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Android AsyncTask threads limits?
I am developing an application where I need to update some info every time user logs in to the system, I also use database in the phone. For all those operations (updates, retrieving data from db and etc.) I use async tasks. As up till now I didn't see why I shouldn't use them, but recently I experi...
X-Frame-Options Allow-From multiple domains
...use it in old or new projects. Pages or Web apps using it may break at any time.
The modern alternative is the Content-Security-Policy header, which along many other policies can white-list what URLs are allowed to host your page in a frame, using the frame-ancestors directive.
frame-ancestors sup...
Difference between TCP and UDP?
...e efficient than TCP because it uses non ACK. It's generally used for real time communication, where a little percentage of packet loss rate is preferable to the overhead of a TCP connection.
In certain situations UDP is used because it allows broadcast packet transmission. This is sometimes funda...
STL or Qt containers?
...ndard" by using stl containers. And whats the point of a container if everytime you want to use it for anything useful, you have to copy it out into the corresponding Qt container?
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Possible reason for NGINX 499 error codes
...er answered the request. In my experience is usually caused by client side timeout. As I know it's an Nginx specific error code.
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Is List a subclass of List? Why are Java generics not implicitly polymorphic?
... @ruakh: The problem is that you're then punting to execution time something which can be blocked at compile-time. And I'd argue that array covariance was a design mistake to start with.
– Jon Skeet
Jul 3 '13 at 17:22
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DbArithmeticExpression arguments must have a numeric common type
...
Arithmetic with DateTime is not supported in Entity Framework 6 and earlier. You have to use DbFunctions*. So, for the first part of your statement, something like:
var sleeps = context.Sleeps(o =>
DbFunctions.DiffHours(o.ClientDateTimeS...
How do I include a file over 2 directories back?
...rectory
So ../ gets you one directory back not two.
Chain ../ as many times as necessary to go up 2 or more levels.
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ADB Shell Input Events
... Just for extra information. Swipe only worked on my phone if the time was larger than 120!! adb shell input swipe 200 800 200 400 200
– Jose Rodrigues
Nov 16 '18 at 12:56
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How do I include a JavaScript file in another JavaScript file?
...t page loading by using URL hash. My problem is when i click same page 2/3 times js loading 2/3 times. thats why every event occurs multiple time. I want to check js file already loaded into footer/head before appending in that code: var js = document.createElement("script"); js.type = "text/java...