You can not do exactly what you want to do right now, anyway, the best approach right now is to check when the application it’s running in background/inactive using the AppLifecycleState from the SDK (basically does what your library is trying to do) The library that you are using it’s outdated, since a pull request … Read more
You shouldn’t use a postgres command to fully delete your database, as you will not have permissions to create a new one. Instead you should use the heroku command to clear out your database: heroku pg:reset DATABASE_URL
It really depends on what you want to do in your onDestroy. This is what super.onDestroy does (in that order): Dismiss any dialogs the activity was managing. Close any cursors the activity was managing. Close any open search dialog If the logic you put inside onDestroy has something to do with those three things that … Read more
I rewrote your code in a more organized, better-practiced way: import tkinter as tk class Demo1: def __init__(self, master): self.master = master self.frame = tk.Frame(self.master) self.button1 = tk.Button(self.frame, text=”New Window”, width = 25, command = self.new_window) self.button1.pack() self.frame.pack() def new_window(self): self.newWindow = tk.Toplevel(self.master) self.app = Demo2(self.newWindow) class Demo2: def __init__(self, master): self.master = master self.frame … Read more
You’re looking for unset(). But take into account that you can’t explicitly destroy an object. It will stay there, however if you unset the object and your script pushes PHP to the memory limits the objects not needed will be garbage collected. I would go with unset() (as opposed to setting it to null) as … Read more
It will be destroyed when a postback with a non-null outcome is been performed, or, the number of (logical) views in session has exceeded and the particular view is the first one in LRU chain (in Mojarra, that’s configureable by com.sun.faces.numberOfViewsInSession and com.sun.faces.numberOfLogicalViews context parameters, each with a default value of 15), or, the number … Read more
Basically destroy runs any callbacks on the model while delete doesn’t. From the Rails API: ActiveRecord::Persistence.delete Deletes the record in the database and freezes this instance to reflect that no changes should be made (since they can’t be persisted). Returns the frozen instance. The row is simply removed with an SQL DELETE statement on the … Read more