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Fragment onCreateView and onActivityCreated called twice
... mTag);
FragmentTransaction ft = mActivity.getFragmentManager().beginTransaction();
ft.detach(mFragment);
ft.commit();
}
Later in the activity onCreate the previously selected tab was selected from the saved instance state. See below:
if (savedInstanceState != null) {
...
How many Activities vs Fragments?
...
I agree that the tutorials are very simplified. They just introduce Fragments but I do not agree with the pattern as suggested.
I also agree that it is not a good idea to duplicate your app's logic across many Activities (see DRY Principle on wikipedia).
I prefer the pattern use...
RSS Feeds in ASP.NET MVC
...lt RssFeed()
{
var items = new List<SyndicationItem>();
for (int i = 0; i < 20; i++)
{
var item = new SyndicationItem()
{
Id = Guid.NewGuid().ToString(),
Title = SyndicationContent.CreatePlaintextContent(String.Format("My Title {0}", Guid....
How to generate keyboard events in Python?
...
It can be done using ctypes:
import ctypes
from ctypes import wintypes
import time
user32 = ctypes.WinDLL('user32', use_last_error=True)
INPUT_MOUSE = 0
INPUT_KEYBOARD = 1
INPUT_HARDWARE = 2
KEYEVENTF_EXTENDEDKEY = 0x0001
KEYEVENTF_KEYUP = 0x0002
KEYEVENTF_UNICODE = 0x000...
What is a callback function?
...it is a function that is "called at the back" of the function it is passed into.
Maybe a better name would be a "call after" function.
This construct is very useful for asynchronous behaviour where we want an activity to take place whenever a previous event completes.
Pseudocode:
// A function ...
Can you help me understand Moq Callback?
...mocked method Setup you perform, you get to indicate things like:
constraints on inputs
the value for / way in which the return value (if there is one) is to be derived
The .Callback mechanism says "I can't describe it right now, but when a call shaped like this happens, call me back and I'll do...
To Workflow or Not to Workflow?
...is a learning curve, you do have to do some things differently. The main point is long running and serialization, which is something the average developer is not used to and requires some thought to get right as I hear far too often that people have problems serializing an entities framework data co...
Truly understanding the difference between procedural and functional
...values.
Let's consider an analogy with "regular" values. We can take two integer values and combine them using the + operator to obtain a new integer. Or we can multiply an integer by a floating point number to get a floating point number.
In functional programming, we can combine two function v...
How to configure slf4j-simple
...
@RobertHunt How to save this log into file ?
– Devavrata
Jun 28 '15 at 21:56
7
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How do you know when to use fold-left and when to use fold-right?
...
You can transfer a fold into an infix operator notation (writing in between):
This example fold using the accumulator function x
fold x [A, B, C, D]
thus equals
A x B x C x D
Now you just have to reason about the associativity of your operato...