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How to find the sum of an array of numbers
...MAScript 6), it can be this pretty:
const sum = [1, 2, 3].reduce((partial_sum, a) => partial_sum + a,0);
console.log(sum); // 6
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Cleaner way to do a null check in C#? [duplicate]
...n(string[] args)
{
Person nullPerson = null;
var isNull_0 = nullPerson.IsNull(p => p.contact.address.city);
var isNull_1 = new Person().IsNull(p => p.contact.address.city);
var isNull_2 = new Person { contact = new Contact() }.IsNull(p => p.contact.addres...
Error 1022 - Can't write; duplicate key in table
...raints are currently in use you can use the following query:
SELECT `TABLE_SCHEMA`, `TABLE_NAME`
FROM `information_schema`.`KEY_COLUMN_USAGE`
WHERE `CONSTRAINT_NAME` IN ('iduser', 'idcategory');
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What do “branch”, “tag” and “trunk” mean in Subversion repositories?
...a development effort. It should never be named after a resource (like 'vonc_branch') but after:
a purpose 'myProject_dev' or 'myProject_Merge'
a release perimeter 'myProjetc1.0_dev'or myProject2.3_Merge' or 'myProject6..2_Patch1'...
Tag is a snapshot of files in order to easily get back to that s...
Bogus foreign key constraint fail
...neccessary to write all the drop statements in one query, eg.
SET FOREIGN_KEY_CHECKS=0;
DROP TABLE my_first_table_to_drop;
DROP TABLE my_second_table_to_drop;
SET FOREIGN_KEY_CHECKS=1;
Where the SET FOREIGN_KEY_CHECKS=1 serves as an extra security measure...
...
Django: “projects” vs “apps”
...min.py startproject myproduct
cd myproduct
mkdir myproduct
touch myproduct/__init__.py
touch myproduct/models.py
touch myproduct/views.py
and so on. Would it help if I said views.py doesn't have to be called views.py? Provided you can name, on the python path, a function (usually package.package.v...
PHP function to get the subdomain of a URL
...
Here's a one line solution:
array_shift((explode('.', $_SERVER['HTTP_HOST'])));
Or using your example:
array_shift((explode('.', 'en.example.com')));
EDIT: Fixed "only variables should be passed by reference" by adding double parenthesis.
EDIT 2: Star...
Thread-safe List property
...ass ThreadSafeList<T> : IList<T>
{
protected List<T> _interalList = new List<T>();
// Other Elements of IList implementation
public IEnumerator<T> GetEnumerator()
{
return Clone().GetEnumerator();
}
System.Collections.IEnumerator Syste...
Is there a wikipedia API just for retrieve content summary?
...ect to an array and then grab it like this: $extract = current((array)$json_query->query->pages)->extract
– MarcGuay
Mar 15 '16 at 21:57
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Vibrate and Sound defaults on notification
... private static NotificationCompat.Builder buildNotificationCommon(Context _context, .....) {
NotificationCompat.Builder builder = new NotificationCompat.Builder(_context)
.setWhen(System.currentTimeMillis()).......;
//Vibration
builder.setVibrate(new long[] { 10...