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What exactly does the post method do?
...ueue.
So startAnimation will be fired in a new thread when it is fetched from the messageQueue
[EDIT 1]
Why do we use a new thread instead of UI thread (main thread)?
UI Thread :
When application is started, Ui Thread is created automatically
it is in charge of dispatching the events to the...
Why use a ReentrantLock if one can use synchronized(this)?
...ible to represent via a single monitor in a synchronized construct.
Aside from that, ReentrantLock supports lock polling and interruptible lock waits that support time-out. ReentrantLock also has support for configurable fairness policy, allowing more flexible thread scheduling.
The constructor fo...
Unix's 'ls' sort by name
...BK sort -V will sort by version numbers, so you get .. 2.10.2; 2.10.15; .. from man sort .. --sort=WORD will sort according to WORD: general-numeric -g, human-numeric -h, month -M, numeric -n, random -R, version -V
– mosh
Jan 21 '18 at 15:21
...
what is .netrwhist?
...the XDG base directory specifications in order to prevent your home folder from being littered up by dotfiles like ~/.vim, you may want to split cached files and history files from your configuration (which usually resides in the runtime path). So for example, to store .netrwhist in ~/.cache/vim, yo...
Make a div fill the height of the remaining screen space
...table on each property for an up-to-date compatibility status.
(taken from https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Flexible_boxes)
All major browsers and IE11+ support Flexbox. For IE 10 or older, you can use the FlexieJS shim.
To check current support you can also see here:
h...
What is the purpose of class methods?
...
When a user logs in on my website, a User() object is instantiated from the username and password.
If I need a user object without the user being there to log in (e.g. an admin user might want to delete another users account, so i need to instantiate that user and call its delete method):
...
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
...
I used the following psd that I derived from http://www.teehanlax.com/blog/?p=447
http://www.chrisandtennille.com/pictures/backbutton.psd
I then just created a custom UIView that I use in the customView property of the toolbar item.
Works well for me.
Edit: A...
How do I check if a string contains another string in Swift?
... // false
Generally Swift 4 has contains method however it available from iOS 8.0+
Swift 3.1
You can write extension contains: and containsIgnoringCase for String
extension String {
func contains(_ find: String) -> Bool{
return self.range(of: find) != nil
}
func containsIg...
How to determine the content size of a UIWebView?
...= aWebView.scrollView.contentSize.height; // Get the corresponding height from the webView's embedded scrollView.
aWebView.frame = frame; // Set the scrollView contentHeight back to the frame itself.
}
Swift 4.x
func webViewDidFinishLoad(_ aWebView: UIWebView) {
aWebView.scrollVi...
How does the extend() function work in jQuery?
...
From jQuery Documentation
Merge the contents of two or more
objects together into the first
object.
In a plugin context: If the user does not set the optional parameters for the function, then a default value will b...