Hello, I have a NSURLConnection that receives data output from a url pointing to a php script on my server. Most of the time everything works fine and the data is retrieved in its complete form. However, sometimes I receive NULL or broken (ie the bottom half) of data at: - (void)connection:(NSURLConnection *)connection didReceiveData...
I need to allow saving null as integer value on mysql server, how can I do this? ...
i found this site: here its very well described why it works and why not. but my question is a little different. select 'true' from dual where 'test' not in ('test2',''); why does this query not returing a row? is '' handled like null? thx for your help ...
I am extracting values from a database. I am extracting a double value from a database using ResultSet rs = ....; while(...){ rs.getDouble("num"); } How do I check if the value of rs.getDouble("num") is a null. Since the value is stored as a (MySQL) double and I want to store it in my JVM as a double, I can't simply use !=null. Wh...
As everybody working with Oracle knows, it an empty Varchar2 will result in a NULL value when put into a Varchar2 column. I (and a coworker as well) thought we had read about a parameter that could be set in the database to change that behavior and actually differentiate between null values and empty Strings. Is there such a parameter ...
I have an entity bean which is made using Hibernate annotation. @Entity @org.hibernate.annotations.Entity(dynamicInsert=true,dynamicUpdate=true) @Table(name="[tbDDE]") public class DElement implements Serializable{ @Column(name = "[ID]", nullable = false, unique=true, updatable=false, insertable=false) @GeneratedValue(strateg...
Environment: Linux C++ / Qt 4x I do not understand why the following downcast returns NULL? I pasted base and derived class below. Thanks in advance for any tips or suggestions. -Ed void MainWindow::onRtledaEventHandler(fes::EventArgs eventArgs) { // This cast returns a NULL ? fes::AtsCommandEventArgs* atsCommandEventArgs = d...
I have a question with the "for" batch command in windows. I have a file called keys.txt which contains this line.. key,value,x86,windows7 I want to parse this line and store the 4 comma seperated variables in 4 variables. I accomplish that by the following windows batch script. for /F "tokens=1,2,3,4* delims=," %%i in (keys.tx...
Possible Duplicate: Do you use NULL or 0 (zero) for pointers in C++? Is it a good idea to use NULL in C++ or just the value 0? Is there a special circumstance using NULL in C code calling from C++? Like SDL? ...
How do I split a string by char 0 / byte 0 / 0x00 / \u0000 in flash actionscript 3 ...
In you database and/or code. Do you avoid nulls or do you explicitly program to handle them in your logic? What is best practice on how to handle nulls? ...
Hello, I'm trying to dynamically adjust the height of my rows depending on the (screen height - my layout height) / list.size. Unfortunately in the OnCreate method the layout height returns null (not so when i call it in an on click listener). Is there another method I can call it in? TIA ...
I am trying to develop a C++ application. Part of the Application is meant to create and initiate some properties of an Object and then store the object in a multi-dimensional array. Problem is after Object creation and storing the objects in the array, retrieving the Object values gives me pointers to NULL. Please see code below for ex...
For a constructor with a single parameter, is it OK to throw an ArgumentNullException inside the constructor if the parameter is null/empty? OR, should it be thrown in the method that actually uses the argument? Thanks. ...
Hello, I'm having some difficulties with null and a ComboBox in WPF/C#; If a add a null item it is not shown/listed in the ComboBox. Here is de XAML declaration of my ComboBox <ComboBox ItemsSource="{Binding Path=MyList}" SelectedItem="{Binding Path=Type}" /> MyList is declared as public ObservableCollection<Type> MyList...
Possible Duplicate: DateTime null value is it possible to set datetime object to null? ...
Hi there, I'm trying to grab an xml document from a url and then parse it. I am able to open it fine on a browser, but it doesnt seem to work through my javascript. Can anyone help me? function downloadUrl(url, callback) { var request = window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new ...
I have a class called Worker public class Worker : BaseEntity { public virtual int WorkerID { get; set; } public virtual string Name { get; set; } public virtual IList<Indemnification> Indemnifications { get; set; } } public class Indemnification : BaseEntity { public virtual int IndemnificationID { get; set; } pu...
I used to receive empty string when there was no value: [HttpPost] public ActionResult Add(string text) { // text is "" when there's no value provided by user } But now I'm passing a model [HttpPost] public ActionResult Add(SomeModel Model) { // model.Text is null when there's no value provided by user } So I have to use th...
Some elements in my array are empty based on what the user has entered. I need to remove these elements. This is my code to do so: // Remove empty elements foreach($linksArray as $link) { if($links == '') { unset($link); } } print_r($linksArray); But it doesn't work, $linksArray still has empty elements. I have als...