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What's the best practice for primary keys in tables?
...discovered immediately, then you're faced with changing your primary key.
My primary keys are all handled by the database program in the background and the user is never aware of them.
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Django Admin - Disable the 'Add' action for a specific model
...ust overload has_add_permission method in your Admin class like so:
class MyAdmin(admin.ModelAdmin):
def has_add_permission(self, request, obj=None):
return False
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What does Class mean in Java?
My question is as above. Sorry, it's probably a duplicate but I couldn't find an example with the <?> on the end.
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How to send POST request?
...={'number': 12524, to read data={'number': '12524',. I would've changed it myself but edits need to be more than 6 characters. Thanks
– kevthanewversi
Aug 18 '17 at 10:03
2
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Change Activity's theme programmatically
In particular cases I need to remove dialog theme from my activity but it doesn't seem to be working. Here's an example
4 A...
What is the difference between synchronous and asynchronous programming (in node.js)
...f the sql driver you use. The driver should spawn a new thread, connect to mysql and run the query. Once done, post the result to the event queue, and Node will call the callback.
– Salvatorelab
Oct 21 '13 at 7:36
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
... class instance at a later time.
In the implementation itself, because of my obsession with optimisation, and when I don't see a particularly huge maintainability benefit, I'll always favour curly-braces.
In tests and the implementation, I would never use dict() if there is a chance that the keys ...
Show AlertDialog in any position of the screen
... gypsicoder‘s answer, or the setting of wmlp doesn't take into effect by my test.
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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...like that at one point were like catnip for this crowd. :) But I'll repeat my previous point: optimizing for the user is (usually) more important than optimizing for the computer.
– Aaron left Stack Overflow
May 8 '18 at 21:26
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Why does Math.floor return a double?
...if you want to do a negative number:
int a=(int) -1.5; //Equal to -1
In my case, I didn't want to do this. I used the following code to do the rounding, and it seems to handle all of the edge cases well:
private static long floor(double a)
{
return (int) Math.floor(a);
}
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