destroy

问题 I have a function that returns a TADODataset object: // inside DataModule: function TDM.GetWorkstationsList: TADODataset; var DS: TADODataSet; begin DS := TADODataSet.Create(nil); DS.Connection := MyConnection; // MyConnection is TADOConnection DS.CommandType := cmdText; DS.CommandText := 'SELECT * FROM Workstation'; DS.Active := True; Result := DS; end; This is how I plan to use it: // inside main form: tvWorkstation.DataController.DataSource.DataSet := DM.GetWorkstationsList; //

问题 I am trying to remove these elements from the grid. I was able to delete all of them by writing out one by one. I then wrote a for loop to make it expandable, then I run into this error message. "employee.destroy() AttributeError: 'str' object has no attribute 'destroy'" This is part of a bigger program, but as much as I can reduce to the core problem, here is my code: import tkinter as tk from tkinter import ttk labelemployee={} class Application(ttk.Frame): #inherent from frame. def __init_

问题 Thanks to @Miraj50 that helped me with the .destroy() tkinter: how to write a for loop to destroy a list of labels? For the next stage, I am trying to destroy the labels in both tabs. I knew how to share the same list to different tabs, but I don't know how to "link" them to the tabs. With my limited knowledge I tried def remove(self, name): for name in tabs[name]: for employee in labelemployee: labelemployee[employee].destroy() and it gives me this error: TypeError: remove() missing 1

问题 I develop simple c++ class to testing when c++ objects destroy; now I have a problem, when an object return by function, c++ create a new object and return that and when return reference destroy object what is my mistake ? simple class attached below. #include <iostream> using namespace std; static int freeCounter=0; class TestCopy { private: string pStr; public: TestCopy(const TestCopy &obj){ pStr=obj.pStr; } TestCopy(string &test){ pStr=test; } ~TestCopy(){ freeCounter++; cout <<

问题 is it possible to remove files from the folder when session will destroy. am doing that when a user come into the site and he can upload files(images, or textfiles), etc.. with out login into the site. and the files 'll store into my project's folder. now i need to do if the user quits from browser with out login i need to delete all the files what he upload in to project folder. how to do this ? Thanks in advance. 回答1: You can do this by implementing your own session handler. This way, you

问题 This question already has answers here : Why Session object destruction failed (3 answers) Closed 5 years ago . i ve seen so many questions about this and im still having problems with that... can someone give me a help? login page : <?PHP header("Content-Type: text/html; charset=utf-8"); $login = "root"; $senha = "test"; session_start(); session_set_cookie_params(0); if ($_POST['login'] && $_POST['senha']) { if ($login == $_POST['login'] && $senha == $_POST['senha']) { $_SESSION['login'] =

问题 I have the following simple models: class Event < ActiveRecord::Base has_many :participations has_many :users, :through => :participations end class Participation < ActiveRecord::Base belongs_to :event belongs_to :user end class User < ActiveRecord::Base has_many :participations has_many :events, :through => :participations end What I would like to do in my view is, dependant on the current users role, delete either an event and its participation record, or just a participation record on its

问题 I was using mysql db to run rspec in rails. After I create an object using factoryGirl, I would like to destroy it so that the db looks clean for the next spec running. Here is how i set up in my spec: before (:each) do User.destroy_all @user = Factory.create :user end after (:each) do @user.destroy end I got an error running rspec: Failure/Error: @user.destroy_all NameError: uninitialized constant User::connection Failure/Error: @user.destroy NameError: uninitialized constant User:

问题 I've been working on some javascript for a project and decided it should be a jQuery plugin. I've written some before but this needs to be more robust and destroyable. To that end I have followed a few tutorials but they all fall short when describing how to destroy the plugin. So how do I destroy the plugin? I can't seem to access $('.js-target).fullscreen('destroy') doesn't seem to work. Nor does $(.js-target).data('fullscreen').destroy() which returns TypeError: Cannot read property

问题 I have a few dozen activities: 1-Main, 1-Animation, 10-Other's and it's sub-sets of more activities (couple of dozen). From the Main, you can go to any of the Others via buttons. The Others call sub-set activities and they call the Animation activity. Each of the activities, including sub-sets and Animation, has a button to return to the Main activity. All buttons take user to correct activity. The issue : From the Main activity, I want to quit via using the device's Back key. But, what