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Determining the current foreground application from a background task or service
...etRunningAppProcesses() method as this returns all sorts of system rubbish from my experience and you'll get multiple results which have RunningAppProcessInfo.IMPORTANCE_FOREGROUND. Use getRunningTasks() instead
This is the code I use in my service to identify the current foreground application, i...
Postgres - FATAL: database files are incompatible with server
...
If you recently upgraded to 11 or 12 from 10.x you can run the below command to upgrade your postgres data directory retaining all data:
brew postgresql-upgrade-database
The above command is taken from the output of brew info postgres
...
How do I export UIImage array as a movie?
...ay with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
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How can I open a URL in Android's web browser from my application?
How to open an URL from code in the built-in web browser rather than within my application?
36 Answers
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How to get parameters from a URL string?
...sed using $_GET array. So,
echo $_GET['email'];
will extract the emails from urls.
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Is there some way to PUSH data from web server to browser?
...erver message-based communication.
You can easily initiate the connection from javascript:
var ws = new WebSocket("ws://your.domain.com/somePathIfYouNeed?args=any");
ws.onmessage = function (evt)
{
var message = evt.data;
//decode message (with JSON or something) and do the needed
};
The se...
How can I cast int to enum?
...
From an int:
YourEnum foo = (YourEnum)yourInt;
From a string:
YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);
// The foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags...
Why does sizeof(x++) not increment x?
...
From the C99 Standard (the emphasis is mine)
6.5.3.4/2
The sizeof operator yields the size (in bytes) of its operand, which may be an expression or the parenthesized name of a type. The size is determined from the ty...
Is modern C++ becoming more prevalent? [closed]
... getting started with the language seem to be taught these concepts almost from day 1.
18 Answers
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SQLAlchemy: cascade delete
... gets deleted, delete-orphan also deletes any children that were "removed" from the parent, even if the parent is not deleted)
EDIT: just found out: if you really want to define the relationship on the Child class, you can do so, but you will have to define the cascade on the backref (by creating t...