clear

问题 I created an arraylist of strings List<String> textArray = new ArrayList<String>(); and then I added the strings(which I am getting from edittext) to textArray as follows String text = editText1.getText().toString(); textArray.add(text); Now I created a button and need to remove the string from the array when the button is clicked.But i dont know what to do. I know for arrays of bitmaps we clear a bitmap from array using recycle but Please suggest me how to remove or clear the string from

问题 I have been trying to write a shortest path algorithm, dijkstras algorithm, finding the shortest path for the first two vertices works just fine. I run into the problem while trying to clear a linked list and a priority queue. class llNode { public: int id; int source; int weight; llNode* next; llNode(int key, int distance, int from) { id=key; weight=distance; source=from; next = NULL; } }; class lList { private: llNode* root; llNode* end; void clearAll(llNode* toClear); public: lList() {

问题 public class MyCache { AbstractMap<String, AbstractMap<String, Element>> cache = new TreeMap<String, AbstractMap<String, Element>>(); public Boolean putElement(String targetNamespace, Element element) { ... } public void clear() { cache.clear(); } // is it better this way? public void deepClear() { for(AbstractMap<String, Element> innerMap : cache.values()) { innerMap.clear(); } cache.clear(); } } Is it necessary to iterate over the values of the root map and clear all the maps nested in the

问题 I am currently working on a WCF service and have a small issue. The service is a Polling Duplex service. I initiate data transfer through a message sent to the server. Then the server sends large packets of data back through the callback channel to the client fairly quickly. To stop the I send a message to the sever telling it do stop. Then it sends a message over the callback channel acknowledging this to let the client know. The problem is that a bunch of packets of data get buffered up to

问题 I am using Matlab 2012b to connect to another program (Imaris) from which I import data. The communication actually happens via java as interface. The problem I have is that the data is not deleted from the Java memory and piles up over time until Matlab ultimately crashes. "clear Java" does not work and produces the following warning: "Objects of Ice/ConnectionRefusedException class exist - not clearing" The only solution I found to really clear the Java memory is to restart Matlab, which is

问题 I'm trying to store data in my services similar to the answer in : Processing $http response in service app.factory('myService', function($http) { var promise; var myService = { async: function() { if ( !promise ) { // $http returns a promise, which has a then function, which also returns a promise promise = $http.get('test.json').then(function (response) { // The then function here is an opportunity to modify the response console.log(response); // The return value gets picked up by the then

问题 I can't seem to get the SelectedItems collection of a data bound WPF ListBox to clear. I've tried calling ListBox.SelectedItems.Clear(), i've tried setting the SelectedIndex to -1, setting the SelectedItem to null and calling ListBox.UnselectAll(). While debugging it appears that either the assignments don't take or something is resetting the SelectedItems collection, but I'm not sure what. I put a breakpoint in the SelectionChanged callback and it never gets hit unexpectedly yet the

问题 I have a page with several JQuery autocompletes. I have implemented a button to clear all selected values, but it does not work... I have tried to set $(...).text(""); but it does not work. Firebugs fails on the line and does not throw any error message. It quits the function. What is the right way to clear the selected value of JQuery autocompletes, from code? 回答1: Try using $(...).attr("value",""); Hope it works!! Sorry if i have misunderstood the question. 回答2: You should use: $('selector'

问题 I have this in my production environment: # The production environment is meant for finished, "live" apps. # Code is not reloaded between requests config.cache_classes = true How do I completely clear the cache so changes I deploy take effect? I have added content to one of the pages but it doesnt seem to show up since I set the config.cache_classes to equal true. Thanks, Danny 回答1: If you use passenger you need to create the file tmp/restart.txt or update its modification time if it's

问题 I'm reading data from 9 different sensors for my robot and I need to display them all steadily, in the same window so I can compare the values and see if any of the readings is off. The problem I'm having with both Serial.print and lcd.print is that the values are constantly moving and I can't really have a good look at them while moving the robot. I was thinking to call something like Serial.clear() before displaying anything else and that would just keep things steady and in one place,