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• Joda-Time: Period to string

  - by tt

  I'm using the Joda-Time library with Java. I'm having some difficulty trying to turn a Period object to a string in the format of "x days, x hours, x minutes". These Period objects are first created by adding an amount of seconds to them (they are serialized to XML as seconds and then recreated from them). If I simply use the getHours() etc. methods in them, all I get is zero and the total amount of seconds with getSeconds. How can I make Joda calculate the seconds into the respective fields, like days, hours, etc...?

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• In JavaScript, How to convert string into Date ? Where string may have different culture format.

  - by user328973

  Hi I am getting DateString in JavaScript from the TextBox like, var dateString = document.getElementById('<%= txtEffDate.ClientID %>').value; dateString value may be in following format. en-US - "4/29/2010" fr-FR - "29/04/2010" de-DE - "29.04.2010" it-IT - "29/04/2010" es-ES - "29/04/2010" zh-CN - "2010/4/29" ja-JP - "2010/04/29" sv-SE - "2010-04-29" And converting this to Date Object as follows, var d1 = new Date(dateString); though its giving me the wrong result like for fr-FR "29/04/2010" == "Fri May 4 00:00:00 UTC+0530 2012" Which is completely irrelevant, How should I get the correct Date ? I have also set < globalization culture="auto" / in web.config & < asp:ScriptManager ID="scr1" runat="server" EnableScriptGlobalization="true"/

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• Script stops working on HSQLDB 1.9.0-rc6

  - by jacklty

  DROP VIEW V1 IF EXISTS; DROP TABLE T1 IF EXISTS; CREATE TABLE T1 (id INT, name VARCHAR(32), age int); CREATE VIEW V1 AS (SELECT * FROM T1 WHERE age < 21); I have no problem to execute the SQL statement above in one JDBC statement or on the SWING Manager from HSQLDB. Now it stops working on 1.9.0-rc6. This is error message I got - "user lacks privilege or object not found: T1 / Error Code: -5501 / State: 42501" Does anyone know what have changed in 1.9.0-XX which made it not working? Thanks

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• How can I use Perl and RRD to plot ping times?

  - by ChrisMuench

  I'm trying to do my first rrd graph through Perl. I have tried RRD::Simple and rrds and just can't get either one to work. Here's what I have so far: use strict; use RRD::Simple (); # Create an interface object my $rrd = RRD::Simple-new( file = "server.rrd" ); # Put some arbitary data values in the RRD file for the same # 3 data sources called bytesIn, bytesOut and faultsPerSec. $rrd-create( EqSearch = "DERIVE", MfSearch = "DERIVE", EQCostBasis = "DERIVE", MFCostBasis = "DERIVE" ); $rrd-update( EqSearch = 2, MfSearch = 3, EQCostBasis = 10, MFCostBasis = 15 ); # Generate graphs: # /var/tmp/myfile-daily.png, /var/tmp/myfile-weekly.png # /var/tmp/myfile-monthly.png, /var/tmp/myfile-annual.png my %rtn = $rrd-graph( destination = "/Users/cmuench/Documents/Code/perl", title = "Server A", vertical_label = "", interlaced = "", periods = [qw(hour)] );

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• Server.Transfer("error_404.aspx") in Application_Error returns a blank page

  - by qntmfred

  I look for HttpExceptions in the Application_Error sub of my global.asx Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs) Dim ex As Exception = HttpContext.Current.Server.GetLastError() If ex IsNot Nothing Then If TypeOf (ex) Is HttpUnhandledException Then If ex.InnerException Is Nothing Then Server.Transfer("error.aspx", False) End If ex = ex.InnerException End If If TypeOf (ex) Is HttpException Then Dim httpCode As Integer = CType(ex, HttpException).GetHttpCode() If httpCode = 404 Then Server.ClearError() Server.Transfer("error_404.aspx", False) End If End If End If End Sub I can step through this code and confirm it does hit the Server.Transfer("error_404.aspx"), as well as the Page_Load of error_404.aspx, but all it shows is a blank page.

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• Cost of using repeated parameters

  - by Palimondo

  I consider refactoring few method signatures that currently take parameter of type List or Set of concrete classes --List[Foo]-- to use repeated parameters instead: Foo*. This would allow me to use the same method name and overload it based on the parameter type. This was not possible using List or Set, because List[Foo] and List[Bar] have same type after erasure: List[Object]. In my case the refactored methods work fine with scala.Seq[Foo] that results from the repeated parameter. I would have to change all the invocations and add a sequence argument type annotation to all collection parameters: baz.doStuffWith(foos:_*). Given that switching from collection parameter to repeated parameter is semantically equivalent, does this change have some performance impact that I should be aware of? Is the answer same for scala 2.7._ and 2.8?

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• Javascript Getting a string into kb format

  - by Teske

  I am new to javascript and I just wanted to convert a string into a format that a person like me can read. Here is an example of what I am trying to do... string2size(string){ //some awesome coding I have no clue how to make return awesomeAnswer } now the return should give me something like 56 bytes or 12kb or 1mb depending how much the string is. so if the string is... string = "there was an old woman who lived in a shoe"; then string2size(string) should return something like 3kb. Now I know there has been a utf8 talk and I wouldn't object to and addition of that to the function. I have tried google and Yahoo searches but they talk of using php but I really need it for javascript. I do thank anyone for their time. -Teske

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• How do i handle jcupload and no flash?

  - by acidzombie24

  I am using http://www.jcupload.com/ (basic) to upload files. I am considering having a friend write a more custom version or to do magic with ajax; so the solution should be able to work without that. With jcupload i include css, a script and write <div id="jcupload_content"></div> in my html and i am done. Problem is, with no flash i get an object box. Instead i would like is an iframe or a html form to upload the file. How do i do this? Should i detect flash from javascript and overload the div myself if no flash is available? How do i detect if flash is available? with jquery i know i can write something like $('#jcupload_content').innerHtml = blah; How do i handle the flash part?

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• SQL ConnectionString in global.asax overridden by web.config

  - by rlb.usa

  This is going to sound very odd, but I have a web.config like this: <connectionStrings> <remove name="LocalSqlServer"/> <add name="LocalSqlServer" connectionString="Data Source=BACKUPDB;..." providerName="System.Data.SqlClient"/> </connectionStrings> And a global.asax like this: void Session_Start(object sender, EventArgs e) { // Code that runs when a new session is started if (Application["con"] == null || Application["con"] == "") { Application["con"] = "Data Source=PRODUCTIONDB;..."; } } And EVERYWHERE in my code, I reference my ConnectionStrings like this: SqlConnection con = new SqlConnection(Convert.ToString(HttpContext.Current.Application["con"])); However, I see that everything I do inside this application goes to BACKUP db instead of PRODUCTIONDB. What is going on, how could this happen, and why? It doesn't make any sense to me, and it got me into a lot of trouble. We use LocalSqlServer string for FormsAuthentication.

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• c# Active Directory via WMI

  - by Juri Bogdanov

  Hi! Does anyone has some example about accessing Active Directory, LDAP querying using WMI (System.Management namespace) and not System.DirectoryServices namespace. Here on MSDN page it is described a little using CIM classes http://msdn.microsoft.com/en-us/library/aa392320(v=VS.85).aspx But I cant find some C# example realizing it. For example, to access some Win32 class you have to initialize Scope object to use CIMV2 namespace private ConnectionOptions connection; private ManagementScope scope; ... connection = new ConnectionOptions(); ... scope = new ManagementScope("\\\\" + computer + "\\root\\CIMV2", connection); try { scope.Connect(); } And use ObjectQuery class for querying WMI data ObjectQuery objectQuery = new ObjectQuery("SELECT Name FROM Win32_Processor"); ManagementObjectSearcher searcher = ManagementObjectSearcher(scope, objectQuery); foreach (ManagementObject queryObj in searcher.Get()) { return queryObj["Name"].ToString(); } How is it possible to access AD using the same scope? Thanks :)

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• take out objects from randomizer obj c

  - by David Pollak

  hello everyone, I'm a new "developer" trying to build some iPhone app I'm making an app which gets text from a list of objects in a NSArray and then randomizes them and display one in a TextView, here's the code: - (IBAction)azione{ NSArray *myArray= [NSArray arrayWithObjects: @"Pasta",@"Pizza",@"Wait",@"Go", nil]; int length = [myArray count]; int chosen = arc4random() % length; testo.text = [myArray objectAtIndex: chosen]; } what I want to do now, is when I open the app and get a random object, to take it out from the list, so that it won't be picked again ex. I open the appI get "Pizza"Do the action againI don't get "Pizza" anymore, only "Pasta" "Wait" and "Go" What should I do ? Which code should I use ? Thanks for answers

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• Convet long/lat to pixel x/y on a given picure.

  - by kalininew

  I have a city "map" (for example - Moscow). She in accuracy repeats the contours the given city in google maps (that is it is copied from google maps and it is a little processed, but the sense remained the same). Also I have object co-ordinates in a city (in co-ordinates of google). Problem: how to translate google co-ordinates to the co-ordinates of my picture (that is in pixels on OX and OY on a picture). That is I receive google-co-ordinates and it is necessary for me to draw this point on my picture. I know that on small scales (for example on city scales) it to make simply enough (it is necessary to learn what google-co-ordinates has one of picture corners, then to learn "price" of one pixel in google-co-ordinates on a picture on axes OX and OY separately). But on the big scales (country scale) "price" of one pixel will be not a constant, and will vary strongly enough and the method described above cannot be applied. How to solve a problem on country scales?

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• In Android: How to Call Function of Activity from a Service?

  - by nex

  Hi folks, I have an Activity (A) and a Service (S) which gets started by A like this: Intent i = new Intent(); i.putExtra("updateInterval", 10); i.setClassName("com.blah", "com.blah.S"); startService(i); A have a function like this one in A: public void someInfoArrived(Info i){...} Now I want to call A.someInfoArrived(i) from within S. Intent.putExtra has no version where I could pass an Object reference etc ... Please help! PS: The other way around (A polling S for new info) is NOT what I need. I found enough info about how to do that.

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• Join collection of objects into comma-separated string

  - by Helen Toomik

  In many places in our code we have collections of objects, from which we need to create a comma-separated list. The type of collection varies: it may be a DataTable from which we need a certain column, or a List<Customer>, etc. Now we loop through the collection and use string concatenation, for example: string text = ""; string separator = ""; foreach (DataRow row in table.Rows) { text += separator + row["title"]; separator = ", "; } Is there a better pattern for this? Ideally I would like an approach we could reuse by just sending in a function to get the right field/property/column from each object.

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• Opening Microsoft Word files in c# .net

  - by Dave

  Hi, I'm trying to use the simple code here: http://www.c-sharpcorner.com/UploadFile/Globalking/fileAccessingusingcsharp02242006050207AM/fileAccessingusingcsharp.aspx But I get the following error message when trying to declare a "Word" object. Error 1 The type or namespace name 'Word' could not be found (are you missing a using directive or an assembly reference?) C:\Users..\Documents\Visual Studio 2010\WebSites\Copying1_1\Default.aspx.cs 89 13 C:...\Copying1_1\ Any suggestions? N.b. I went to "add reference" and added "Microsoft Word 12 library", but it doesn't appear in the solution explorer. I also added:"using Microsoft.Office;"

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• Help needed with InvokeRequired for Web.UI

  - by Ali

  I have a multi-threaded application in C# which tries to write to a TextBox in a Windows.Forms created by another thread. As threads cannot modify what has not been created by them, I was using InvokeRequired as shown on the code below, to solve this problem. public delegate void MessageDelegate(Communication message); void agent_MessageReceived(Communication message) { if (InvokeRequired) { BeginInvoke(new MessageDelegate(agent_MessageReceived), new object[] { message }); } else { TextBox1.Text += message.Body; } } Now I need to do the same for a TextBox in an ASP.NET app, but apparently neither InvokeRequired nor BeginInvoke exist for TextBox in a Web.UI. What can I do?

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• How to inject JPA EntityManager using spring

  - by marcos

  Hello all! I have a few questions about jpa + spring integration running on tomcat, i've been looking fo some time and couldn't find any concrete answer, so here it goes: Is it possible to have spring to inject the JPA entityManager object into my DAO class without extending JpaDaoSupport? if yes, does spring manage the transaction in this case? I'm trying to keep spring configuration as simple as possible: <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="em"/> </bean> <bean id="em" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean"> <property name="persistenceUnitName" value="myPU"/> </bean> EDIT: that was very helpfull, thank you all!

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• JavaScript replace with callback - performance question

  - by Tomalak

  In JavaScript, you can define a callback handler in regex string replace operations: str.replace(/str[123]|etc/, replaceCallback); Imagine you have a lookup object of strings and replacements. var lookup = {"str1": "repl1", "str2": "repl2", "str3": "repl3", "etc": "etc" }; and this callback function: var replaceCallback = function(match) { if (lookup[match]) return lookup[match]; else return match; } How would you assess the performance of the above callback? Are there solid ways to improve it? Would if (match in lookup) //.... or even return lookup[match] | match; lead to opportunities for the JS compiler to optimize, or is it all the same thing?

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• Java Scripting Engine importing my classes does not work

  - by Ayman

  A code is worth 1000 words of explaining it :-) package jasim; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class JSTest { public static void main(String[] args) throws ScriptException { ScriptEngine jse = new ScriptEngineManager().getEngineByExtension("js"); jse.eval("println(new jasim.JSTest().toString)"); } @Override public String toString() { return "JSTest Object"; } } This code will fail with the below exception: Exception in thread "main" javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "jasim" is not defined. (<Unknown source>#1) in <Unknown source> at line number 1 How do I import my own classes into the ScriptEngine?

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• Unit Testing, IDataContext and Stored Procedures via Linq

  - by Terry_Brown

  hey folks, I'm currently using Stephen Walther's approach to unit testing Linq to SQL and the datacontext (http://stephenwalther.com/blog/archive/2008/08/17/asp-net-mvc-tip-33-unit-test-linq-to-sql.aspx) which is working a treat for all things linq. My Dal layer takes in an IDataContext, I use DI (via Unity) to concrete that up as the correct DataContext object and all works well. But - we have a company policy here of writes going via Stored Procs. Has anyone come up with a solution for mocking/faking the data context and still allowing stored procs to effectively be unit tested? I've got no real experience of any of the mocking frameworks (Rhino etc.) so if these are the correct means of doing this, I'd love some pointers on guides for them. Many thanks, Terry

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• Is there "native" support for JSON in JDK6 Script Engine?

  - by Ayman

  I'm using JDK6the standard Scripting. I need to store and retrieve some JavaScript Objects that also contain Java Objects to JSON. I loaded the json2.js into the ScriptENgine and can use it fine without issue if the objects are all created in the Scrip Engine. The moment I try to use my own Java classes, I get some errors like "object does not support toJSON" errors. I did not find much about JSON in Java Scripting / Rhino context. Am I doing something totally wrong? What's the best way of achieving the requirement?

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• iPad UIColor Saturation Issues

  - by Carter Allen

  I am trying to draw a UIColor on the screen of a view-based app, and I am trying to do so using HSB. It is absolutely necessary for me to use HSB in this case. I can create a UIColor object with any S value from 0.0f to 0.75f, but past that the numerical changes have no effect on the actual saturation displayed. I need it to be 1.0f, but it is still using 0.75f. Any ideas on why it is doing that, and how I can make it work?

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• cast across classloader?

  - by IttayD

  How can I do this: class Foo { public static Foo get() throws Exception { ClassLoader cl = new URLClassLoader(new URL[]{"foo.jar"}, null); // Foo.class is in foo.jar return (Foo)cl.loadClass("Foo").newInstance(); // fails on class cast } } What I need is for the JVM to consider the Foo instance from cl as if it is an instance of Foo from the classloader of the executing code. I have seen these approaches, none of them good for me (the above example is a toy example): Load the class (or a separate interface) by a class loader that is a parent of both the calling code and created classloader Serialize and deserialize the object.

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• C# & Adding Dynamic META Tags

  - by Bry4n

  I have this code protected void Page_Load(object sender, EventArgs e) { DataSet.DestinationsDataTable GetDestinations = (DataSet.DestinationsDataTable)dta.GetData(); Page.Title = GetDestinations.Rows[0]["Meta_Title"].ToString(); HtmlMeta hm = new HtmlMeta(); HtmlHead head = (HtmlHead)Page.Header; hm.Name = GetDestinations.Rows[0]["Meta_Desc"].ToString(); hm.Content = GetDestinations.Rows[0]["Meta_Key"].ToString(); head.Controls.Add(hm); } And it's returning this error (on a content page) The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>). Thoughts?

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• Get a tableview insertRowsAtIndexPaths to accept indexOfObject?

  - by Emil

  Hey. I have a code snippet that looks like this: [tableView beginUpdates]; [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft]; [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:[array indexOfObject:[array objectAtIndex:indexPath.row]]] withRowAnimation:UITableViewRowAnimationLeft]; [tableView endUpdates]; [tableView reloadData]; It gets executed when a user clicks on an accessory. The first part is only there to provide a smooth animation, and does not really matter, as the tableView is reloaded milliseconds later, but as I said, it's there to provide an animation. It is supposed to move a selected object from its current indexPath to the value from an array at the same indexPath. Obviously, this code does not work, so I just want to know what can be done to fix it? PS: I get a warning when compiling, too. The usual "passing argument 1 of 'arrayWithObject:' makes pointer from integer without a cast..." (line 3)

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