The following demo features an <output> element's use of the [for] and [form] attributes. Keep in mind, <output> needs JavaScript in order to function. Inline JavaScript is commonly used in forms as this example demonstrates. Although the <input> elements are type="number"...
In classes, super.foo() will look in superclasses only. If you want to call a default implementation from a superinterface, you need to qualify super with the interface name: Fooable.super.foo().
public interface Fooable {
default int foo() {return 3;}
}
public class A extends Object impl...
In case you have reverted back to a past commit and lost a newer commit you can recover the lost commit by running
git reflog
Then find your lost commit, and reset back to it by doing
git reset HEAD --hard <sha1-of-commit>
In case you have accidentally commited a delete on a file and later realized that you need it back.
First find the commit id of the commit that deleted your file.
git log --diff-filter=D --summary
Will give you a sorted summary of commits which deleted files.
Then proceed to restore the file b...
To restore a file to a previous version you can use reset.
git reset <sha1-of-commit> <file-name>
If you have already made local changes to the file (that you do not require!) you can also use the --hard option
To recover a deleted branch you need to find the commit which was the head of your deleted branch by running
git reflog
You can then recreate the branch by running
git checkout -b <branch-name> <sha1-of-commit>
You will not be able to recover deleted branches if git's garbage col...
CardView is a member of the Android Support Library, and provides a layout for cards.
To add CardView to your project, add the following line to your build.gradle dependencies.
compile 'com.android.support:cardview-v7:25.1.1'
A number of the latest version may be found here
In your layout you ...
var parts = new[] { "Foo", "Bar", "Fizz", "Buzz"};
var joined = string.Join(", ", parts);
//joined = "Foo, Bar, Fizz, Buzz"
SQL Server 2008
WITH XMLNAMESPACES (
DEFAULT 'http://www.w3.org/2000/svg',
'http://www.w3.org/1999/xlink' AS xlink
)
SELECT
'example.jpg' AS 'image/@xlink:href',
'50px' AS 'image/@width',
'50px' AS 'image/@height'
FOR XML PATH('svg')
<svg xmlns:xlink="http:...
SELECT
'XPath example' AS 'head/title',
'This example demonstrates ' AS 'body/p',
'https://www.w3.org/TR/xpath/' AS 'body/p/a/@href',
'XPath expressions' AS 'body/p/a'
FOR XML PATH('html')
<html>
<head>
<title>XPath example</title>
&...
var wsHost = "ws://my-sites-url.com/path/to/echo-web-socket-handler";
var ws = new WebSocket(wsHost);
var value = "an example message";
//onmessage : Event Listener - Triggered when we receive message form server
ws.onmessage = function(message) {
if (message === value...
String can be formatted to accept a padding parameter that will specify how many character positions the inserted string will use :
${value, padding}
NOTE: Positive padding values indicate left padding and negative
padding values indicate right padding.
Left Padding
A left padding of 5 (a...
You can use a relative path to link to pages on the same website.
<a href="/example">Text Here</a>
The above example would go to the file example at the root directory (/) of the server.
If this link was on http://example.com, the following two links would bring the user...
5.1
The reduce() method applies a function against an accumulator and each value of the array (from left-to-right) to reduce it to a single value.
Array Sum
This method can be used to condense all values of an array into a single value:
[1, 2, 3, 4].reduce(function(a, b) {
return a + b;
});
...
5.1
.some and .every allow a logical connective of Array values.
While .some combines the return values with OR, .every combines them with AND.
Examples for .some
[false, false].some(function(value) {
return value;
});
// Result: false
[false, true].some(function(value) {
return value...
A lambda expression evaluated in a class' member function is implicitly a friend of that class:
class Foo
{
private:
int i;
public:
Foo(int val) : i(val) {}
// definition of a member function
void Test()
{
auto lamb = [](Foo &foo, int val)
...
