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How to implement the Java comparable interface?
...
You just have to define that Animal implements Comparable<Animal> i.e. public class Animal implements Comparable<Animal>. And then you have to implement the compareTo(Animal other) method that way you like it.
@Override
public int compareTo(Animal other) {
return In...
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...
Display Animated GIF
...lso put (main/assets/htmls/name.gif) [with this html adjust to the size]
<html style="margin: 0;">
<body style="margin: 0;">
<img src="name.gif" style="width: 100%; height: 100%" />
</body>
</html>
declare in your Xml for example like this (main/res/layout/name.xml):...
What is the purpose of “return await” in C#?
...urn await in a try block).
Consider these two versions of a method:
Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
return foo.DoAnotherThingAsync();
}
}
async Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
r...
How can I fill a div with an image while keeping it proportional?
I found this thread — How do you stretch an image to fill a <div> while keeping the image's aspect-ratio? — that is not entirely the thing that I want.
...
How to stop EditText from gaining focus at Activity startup in Android
...ut or ConstraintLayout) like the following example will fix the problem.
<!-- Dummy item to prevent AutoCompleteTextView from receiving focus -->
<LinearLayout
android:focusable="true"
android:focusableInTouchMode="true"
android:layout_width="0px"
android:layout_height="0...
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 ...
How to get a list of installed android applications and pick one to run
...ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> pkgAppsList = context.getPackageManager().queryIntentActivities( mainIntent, 0);
You will get all the necessary data in the ResolveInfo to start a application. You can check ResolveInfo javadoc here.
...
How do you match only valid roman numerals with a regular expression?
...ally restrains it to between 0 and 4000. It's a relatively simple:
0: <empty> matched by M{0}
1000: M matched by M{1}
2000: MM matched by M{2}
3000: MMM matched by M{3}
4000: MMMM matched by M{4}
You could, of course, use something like M* to allow any number (incl...
How does one escape backslashes and forward slashes in VIM find/search?
... characters most anywhere else in linuxy programs, with a backslash:
:%s/<dog\/>/<cat\\>
But note that you can select a different delimiter instead:
:%s@<doc/>@<cat\\>@
This saves you all typing all those time-consuming, confusing backslashes in patterns with a ton of s...