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Android ViewPager - Show preview of page on left and right
...ion)
Dataset change animations (including DiffUtil support)
The result
The code
In your Activity/Fragment, setup the ViewPager2:
// MyRecyclerViewAdapter is an standard RecyclerView.Adapter :)
viewPager2.adapter = MyRecyclerViewAdapter()
// You need to retain one page on each side so t...
What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
...f the same bug though.
This code fails with an access violation:
class A<T>
{
static A() { }
public A(out string s) {
s = string.Empty;
}
}
class B
{
static void Main() {
string s;
new A<object>(out s);
//new A<int>(out s);
...
C++ “virtual” keyword for functions in derived classes. Is it necessary?
...the same signature in the derived classes are considered "virtual" by default.
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Javascript Array.sort implementation?
...{
// Insertion sort is faster for short arrays.
if (to - from <= 10) {
InsertionSort(a, from, to);
return;
}
if (to - from > 1000) {
third_index = GetThirdIndex(a, from, to);
} else {
third_index = from + ((to - from) >> 1);
...
Avoid Android Lint complains about not-translated string
...ow how to ignore all the file, but you can do it string by string using:
<string name="hello" translatable="false">hello</string>
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Why does ASP.NET webforms need the Runat=“Server” attribute?
...sed due to grammatical errors in source):
[...] but the importance of <runat="server"> is more for consistency and extensibility.
If the developer has to mark some tags (viz. <asp: />) for the ASP.NET Engine to ignore, then there's also the potential issue of namespace collisio...
How to add a custom HTTP header to every WCF call?
...= new OperationContextScope((IContextChannel)channel))
{
MessageHeader<string> header = new MessageHeader<string>("secret message");
var untyped = header.GetUntypedHeader("Identity", "http://www.my-website.com");
OperationContext.Current.OutgoingMessageHeaders.Add(untyped);
...
Empty set literal?
...f still used for empty dict.
Python 2.7 (first line is invalid in Python <2.7)
>>> {1,2,3}.__class__
<type 'set'>
>>> {}.__class__
<type 'dict'>
Python 3.x
>>> {1,4,5}.__class__
<class 'set'>
>>> {}.__class__
<type 'dict'>
More he...
How to add a second css class with a conditional value in razor MVC 4
...in three ways:
Your answer (assuming this works, I haven't tried this):
<div class="details @(@Model.Details.Count > 0 ? "show" : "hide")">
Second option:
@if (Model.Details.Count > 0) {
<div class="details show">
}
else {
<div class="details hide">
}
Third opt...
Circle line-segment collision detection algorithm?
... c = f.Dot( f ) - r*r ;
float discriminant = b*b-4*a*c;
if( discriminant < 0 )
{
// no intersection
}
else
{
// ray didn't totally miss sphere,
// so there is a solution to
// the equation.
discriminant = sqrt( discriminant );
// either solution may be on or off the ray so need to ...