dynamic

问题 When my program starts to run, how do I list available java source file names ? For example, I have a few dozen source files named "My_App_*.java" in my src directory, after I start my app, how can I call Java to list source files start with "My_App_" dynamically ? Frank 回答1: If you know where the source directory is: File srcFolder = new File("./src"); String[] files = srcFolder.list(); for(String file : files){ if(file.startsWith("My_App_")){ System.out.println(file); } } 回答2: new File(".")

问题 had a look for a guide on this but couldn't really find anything specific on it, and thought you guys could help. I have a javascript file which performs various tasks onLoad. Currently I have 5 buttons in an HTML page but what I would like to do is to is read from an array in the js file and dynamically create a number of buttons depending what was in the array. Similarly I want the buttons on click to be 'listened' for (alter an array in the js) I have an idea that I want to read the array

问题 I want to clear all values on a form where the control is a label and its name starts with "label" This code: List<Label> lbls = this.Controls.OfType<Label>().ToList(); foreach (var lbl in lbls) { if (lbl.Name.StartsWith("label")) { lbl.Text = string.Empty; } } ...doesn't work, because the lambda is finding nothing - lbls.Count = 0. Wouldn't this get ALL the controls on the form, even those that are children of other controls (such as, in my case, Panels)? 回答1: Try to use this method: public

问题 I have two files php (gettable.php and index.php) the index file display the result obtained by gettable.php every one seond, I want update the content of my table dynamically in the index (only new or changed value must be changed) using ajax, I am beginner in ajax. Help me please thank you gettable.php // // // I load data from the server(xml file) $xml = simplexml_load_string($result); foreach($xml as $node) { $name = ""; $value = -1; foreach($node->attributes() as $a => $b) { if($a ==

问题 I am designing a SSIS package which imports data from one data base to other database. In reality I need to import data from multiple data source to one destination database . One way to do, that I know is to use package configuration for all data sources (connection strings) and run multiple instances of the same package. But I want something like, I should provide as many connection strings as I need at a point of time in my config file and my package should connect to each database reading

问题 I would like to ask if how to create a dynamic attribute on the model class. Let's suppose I have a table structure like below code. Schema::create('materials', function (Blueprint $table) { $table->increments('id'); $table->string('sp_number'); $table->string('factory'); $table->text('dynamic_fields')->comment('All description of the material will saved as json'); $table->timestamps(); }); I have a column in my table structure named "dynamic_fields" that will hold a JSON string for the

问题 I am making some app and use firebase dynamic link. When I tested dynamic link on my android phone, It works well. And in my iOS, it also works, but the page does not change and any parameter does not pass. When I input deeplink like below picture on safari, it works well. Is there something else that I missed? I set Associated Domains on xcode. I am using iOS 10 and using ionic2(cordova)! 回答1: You can do that using SMS app. Paste your deepLink and send it. So when you click on the link your

问题 I need to write a sql for a prompt in a reporting tool. I get the list of multiple values in a variable separated by '-' and the number of such values can vary.(eg1."abc-def" eg2."abc-def-xyz"). Now I need to write sql in oracle of this form(logically) select something from somewhere where someColumn in 'abc' -- use substr to extract abc or someColumn in 'def' -- use substr to extract def or ...till we don't find '-'. I can't use plsql for the query. Either I may not be knowing to use the

问题 I have to store two types of information in any data structure for what I came up with the scrap solution of 2D array in C#. I have to store as: number of cluster in int data type cluster membership count in int data type If I use a 2D array as: Int32[,] _clusterMembership = new Int32[10, 10]; But the issue here is: I don't know what total number of cluster will be? I don't know what number of members each cluster will have? So the question is: How can I manage to store this information in C#

问题 I need to dynamically create variables inside a loop, but i have no idea how. I have read about using eval(); but all i found it's just about dynamically changing the value inside the variable. I need something like this: $(e).find('unidadeid').each(function () { countUnidades++; var Unidade[value inside countUnidades here] = $(this).text(); }); Be clear about your steps, please. I ask not for a solution, but for a help, as a learning. Thank you ;) 回答1: You have two options: Use an array: var