What are the best practices for SQLite on Android?

What are the best practices for SQLite on Android?

What would be considered the best practices when executing queries on an SQLite database within an Android app?Is it safe to run inserts, deletes and select queries from an AsyncTask's doInBackground? Or should I use the UI Thread? I suppos

Why saving changes to a database fails?

Why saving changes to a database fails?

I have following C# code in a console application.Whenever I debug the application and run the query1 (which inserts a new value into the database) and then run query2 (which displays all the entries in the database), I can see the new entr

How does the “this” keyword in Javascript act within an object literal? [duplicate]

How does the “this” keyword in Javascript act within an object literal? [duplicate]

This question already has an answer here: Self-references in object literal declarations 18 answers I've seen How does "this" keyword work within a fun

How to call Objective-C code from Swift

How to call Objective-C code from Swift

In the new Swift language from Apple, how does one call Objective-C code?Apple mentioned that they could co-exist in one application, but does this mean that one could technically re-use old classes made in Objective-C whilst building new c

How to make a div 100% height of the browser window?

How to make a div 100% height of the browser window?

I have a layout with two columns - a left div and a right div.The right div has a grey background-color, and I need it to expand vertically depending on the height of the user's browser window. Right now the background-color ends at the la

Using Auto Layout in UITableView for dynamic cell layouts & variable row heights

Using Auto Layout in UITableView for dynamic cell layouts & variable row heights

How do you use Auto Layout within UITableViewCells in a table view to let each cell's content and subviews determine the row height (itself/automatically), while maintaining smooth scrolling performance? 1:TL;DR: Don't like reading? Jump

Non-static variable cannot be referenced from a static context

Non-static variable cannot be referenced from a static context

I've written this test code:class MyProgram{ int count = 0; public static void main(String[] args) { System.out.println(count); }}But it gives the following error:Main.java:6: error: non-static variable count cannot be re

Daylight saving time and time zone best practices [closed]

Daylight saving time and time zone best practices [closed]

I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving time, in particular for dealing with the actual change overs. If you have anything to add, please doMany systems are dependent on k

Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference

Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference

Given the following examples, why is outerScopeVar undefined in all cases?var outerScopeVar;var img = document.createElement('img');img.onload = function() { outerScopeVar = this.width;};img.src = 'lolcat.png';alert(outerScopeVar);var ou

Change outgoing mail address from root@servername - rackspace sendgrid postfix [closed]

Change outgoing mail address from [email protected] - rackspace sendgrid postfix [closed]

So I recently setup my Rackspace server (Ubuntu LAMP stack) to use Postfix and Sendgrid for outgoing email. It works great in that my test mail from the cmd line gets delivered via sendgrid smtp. However, when I receive the email it says it

How do you get Angular.js to work in a Windows 8 store app?

How do you get Angular.js to work in a Windows 8 store app?

The app runs but Angular data objects are not recognized.Here is the JavaScript error I am getting:Exception was thrown at line 1059, column 11 in ms-appx://28934b41-4dd2-4414-b9a9-a73c11c1b743/js/angular.js0x800a139e - JavaScript runtime e

C++: Create abstract class with abstract method and override the method in a subclass

C++: Create abstract class with abstract method and override the method in a subclass

How to create in C++ an abstract class with some abstract methods that I want to override in a subclass? How should the .h file look? Is there a .cpp, if so how should it look?In Java it would look like this:abstract class GameObject{ pu

JSON schema validation with arbitrary keys

JSON schema validation with arbitrary keys

I am using validictory for validating the attached JSON data and schema.Working so far.However the data dictionary can have arbitrary string keys (others than 'bp' but). The key 'bp' in the schema here is hard-coded...it can be a string fro

Is .zfproject.xml a must in a Zend Framework project?

Is .zfproject.xml a must in a Zend Framework project?

Is .zfproject.xml a must in a Zend Framework project?What does it do?Is it's location absolute? 1:When using Zend_Tool to manage your Zend Framework project, .zfproject.xml will contain your application structure state. This is required

Clearing require cache

Clearing require cache

I am trying to delete a module from cache as suggested here.In the documentation we read: require.cache Object Modules are cached in this object when they are required. By deleting a key value from this object, the next require w

Python Logging to Tkinter Text Widget

Python Logging to Tkinter Text Widget

Does any one out there have an example of how to setup logging in Python to a Tkinter Text Widget? I have seen this used in several apps but cannot figure out how to direct the logging to anything other than a log file. 1:You should sub

Mongoose create multiple documents

Mongoose create multiple documents

I know in the latest version of Mongoose you can pass multiple documents to the create method, or even better in my case an array of documents.var array = [{ type: 'jelly bean' }, { type: 'snickers' }];Candy.create(array, function (err, jel

In Python, is object() equal to anything besides itself?

In Python, is object() equal to anything besides itself?

If I have the code my_object = object() in Python, will my_object be equal to anything except for itself?I suspect the answer lies in the __eq__ method of the default object returned by object(). What is the implementation of __eq__ for thi

Missing script/generate in Rails 3

Missing script/generate in Rails 3

I just installed Rails 3 and created my first app. The install of Rails3 + ruby 1.9 went very smoothly but I am missing the generate script in script/generate.I have created a new app from scratch with no options to verify.Any idea why thi

Assign results of globbing to a variable in Bash

Assign results of globbing to a variable in Bash

My colleague, Ryan, came to me with a bug in his Bash script, and I identified the problem with this test:$ mkdir ryan$ mkdir ryan/smells-bad$ FOO=ryan/smells-*$ echo $FOOryan/smells-bad$ touch $FOO/rotten_eggstouch: cannot touch `ryan/smel

Where does Console.WriteLine go in Debug?

Where does Console.WriteLine go in Debug?

I found this question, but what I want to know is different - does the output from Console.WriteLine go anywhere when debugging? I know that for it to go to the output window I should should Debug.WriteLine() or other methods, but where doe

Starting out with an application for Facebook Connect on the iPhone

Starting out with an application for Facebook Connect on the iPhone

I would like to make a button in order for the user to be able to connect and join a group I have created in Facebook. Is this possible with Facebook Connect? Is there a tutorial or something? 1:You can try checking out the newly-updated

Client Side Validations and Rails4

Client Side Validations and Rails4

I integrated client side validations with rails4 using the new branches available using the following gemsgem 'simple_form', '~> 3.0.0.rc'gem 'client_side_validations', github: "bcardarella/client_side_validations", :branch => "4-0-beta"gem

Replacing values in one column with another based on a 3rd column matching a 4th

Replacing values in one column with another based on a 3rd column matching a 4th

I'm working with the following example:Original Modified New_Orig New1 2 1 02 4 1 03 6 4 04 8 5

Android: failed to setContentView when switching to ListActivity

Android: failed to setContentView when switching to ListActivity

[update] I got the error, which says "Your content must have a ListView whose id attribute is 'android.R.id.list'". Appearently nothing in my xml is ListView. But is that required?This is an follow-up issue on my previous questionandroid: w