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Resize fields in Django Admin
... is a real waste of space, when, i.e., editing a date field, 8 characters wide, or a CharField, also 6 or 8 chars wide, and then the edit box goes up to 15 or 20 chars.
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Weak and strong property setter attributes in Objective-C
...ewControllers (UI item's parents)
- strong is used with ARC and it basically helps you , by not having to worry about the retain count of an object. ARC automatically releases it for you when you are done with it.Using the keyword strong means that you own the object.
Example:
@property (s...
Asynchronous method call in Python?
I was wondering if there's any library for asynchronous method calls in Python . It would be great if you could do something like
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Restricting input to textbox: allowing only numbers and decimal point
...->
</SCRIPT>
</HEAD>
<BODY>
<INPUT id="txtChar" onkeypress="return isNumberKey(event)"
type="text" name="txtChar">
</BODY>
</HTML>
This really works!
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What is the reason behind “non-static method cannot be referenced from a static context”? [duplicate
...very common beginner mistake is when you try to use a class property "statically" without making an instance of that class. It leaves you with the mentioned error message:
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I want to get the type of a variable at runtime
...ch case the answer is rather simple:
val x = 5
x.getClass // int -- technically, an Int cannot be a class, but Scala fakes it
It would be better, however, to be more specific about what you want to accomplish, so that the answer can be more to the point.
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When should I create a destructor?
...on.
When should I manually create a destructor?
Almost never.
Typically one only creates a destructor when your class is holding on to some expensive unmanaged resource that must be cleaned up when the object goes away. It is better to use the disposable pattern to ensure that the resource ...
What's the fastest way to do a bulk insert into Postgres?
...
PostgreSQL has a guide on how to best populate a database initially, and they suggest using the COPY command for bulk loading rows. The guide has some other good tips on how to speed up the process, like removing indexes and foreign keys befor...
Why are two different concepts both called “heap”?
...namic memory allocation in C-style languages and the data structure both called "the heap"? Is there some relation?
9 Ans...
Programmatically relaunch/recreate an activity?
... starterIntent = getIntent();. Then when you want to restart the activity, call finish(); startActivity(starterIntent);
It isn't a very elegant solution, but it's a simple way to restart your activity and force it to reload everything.
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