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Java - JPA - @Version annotation
...sage triggers creation of an entity and there are multiple instances of an application listens to the message. I just want to avoid the unique constraint violation error..
– Manu
Jan 19 '16 at 6:28
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Custom toast on Android: a simple example
...ext.setText("Hello! This is a custom toast!");
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
And check out the below links also for a custom Toast.
Custom Toast with An...
Best ways to teach a beginner to program? [closed]
...ures very quickly without having to learn the GUI tools first. These early apps should be simple enough that you won't need to use any real debugging tools to make them work.
If nothing else things like FizzBuzz are good projects. Your first few apps should not have to deal with DBs, file system, c...
How do you use Mongoose without defining a schema?
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Actually "Mixed" (Schema.Types.Mixed) mode appears to do exactly that in Mongoose...
it accepts a schema-less, freeform JS object - so whatever you can throw at it. It seems you have to trigger saves on that object manually afterwards, but it seems like a fair trad...
Using an ORM or plain SQL? [closed]
For some of the apps I've developed (then proceeded to forget about), I've been writing plain SQL, primarily for MySQL. Though I have used ORMs in python like SQLAlchemy , I didn't stick with them for long. Usually it was either the documentation or complexity (from my point of view) holding me b...
How to call asynchronous method from synchronous method in C#?
... because they wrap exceptions in AggregateException.
This solution is only appropriate if MyAsyncMethod does not synchronize back to its context. In other words, every await in MyAsyncMethod should end with ConfigureAwait(false). This means it can't update any UI elements or access the ASP.NET reque...
Remote debugging with Android emulator
Is it possible to write the code/compile Android application on one machine and debug it remotely on the emulator launched on another? I'm sick and tired of the emulator constantly eating half of my laptop's CPU.
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Django connection to PostgreSQL: “Peer authentication failed”
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Had the same problem with a Rails app, and it was the same solution - the host needed to be configured in config/database.yml - that is to say, in that file I needed to add the line host: localhost (or wherever you postgres server is - mine was local)
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How to use WinForms progress bar?
...ker. If you have a loop that large in your WinForm it will block and your app will look like it has hanged.
Look at BackgroundWorker.ReportProgress() to see how to report progress back to the UI thread.
For example:
private void Calculate(int i)
{
double pow = Math.Pow(i, i);
}
private void...
Wrapping synchronous code into asynchronous call
I have a method in ASP.NET application, that consumes quite a lot of time to complete. A call to this method might occur up to 3 times during one user request, depending on the cache state and parameters that user provides. Each call takes about 1-2 seconds to complete. The method itself is synchron...