dynamic

问题 How could I write Java code that is executed like javascript code used together with the eval function? What I would like to achieve would be something like this: System.execute ("String str = \"test\"; System.out.println(str);"); which would print the word 'test'. (10x dehmann ) A code sample would help a lot. 回答1: Look into BeanShell or Groovy. Both will give you reasonable solutions--but those solutions rely on my interpretation of your problem, which may be flawed. 回答2: I've used the

问题 This question already has answers here : Dynamic function name in javascript? (20 answers) Closed 3 years ago . How to create a function with a dynamic name? Something like: function create_function(name){ new Function(name, 'console.log("hello world")'); } create_function('example'); example(); // --> 'hello world' Also the function should be a Function Object so I can modify the prototype of the object. 回答1: window.example = function () { alert('hello world') } example(); or name = 'example

问题 I'm coming from the world of c#. in C# i am able to use the class dynamic http://msdn.microsoft.com/en-us/library/dd264741.aspx This allows me to not have to use templated/generic classes but achieve a simliar feel for certian situations. I'm have been unsuccessfull in internet searchs as unfortunately 'dynamic' and 'java' keywords turn up alot of unrelated infromation on dynamic architectures. I have dabbled a bit in javaFX and there is a type var which appears to have the same usage as c#'s

问题 I'm trying to dynamically load modules I've created. Right now this works properly: import structures.index But if I try the same thing by importing it dynamically, it fails. struct = __import__("structures.index") Error supplied is: Error ('No module named structures.index',) Any ideas why? Edit: When using full scope (it sort of works?): struct = __import__("neoform.structures.index") This doesn't throw any errors, however, it isn't loading the index module, it's loading the "neoform"

问题 I have the following interfaces that are part of an existing project. I'd like to make it possible to call the Store(..) function with dynamic objects. But I don't want to change the Interface hierarchy (if at all possible). public interface IActualInterface { void Store(object entity); } public interface IExtendedInterface : IActualInterface { //Interface items not important } public class Test : IExtendedInterface { public void Store(object entity) { Console.WriteLine("Storing: " + entity

问题 How can I wrote C# code to compile and run dynamically generated C# code. Are there examples around? What I am after is to dynamically build up a C# class (or classes) and run them at runtime. I want the generated class to interact with other C# classes that are not dynamic. I have seen examples that generate exe or dll files. I am not after that, I just want it to compile some C# code in memory and then run it. For instance, So here is a class which is not dynamic, it will be defined in my C

问题 I like the flexibility of Dynamic SQL and I like the security + improved performance of Prepared Statements. So what I really want is Dynamic Prepared Statements, which is troublesome to make because bind_param and bind_result accept "fixed" number of arguments. So I made use of an eval() statement to get around this problem. But I get the feeling this is a bad idea. Here's example code of what I mean // array of WHERE conditions $param = array('customer_id'=>1, 'qty'=>'2'); $stmt = $mysqli-

问题 I'm trying to understand what kind of memory hit I'll incur by creating a large array of objects. I know that each object - when created - will be given space in the HEAP for member variables, and I think that all the code for every function that belongs to that type of object exists in the code segment in memory - permanently. Is that right? So if I create 100 objects in C++, I can estimate that I will need space for all the member variables that object owns multiplied by 100 (possible

问题 We all know how to create dynamic UILabel font(Single Line) - lbl.adjustsFontSizeToFitWidth = true lbl.numberOfLines = 1 lbl.minimumScaleFactor = 0.1 lbl.baselineAdjustment = UIBaselineAdjustment.AlignCenters lbl.textAlignment = NSTextAlignment.Center The problem is that it gives different results for each given string. So for example if i have a string "Hello" and "Hello World" the calculated font size will be different.I need to create dynamic font with a single size for all strings.

问题 I have a project in which i have to connect with user specified database. I want to implement it in a proper codeigniter's style but i dont know how can i do that codeigniter stores database credentials in a database.php file is there any way to make it dynamic. Or is there any other approach for achieving this? I have googled it but did not find anything helpful. Any help and suggestion would be appreciated. UPDATE: The project is about reporting. I have a form in which i got the database