dynamic

问题 Can I, and, if I can, how can I set the default value of a field in a MySQL table to the value of another field? Thing is: I have data, and each data object has its ID in the table. But, I would like the possibility to rearrange the data, changing their sorting index, without altering their ID. Thus, the field sort_num should by default be set to the value given to the auto-incremented indexed field ID . Thanks in advance! 回答1: I see two possible solutions for this: 1. Possibility: You use a

问题 I need to pass argument to JNLP dynamically for which I tried using a servlet which extends JnlpDownloadServlet and then includes a jsp which has all the JNLP XML written into it. But when I invoke the downloaded JNLP I get BadFieldException . Servlet public class TestServlet extends JnlpDownloadServlet { public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException { HttpServletRequest request = (HttpServletRequest) req; res.setContentType("application/x

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I want to change the possibility to get the answer of the value in the input in this form (to provide the russian word for a number) from the submit-Button to a dynamic AJAX-function to get the answer instantly. Thank you !!! With the help of @user1978142 it works perfectly. But now I search for a

问题 I have three frames inside separate three bpls, in my main application i have created three buttons and , i want to call the frames dynamically(one at a time )when the respective button is clicked (the frame can be shown in any control eg : TPanal) i have already done such a thing using Dlls but some in the Stack overflow community recommended me to use bpl (they said it is easy ), my previous post 回答1: Here there's an article about loading a form from a package (bpl file): http://edn

问题 I am trying to filter a model with two dropdown in an MVC project var model = (from x in db.TABLE.... join y in db.TABLE...).Where(where)... my logic is String where = string.Empty; if (search.anno != null) where = " ANNO = " + search.anno ; if (search.Cliente != null) { if (!string.IsNullOrEmpty(where)) { where += " And CODICE_CLIENTE = '" + search.Cliente + "'"; } else { where = " CODICE_CLIENTE = '" + search.Cliente + "'"; } } i get an error: System.Linq.Dynamic.ParseException: Character

问题 I need to extend on runtime a class with a generic signature. For example, the class to be extended is: public class A<T> {} I need to get this dynamically: public class B extends A<String> {} I cannot use Proxy because I need to add the obtained class to the ClassLoader. I'm trying with javassist but I have no idea of how make it in the correct way. 回答1: If you know type only at runtime, then you will have to use casting. Like: class TokenCounterMapper extends Mapper<Object, Object, Object,

问题 I know how to change classes with Jquery when the window size is changed, but I need it to be based on the width of a DIV and change dynamically when the DIV's width changes. $(window).resize(function() { var wrapWidth = $('.info-wrap').width(); if (wrapWidth >= 500) { $('#partOne').addClass('big'); $('#partTwo').addClass('big'); } else { $('#partOne').removeClass('big'); $('#partTwo').removeClass('big'); } }); This works when the window size changes. But, what can I use insead of $(window)

问题 I know how to change classes with Jquery when the window size is changed, but I need it to be based on the width of a DIV and change dynamically when the DIV's width changes. $(window).resize(function() { var wrapWidth = $('.info-wrap').width(); if (wrapWidth >= 500) { $('#partOne').addClass('big'); $('#partTwo').addClass('big'); } else { $('#partOne').removeClass('big'); $('#partTwo').removeClass('big'); } }); This works when the window size changes. But, what can I use insead of $(window)

问题 I am trying to use dynamic Eigen matrices and vectors with boost::odeint. The reason is that I want to solve a problem defined by user input of arbitrary size. The problem can be captured in a state space equation in the following form: x' = A*x + B*u (https://en.wikipedia.org/wiki/State-space_representation), which is basically the dxdt() function required for boost::odeint. Following code is an example of what I am trying do: #include <iostream> #include <Eigen/Core> #include <cstdlib>

问题 I have the below json data and the react code to populate the data dynamically var DATA = [{"processList": [{"processId":"1","processName":"Process1","htmlControlType":"radio","cssClassName":"radio"}, {"processId":"2","processName":"Process2","htmlControlType":"radio","cssClassName":"radio"}], "processIndexList": [{"processId":"1","indexId":"1","indexDesc":"First Name","htmlControlType":"textbox","cssClassName":"form-control"},{"indexId":"2","indexDesc":"Last Name","htmlControlType":"textbox"