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How can I filter a Django query with a list of values?
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@OmkarDeshpande Exactly. Though,if you call get(), you will get an ObjectDoesNotExist error of course.
– DylanYoung
Nov 8 '18 at 18:59
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JavaScript inheritance: Object.create vs new
...erty that is not inherited from the super implementation, you just need to call super in the child's constructor: SomeBaseClass.call(this). Check this fiddle: jsfiddle.net/NhQGB
– ChrisRich
Oct 28 '12 at 10:08
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Qt: How do I handle the event of the user pressing the 'X' (close) button?
...t();
}
}
If you're subclassing a QDialog, the closeEvent will not be called and so you have to override reject():
void MyDialog::reject()
{
QMessageBox::StandardButton resBtn = QMessageBox::Yes;
if (changes) {
resBtn = QMessageBox::question( this, APP_NAME,
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What is the canonical way to check for errors using the CUDA runtime API?
...tag wiki , I see it is often suggested that the return status of every API call should checked for errors. The API documentation contains functions like cudaGetLastError , cudaPeekAtLastError , and cudaGetErrorString , but what is the best way to put these together to reliably catch and report er...
Creating threads - Task.Factory.StartNew vs new Thread()
...at sentence was a little bit too coarse. Synchronous execution of tasks is called inlining. When scheduling a task on the threadpool (default scheduler) from the UI Thread it will not occur. It will only occur if the ambient scheduler ('TaskScheduler.Current') is the same as the scheduler of a task ...
Why does an overridden function in the derived class hide other overloads of the base class?
...he word "hide"), you already know what is going on here. The phenomenon is called "name hiding". For some reason, every time someone asks a question about why name hiding happens, people who respond either say that this called "name hiding" and explain how it works (which you probably already know),...
How to pass a class type as a function parameter
I have a generic function that calls a web service and serialize the JSON response back to an object.
6 Answers
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Is AsyncTask really conceptually flawed or am I just missing something?
...ning. And the activity's window will always be valid until onDestroy() is called. By setting to null there, the async task will know that the activity is no longer valid. (And when a config changes, the previous activity's onDestroy() is called and the next one's onCreate() run without any messag...
What is the difference between object keys with quotes and without quotes?
...ds.
Some people might be tempted to pass in a string with whitespace then call o['I can have whitespace'] But I would call that bad practice.
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Error 1022 - Can't write; duplicate key in table
...boy with a foreign key X
The next constraint with the foreign key X can be called boy1
I'm sure you'd figure out better names than I did. ????
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