dynamic

问题 I am trying to speed up a script that I have written in Matlab that dynamically allocates memory to a matrix (basicallly reads a line of data from a file and writes it into a matrix, then reads another line and allocates more memory for a larger matrix to store the next line). The reason I did this instead of preallocating memory using zeroes() or something was that I don't know the exact size the matrix needs to be to hold all of the data. I also don't know the maximum size of the matrix, so

问题 I'm pretty new to java, and using netbeans for design a UI. What I am trying to do is... in the form. there are a jComboBox and a JTextField, where user can input the service he is choosing and an observation. So far so good. JComboBox is populated from database entries. The problem is, a user can input N different services at once (there are too much to be a bunch of checkboxes). I was thinking into add a "[+]" button (along with a "[-]" for removal). Thus, users click on [+] and another new

问题 Using Groovy 1.8. I'm trying to create a dynamic class definition that will cache properties per object. I did use propertyMissing without adding the property to the object just fine. I just think caching the properties would be more efficient. Right? Note that each instance must have its own different properties. The code below works fine: class C {} def c = new C() c.metaClass.prop = "a C property" println c.prop def x = new C() x.prop will output: a C property groovy.lang

问题 I have a form that is generated based on several DataTemplate elements. One of the DataTemplate elements creates a TextBox out of a class that looks like this: public class MyTextBoxClass { public object Value { get;set;} //other properties left out for brevity's sake public string FormatString { get;set;} } I need a way to "bind" the value in the FormatString property to the "StringFormat" property of the binding. So far I have: <DataTemplate DataType="{x:Type vm:MyTextBoxClass}"> <TextBox

问题 I have the following code which creates a dynamic object that is assigned to the smtpClient variable. public class TranferManager { public void Tranfer(Account from, Account to, Money amount) { // Perform the required actions var smtpClient = New.SmtpClient(); smtpClient.Send("info@bank.com", "from.Email", "Tranfer", "?"); // In the previous line I get a Microsoft.CSharp.RuntimeBinder.RuntimeBinderException // with the description = "'object' does not contain a definition for 'Send'" } }

问题 I have a function who gets a list of products from a webpage, and I want to add a row in a tableLayout for each element of the list. public void getProductsOfCategory() throws IOException{ new Thread(){ public void run(){ //background code... try { Bundle extras = getIntent().getExtras(); String categoryName = extras.getString("categoryName"); HttpGet httpget = new HttpGet("http://romal.hopto.org/foodadvisor/users/getProductsOfCategory.json?category="+categoryName); HttpResponse httpresp =

问题 Im trying to load the google maps api's dynamically. I'm using the following code: var head= document.getElementsByTagName('head')[0]; var script= document.createElement('script'); script.type= 'text/javascript'; script.src= 'http://www.google.com/jsapi?key=<MY_KEY>; head.appendChild(script); but when trying to create the map map = new GMap2(document.getElementById("map")); or map = new google.maps.Map2(document.getElementById("map")); I'm getting an error that google (or GMap2) is undefined.

问题 I would like to simplify the creation of "Custom Post Types" in WordPress as it is tedious to go through the same script and change all the custom post type name instances manually over and over. It's quite simple to achieve by creating a variable containing the CPT name and use it everywhere it is needed. This way, All I have to do is declare the variable in the beginning of the script and that should take care of the rest. The only issue is that, to make it work, I also need to prefix the

问题 Hi i am using reflections to achieve something. I have been given class name, method name of that class and parameter values that needs to be passed to that method in a file(Take any file. Not a constraint). I have to call that method with the parameters. This methods do not return anything. There is a huge list of methods in this classes and parameter list of each varies. E.g: method1(String, String, int, boolean) method1(String, int, boolean) and likewise i have different permutations and

问题 I'm trying to list classes I created in some folder in my Matlab folder - using only their name (class name) as an example, I have a class called 'SimpleString' - and I'm aiming to instantiate an object from that class, if all I know is that its name is 'SimpleString' So in realtime, I'd like to find out what classes are in a folder (done), then be able to instantiate any of those classes (my question) Thanks 回答1: You can use eval to instantiate the class using just the class name. instance =