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  • Calculate date from numeric value

    - by elias
    The number 71867806 represents the present day, with the smallest unit of days. How can I calculate the currente date from it? (or) convert it into an Unix timestamp? Solution shouldn't use language depending features. Thanks!

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  • Best approach for a scalable PHP (AJAX based) chat system

    - by Simon
    Hi, I'm building a chat system for a company and I'm wondering as to what the best way to build the system would be? The current setup we have is a Nginx HTTP Server with PHP and Memcacheq (as a message queue that appends the chat messages to the user's own queue). We then poll the Nginx server (through a Comet style request) and query the message queue for updates. Is it a good idea to use a message queue such as Memcacheq to handle a chat system that has both user-to-user and site-wide chat or is it best to just stick to MySQL? Thanks!

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  • Why do some languages not use semicolons and braces?

    - by Incognito
    It is interesting that some languages do not use semicolons and braces, even though their predecessors had them. Personally, it makes me nervous to write code in Python because of this. Semicolons are also missing from Google's GO language, although the lexer uses a rule to insert semicolons automatically as it scans. Why do some languages not use semicolons and braces?

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  • ASP.NET: Unable to validate data.

    - by SoloBold
    What is the cause of this exception in ASP.NET? Obviously it is a viewstate exception, but I can't reproduce the error on the page that is throwing the exception (a simple two TextBox form with a button and navigation links). FWIW, I'm not running a web farm. Exception Error Message: Unable to validate data. Error Source: System.Web Error Target Site: Byte[] GetDecodedData(Byte[], Byte[], Int32, Int32, Int32 ByRef) Post Data VIEWSTATE: /wEPDwULLTE4NTUyODcyMTFkZF96FHxDUAHIY3NOAMRJYZ+CKsnB EVENTVALIDATION: /wEWBAK+8ZzHAgKOhZRcApDF79ECAoLch4YMeQ2ayv/Gi76znHooiRyBFrWtwyg= Exception Stack Trace at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) at System.Web.UI.HiddenFieldPageStatePersister.Load() at System.Web.UI.Page.LoadPageStateFromPersistenceMedium() at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.default_aspx.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) ~ William Riley-Land

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  • in google analytics, what is 'ga:accountName' for ?

    - by Chez
    In google analytics, what is 'ga:accountName' for ? it might seem like a straightforward question but I can't find anywhere some documentation which tells me what ga:accountName is supposed to return. if I run the google's code from the java example: private static void getAccountFeed(AnalyticsService analyticsService) throws IOException, MalformedURLException, ServiceException { // Construct query from a string. URL queryUrl = new URL( "https://www.google.com/analytics/feeds/accounts/default?max-results=10"); // Make request to the API. AccountFeed accountFeed = analyticsService.getFeed(queryUrl, AccountFeed.class); // Output the data to the screen. System.out.println("-------- Account Feed Results --------"); for (AccountEntry entry : accountFeed.getEntries()) { System.out.println( "\nAccount Name = " + entry.getProperty("ga:accountName") + "\nProfile Name = " + entry.getTitle().getPlainText() + "\nProfile Id = " + entry.getProperty("ga:profileId") + "\nTable Id = " + entry.getTableId().getValue()); } } it does return my website. can anybody help ? thanks

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  • Statements and state

    - by FredOverflow
    Is there any deeper meaning in the fact that the word "statement" starts with the word "state", or is that just a curious coincidence? Note that english is not my native language, so the answer might be obvious to you, but not me ;)

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  • Resources needed: Sort 2D array "graphically"

    - by aw
    I have a 2D array 1 2 3 4 5 6 7 8 9 and want to sort it like this Snake 1 2 3 8 9 4 7 6 5 Snake (different) 1 2 3 6 5 4 7 8 9 Rotated 1 4 7 2 5 8 3 6 9 Wipe (diagonal) 1 3 6 2 5 8 4 7 9 Well, you got it, all kinds of sorting. Searching the interweb for hours now. Any resources (specific language or pseudo code) on that greatly appreciated...

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  • Monitor and Terminate Python script based on system resource use

    - by Vincent
    What is the "right" or "best" way to monitor the system resources a python script is using and terminate it if the resource use exceeds some predetermined values. In my case memory usage is of concern. I am not asking how to measure the system resource use although I am open to suggestions. As a simple example, let's assume I have a function that finds prime numbers less than some large number and adds them to a list based on some condition. I don't know ahead of time how many prime numbers will satisfy the condition so I what to be sure to terminate the function if I use up to much system memory (8gb lets say). I know that there are ways to monitor the size of python objects. What I don't know is the proper way to monitor the size of the list and exit is to just include a size test in the prime function loop and exit if it exceeds 8gb or if there is an "external" way to monitor and exit.

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  • Handle leaks with .NET System.Threading.Thread class

    - by Mahno
    I've a problem that number of Handles in my app is continuously growing. I did the debugging and recognize that this is caused by System.Threading.Thread class which is used for some routine. To simplify the debugging I’ve created a sample .NET application: ... private void button1_Click(object sender, EventArgs e) { Thread t = new Thread(DoWork); t.Start(); } public void DoWork(object parameter) { // Do something... } ... Each time I’m clicking the button, a thread is created using System.Threading.Thread class. The problem is that looks like the thread do not frees Handles because each click cause number of Handles growing by ~5. The question is: how can I manually free all Handles created by System.Threading.Thread class? Thanks in advance.

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  • design question for transportation agency/workflow system

    - by George2
    Hello everyone, I am designing a transportation agency/workflow system, and it including 3 types of people, customer who requests to transport some stuff, drivers who deliver the stuff, and truck manager who manages transport source/destination truck coordination and communicates/organizes drivers. The system is expected to be a web site, and 3 kinds of people could use the web site to submit request, accept request, monitor status of specific stuff transportation, etc. The web site is more like an open agency or a workflow system. I am wondering whether there are any existing technologies, tools or projects (better to be open source, but not a must) which I could build my application faster based on? I prefer to use .Net technologies, but not a must. thanks in advance, George

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  • Concatenate String to Evernote Markup Language (ENML) in python

    - by Adam the Mediocre
    I am looking to add a string containing the user's text input to the note.content of my note. After reading, I have found how to add resources, but I don't want the resource to be an attachment, I want it to be the actual text. Here is some of the code: title= self.textEditTitle.text() body= self.textEditBody.text() auth_token = "secret stuff!" client = EvernoteClient(token=auth_token, sandbox=True) note_store = client.get_note_store() nBody = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" nBody += "<!DOCTYPE en-note SYSTEM \"http://xml.evernote.com/pub/enml2.dtd\">" nBody += "<en-note>%s</en-note>" % body note = Types.Note() note.title = title note.content= nBody Any advice would be great, as I'm just starting out with this api and it looks like it's full of potential once I figure it out! Here is what I have been mostly reading from: http://dev.evernote.com/documentation/cloud/chapters/ENML.php

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  • question about working with System.Drawing.Graphics

    - by backdoor
    hi all. i have a System.Drawing.Point[] filled with some System.Drawing.Point's. so when i want to draw this points as a polygon in a System.Windows.Form instance , the final drawn polygon is not all in the screen or sometimes is very small (in screen shown as 2-3 pixel). i wonder if there is some Library that using that i can just send Point[] to that and thatself scales and ... points and draws polygon manner that all points shown in screen and they are scaled to fit the screen (i mean small objects that shown as 2-3 pixel scale up to fit entire screen); thaks all and sorry for my bad english...

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  • Create, sort, and print a list of 100 random ints in the fewest chars of code

    - by TheSoftwareJedi
    What is the least amount of code you can write to create, sort (ascending), and print a list of 100 random positive integers? By least amount of code I mean characters contained in the entire source file, so get to minifying. I'm interested in seeing the answers using any and all programming languages. Let's try to keep one answer per language, edit the previous to correct or simplify. If you can't edit, comment?

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  • Using the system localizations on iPhone

    - by nevan
    I want to make a back button for a navigation controller with the title "Back" instead of the title of the previous controller. I'm using this code: UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Back", @"Back") style:UIBarButtonItemStyleBordered target:nil action:nil]; self.navigationItem.backBarButtonItem = backButton; I'd like to be able to skip localizing the "Back" string in my app (since I can only localize it in a limited number of languages). If I give my navigation controller no title, the back button will be automatically localized into whatever the language the user has chosen, so the system has translations of "Back" in many languages. Is there a way to access the localizations that are already present in the system and use them myself? These are things like "Back", "Cancel", "Done" and so on, which show up when creating one of the standard system buttons.

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  • System.Threading.Timer example to run and display seconds until you click a button

    - by Roy
    Hi, I am having some issues creating an asp.net page using C# When you first click a button it starts the display of seconds via a label control. When you click the button again the seconds stop. Currently my code behind looks like this: System.Threading.Timer Timer; bool endProcess = false; int i = 0; protected void Page_Load(object sender, EventArgs e) { Timer = new System.Threading.Timer(TimerCallback, null, 10, 10); } private void TimerCallback(object state) { Label1.Text = i.ToString(); i++; if (endProcess == true) { Timer.Dispose(); return; } } public void Button1_Click(object sender, System.EventArgs e) { endProcess = true; }

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  • Is there server-side code which is not cross browser compatible?

    - by Ygam
    Was there a case in any server-side language where a code did not work in a browser while it did work in the rest? I am asking this because I can't imagine such a scenario because server-side code runs in the server, not in the browser but I have seen discussions where, as said, there were "server-side browser compatibility issues". I can't seem to recall where I have read it. Thanks in advance :)

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  • a direct, simple api to run as system?

    - by fejesjoco
    Suppose a program is running with elevated privileges already, and it needs to see the contents of the System Volume Information folder, and by default, only NT Authority\System can do that. A workaround would be to change ACL's on the folder, but I don't want to mess with that. I already found two ways to do it: the task scheduler and psexec. They are too indirect, I don't even need to describe the first one, and the second one works by installing a windows service, running it, telling it to run whatever I wanted to run, then uninstalling the service. Now the question is: is there a direct, simple WinAPI function to run something as system? I don't think that such an API would circumvent the security restrictions, as an administrator I have the right to schedule a task or install a service, so there must be a shortcut.

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  • what is your java 1.6 favorite feature

    - by ekeren
    what is your java 1.6 favorite feature? Java 6 has some nifty feature: SeriveLocator Support to Scripting language Acess to Compiler APT enhancement (Annotation) And more... What is the one you like the most, and found it very useful?

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  • Session is null when inherit from System.Web.UI.Page

    - by Andreas K.
    I want to extend the System.Web.UI.Page-class with some extra stuff. In the ctor I need the value of a session-variable. The problem is that the Session-object is null... public class ExtendedPage : System.Web.UI.Page { protected foo; public ExtendedPage() { this.foo = (int)HttpContext.Current.Session["foo"]; // NullReferenceException } } If I move the part with the session-object into the Load-Event everything works fine... public class ExtendedPage : System.Web.UI.Page { protected foo; public ExtendedPage() { this.Load += new EventHandler(ExtendedPage_Load); } void ExtendedPage_Load(object sender, EventArgs e) { this.foo = (int)HttpContext.Current.Session["foo"]; } } Why is the Session-object null in the first case??

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  • a completely decoupled OO system ?

    - by shrini1000
    To make an OO system as decoupled as possible, I'm thinking of the following approach: 1) we run an RMI/directory like service where objects can register and discover each other. They talk to this service through an interface 2) we run a messaging service to which objects can publish messages, and register subscription callbacks. Again, this happens through interfaces 3) when object A wants to invoke a method on object B, it discovers the target object's unique identity through #1 above, and publishes a message on the message service for object B 4) message services invokes B's callback to give it the message 5) B processes the request and sends the response for A on message service 6) A's callback is called and it gets the response. I feel this system is as decoupled as practically possible, but it has the following problems: 1) communication is typically asynchronous 2) hence it's non real time 3) the system as a whole is less efficient. Are there any other practical problems where this design obviously won't be applicable ? What are your thoughts on this design in general ?

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