destroy

问题 I am writing a program which should: Open a window with the press of a button. Close the newly opened window with the press of another button. I'm using classes so I can insert the code into a larger program later. However, I can't get my buttons to load correctly. import tkinter as tk class Demo1(tk.Frame): def __init__(self): tk.Frame.__init__(self) self.pack() self.master.title("Demo 1") self.button1 = tk.Button(self, text = "Button 1", width = 25, command = self.new_window) self.button1

问题 The lifecycle of the @RequestScoped and @SessionScopedBean managed beans are managed by the Servlet container itself since they are basically stored as an attribute of HttpRequest and HttpSession respectively. How do JSF manage the lifecycle of the @ViewScopedBean ? I know it gets created when the view is created and is usable till there is a postback to a different view. But I found out that is not garbage collected immediately after we move from that view. 回答1: It will be destroyed when a

问题 I have a table, say Persons and if I do person = Person.find(:first) person.delete I get NoMethodError: undefined method `to_sym' for nil:NilClass from .rvm/gems/ruby-1.9.2-p320@rails-3.1.1/gems/activesupport-3.1.1/lib/active_support/whiny_nil.rb:48:in `method_missing' from .rvm/gems/ruby-1.9.2-p320@rails-3.1.1/gems/activerecord-3.1.1/lib/active_record/base.rb:1403:in `block in expand_hash_conditions_for_aggregates' from .rvm/gems/ruby-1.9.2-p320@rails-3.1.1/gems/activerecord-3.1.1/lib/active

问题 I'm having the strangest problem and I don't know how to fix it. My models have a polymorphic activity model associated with them that creates activities when a user creates a status, media, etc. Everything's working fine on my local build and even on my forked heroku app. But when I delete an item on my main app, it doesn't delete the corresponding activity. It only happens on the main app, both my local build and forked app delete the activity as expected. They're all using the same code. I

问题 I'm trying to write a simple script that gets the child count of a GameObject and then destroys the last child (I want it to basically function like a delete key) but I'm getting the error: Can't remove RectTransform because Image (Script) depends on it . Can someone tell me how to resolve this? using UnityEngine; using System.Collections; using UnityEngine.EventSystems; public class DeleteSymbol : MonoBehaviour, IPointerClickHandler { public GameObject deleteButton; public GameObject

问题 How can we destroy active accordion with all the content is have in it. I started with this function function DesctroyThisAccordion() { var active = jQuery("#accordion").accordion('option', 'active'); jQuery("#accordion").accordion('option', 'active').remove('h3'); jQuery("#accordion").accordion('option', 'active').remove('div'); } I am using jQuery UI plugin for accordion I am trying to find the active accordion and delete its h3 and div content. i works if i select the last in accordion /

问题 I am making an crossplatform terminal library. Because my library changes the state of the terminal, I need to revert all the changes that are made to the terminal when the process ends. I am now implementing this feature and thinking of ways how to restore to the original terminal state at the end. I thought that a static variable is initialized when the program starts and that when the program ends this static variable will be destroyed. Since my static variable is a struct which has

问题 I have a parent div which is resizable (width only) - within this div I have a number of other divs that are also resizable (height only). At times I want to either disable or destroy the parent width resizing but leave the inner height resizing in place. When I call $("#idTopDiv").resizable("destroy"); , this destroys the resizables on all of the child divs as well. Typical layout is:- <div id=idDivTop> <!-- Resizable width --> <div id=idInnerOne> </div> <div id=idInnerTwo> <!-- Resizable

问题 I created a dojo chart using; var pieChart = new dojox.charting.Chart2D("pieChart"); Afterwards I want to update/destroy this chart. SO I do; var pieChart = dojo.byId("pieChart"); pieChart.destroy(); This seems to be not functional. Am I doing something wrong here? best 回答1: As you're using dojox so dojo.byId will not return javascript object try using dijit.byId I think it'll work as suggested below: var pieChart = dijit.byId("pieChart"); pieChart.destroy(); the same problem I was facing

问题 (angular 8 in use) I have an issue currently with my code using a behaviour subject. Component A creates another component B trough the component factory. Now, Component A subscribes to component B it's status to know when to delete it. In this case, whenever there is an error in component B, Component A will change its own status and call Component B.destroy(). However, whenever I will run this destory method, I get an error in the logs saying ERROR Error: ViewDestroyedError: Attempt to use