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What does the clearfix class do in css? [duplicate]
.... For instance, when an empty container contains a floating 100px x 100px <div>, the <div> will not impart 100px in height to the container.
Unlike position:absolute, it affects the content that surrounds it. Content after the floated element will "wrap" around the element. It starts by...
How to compare two colors for similarity/difference
...don't know how to do that manually step by step. So it is even more difficult to think of a program.
19 Answers
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Return XML from a controller's action in as an ActionResult?
...
Use MVCContrib's XmlResult Action.
For reference here is their code:
public class XmlResult : ActionResult
{
private object objectToSerialize;
/// <summary>
/// Initializes a new instance of the <see cref="XmlResult"/> cl...
Performance of Arrays vs. Lists
... array. But unless you need to micro-optimise, keep it simple and use List<T> etc.
Of course, this only applies if you are reading all of the data; a dictionary would be quicker for key-based lookups.
Here's my results using "int" (the second number is a checksum to verify they all did the s...
make arrayList.toArray() return more specific types
...
Like this:
List<String> list = new ArrayList<String>();
String[] a = list.toArray(new String[0]);
Before Java6 it was recommended to write:
String[] a = list.toArray(new String[list.size()]);
because the internal implementa...
How to create a backup of a single table in a postgres database?
...ocalhost --port 5432 --username postgres --format plain --verbose --file "<abstract_file_path>" --table public.tablename dbname
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How to have stored properties in Swift, the same way I had on Objective-C?
...the boilerplate with a helper class.
public final class ObjectAssociation<T: AnyObject> {
private let policy: objc_AssociationPolicy
/// - Parameter policy: An association policy that will be used when linking objects.
public init(policy: objc_AssociationPolicy = .OBJC_ASSOCIATI...
Getting all names in an enum as a String[]
...ere's one-liner for any enum class:
public static String[] getNames(Class<? extends Enum<?>> e) {
return Arrays.stream(e.getEnumConstants()).map(Enum::name).toArray(String[]::new);
}
Pre Java 8 is still a one-liner, albeit less elegant:
public static String[] getNames(Class<? ...
Integrating the ZXing library directly into my Android application
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Here is an ImageView element to add to your Activity layout XML file:
<ImageView
android:id="@+id/qrCode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:layout_centerHorizontal="true"/>
Code snippet:
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CSS Classes & SubClasses
...CSS rules where it's appropriate. You can have a main class, but you can alter the rule for an element based on where it is in the document.
– Matt Howell
Feb 18 '09 at 6:28
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