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Super-simple example of C# observer/observable with delegates
...re's an example:
using System;
class Observable
{
public event EventHandler SomethingHappened;
public void DoSomething() =>
SomethingHappened?.Invoke(this, EventArgs.Empty);
}
class Observer
{
public void HandleEvent(object sender, EventArgs args)
{
Console.Wri...
How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
Have you ever taken a look under the hood at the jQuery 1.4 source code and noticed how it's encapsulated in the following way:
...
PHP mkdir: Permission denied problem
...to set the permissions to 777, that is a security problem as it gives read and write access to the world. It may be that your apache user does not have read/write permissions on the directory.
Here's what you do in Ubuntu
Make sure all files are owned by the Apache group and user. In Ubuntu it is...
How to store values from foreach loop into an array?
...
Declare the $items array outside the loop and use $items[] to add items to the array:
$items = array();
foreach($group_membership as $username) {
$items[] = $username;
}
print_r($items);
...
Looking for jQuery find(..) method that includes the current node
...
For jQuery 1.8 and up, you can use .addBack(). It takes a selector so you don't need to filter the result:
object.find('selector').addBack('selector')
Prior to jQuery 1.8 you were stuck with .andSelf(), (now deprecated and removed) whic...
How to make a DIV not wrap?
... me was:
display: inline-block;
white-space: nowrap;
But only in Chrome and Safari :/
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How do you remove the title text from the Android ActionBar?
I'm looking through the Holo.Light theme, and I can't seem to find the magic style to override to get rid of the title text that briefly shows up when my app first launches.
...
The first day of the current month in php using date_modify as DateTime object
...')
->format('jS, F Y');
If you prefer a concise way to do this, and already have the year and month in numerical values, you can use date():
<?php
echo date('Y-m-01'); // first day of this month
echo date("$year-$month-01"); // first day of a month chosen by you
...
Rails Root directory path?
...
In Rails 3 and newer:
Rails.root
which returns a Pathname object. If you want a string you have to add .to_s. If you want another path in your Rails app, you can use join like this:
Rails.root.join('app', 'assets', 'images', 'logo.p...
File Upload in WebView
I have been struggling to upload files from WebView since last few
days and there is no progress. I googled and implemented all suggested
solutions but none works, like: solutions suggested here ,
and so on.
...