise I would use __construct($object) { $this=$object; } //doesn't give any syntax error Maybe I should look into iteration of properties and use foreach($object as $key => $value) $value=$object[$key]; or can I assign like $this=$object; within the constructor?

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• Android date/time displaying 0 instead of 12

  - by bEtTy Barnes

  I wonder what's wrong with my code below: // Assign hour set in the picker c.set( Calendar.HOUR, selectedHour ); c.set( Calendar.MINUTE, selectedMinute ); // For alternative times c.add( Calendar.HOUR, SUB_SIX_HOUR ); c.add( Calendar.MINUTE, SUB_FLAT_MINUTE ); hour = c.get( Calendar.HOUR ); minute = c.get( Calendar.MINUTE ); hour = c.get( Calendar.HOUR_OF_DAY ); StringBuilder sb4 = new StringBuilder(); if(hour>=12){ sb4.append(hour-12).append( ":" ).append(minute).append(" PM"); }else if(hour == 0){ sb4.append( "12" ).append( ":" ).append(minute).append( "AM" ); }else{ sb4.append(hour).append( ":" ).append(minute).append(" AM"); } alternative.setText( "Alternative times: " + sb3 + " (9 hours)" + sb4 + " (6 hours)" ); Please help me figure out how to display 12 instead of 0 when the calculated time is 12:00 midnight. Thanks!

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• php open_socket

  - by sea_1987

  Hello, I am trying to open a socket to use with secure tradings xpay api, however when I check to see if the socket is open I get error returned, Can't assign requested address I need to open up 127.0.0.1:5000 is there something wring with my code that means I cannot do this? if (isset($xpay_port) and ($socket=socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) and (socket_connect($socket, $address, $port))) { $text="Connection successful on IP $address, port $port"; socket_close($socket); } else $text="Unable to connect<pre>".socket_strerror(socket_last_error())."</pre>"; echo "<html><head></head><body>". $text. "</body></html>";

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• Need help with events in COM in pure C++!

  - by Artem

  Hello, guys! Very important question: Please, look at my project (300Kb). I can`t use MFC/ATL, pure C++ only. I have COM library (niapi.dll), but no sources/headers available, dll only. There is class for connecting to server (NiApi::SrvrSession), class has login event handler (NiApi::SrvrSession::OnLogin). I used #import "NiApi.dll" to generate wrappers/information, then ISrvrSessionPtr session(L"NiApi.SrvrSession"); to create object, then trying session->put_OnLogin(); to assign events, but there is no one put_On or such member. niapi.tlh have _ISrvrSessionEvents struct inside, but it have no relations with SrvrSession. I need to use events from NiApi::SrvrSession for handling connection status. Please help or my boss kill me! (sorry for broken english, I read better than speak;)

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• Setting ID to a control inside repeater itemtemplate

  - by toraan

  Inside repeater's itemtemplate I have a Panel server control. I need to assign special Id for it, because I need to work with some javascript functions that use this Id. In repeater ItemDataBound event I have this: pnlButtonsPanel.ID = pnlButtonsPanel.ID + DataBinder.Eval(e.Item.DataItem, "ID"); But this solution is not good because after a postback the page is re -rendered and I lose the new ID. (And I don't want to rebind repeater after every postback) I tried to set the ID on aspx page like that: <asp:Panel id='<%# Eval("ID") %>' and some other variations but always get compile errors.

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• Best approach to a customer portal in ASP.NET MVC

  - by DoodleWalker

  Hi All, The problem: client needs a website to serve 10+ customers, each customer has 5-10 people they wish to grant access using login & user name, once "logged in" the user can download files specific to their company. The files will be uploaded to a directory under the customer name, and displayed as a list. Currently using membership for all of the users, it's just the "by customer" segmentation I'm wondering about. the question being under ASP.NET MVC what is the cleanest or simplest approach to solving the customer segmentation, trying to avoid customer membership provider so was going to use the roles to assign customer group. Thoughts appreciated.

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• How do you manage your time as a team leader?

  - by Bryan Slatner

  Where I work, my role has been evolving from a pure development role to team leadership. I find that this suits me, and I'm generally enjoying it. One aspect of the job that continually vexes me, though, is time management. My day used to be pure coding. Now, I still have a largely full plate of coding duties, but I'm expected to mentor other developers, work on requirements, make design decisions for other developers, evaluate bug reports from users, assign them to developers, and so on. I find that my day has become on interruption after another and the prolonged periods of sustained concentration needed to get any actual quality coding done are becoming rarer and rarer. Today, I finally grabbed my laptop and escaped to a coffee shop so I could get some actual work done. How do the team leads here manage their day -- or manage their workplace -- so they don't let their administrative tasks overwhelm them?

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• C# - Inserting multiple rows using a stored procedure

  - by user177883

  I have a list of objects, this list contains about 4 million objects. there is a stored proc that takes objects attributes as params , make some lookups and insert them into tables. what s the most efficient way to insert this 4 million objects to db? How i do : -- connect to sql - SQLConnection ... foreach(var item in listofobjects) { SQLCommand sc = ... // assign params sc.ExecuteQuery(); } THis has been really slow. is there a better way to do this?

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• value was "" blank when refreshing the page manually

  - by crisgomez

  Hi, I have a problem regarding the maintaining of value when page was refresh.I assign a value into a hidden control using javascript below: function displaytab(tabID) { var tabId = document.getElementById("ctl00_MainContent_tabId"); switch (tabID) { case 1: tabId.value=1; break; case 2: tabId.value=2; break; case 3: tabId.value=3; break; default: tabId.value=0; break; } but when i refresh the page the value was ("") blank. Is there any way how to resolved this issue? or what is the best way to do this?

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• How to create Empty Label without any entries in it using Google Mail API?

  - by Pari

  Hi, I want to create an empty label in Google apps using Google Mail API. Using Below code: MailItemService mailItemService = new MailItemService(domain, "Sample Migration Application"); mailItemService.setUserCredentials(userEmail, password); MailItemEntry[] entries = new MailItemEntry[1]; entries[0] = new MailItemEntry(); entries[0].Labels.Add(new LabelElement("Empty Label")); entries[0].BatchData = new GDataBatchEntryData(); entries[0].BatchData.Id = "0"; MailItemFeed feed = mailItemService.Batch(domain, username, entries); Above code is not giving any error but not creating label also. If i assign some more values to entries it work nicely but it result in cretion of mail inside Label (But i want empty label) Can anyone help me out here? Thanx

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