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android asynctask sending callbacks to ui [duplicate]
...}
EDIT
Since this answer got quite popular, I want to add some things.
If you're a new to Android development, AsyncTask is a fast way to make things work without blocking UI thread. It does solves some problems indeed, there is nothing wrong with how the class works itself. However, it brings s...
Matching an empty input box using CSS
How do I apply a style to an empty input box? If the user types something in the input field, the style should no longer be applied. Is this possible in CSS? I tried this:
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How to include “zero” / “0” results in COUNT aggregate?
...e function count() will not count NULL values and thus you'll get a zero.
If you want to learn more about outer joins, here is a nice tutorial: http://sqlzoo.net/wiki/Using_Null
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How can I distribute python programs?
...t works on Windows. You would on Windows have to install Python separately if you use distutils, in any case.
I'd probably recommend that you distribute it with disutils for Linux, and Py2exe or something similar for Windows. For OS X I don't know. If it's an end user application you would probably...
Get line number while using grep
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that would be command line switch -v. If you run 'grep --help' it will display all options
– Miro A.
Jul 9 '10 at 16:05
56
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Get type of all variables
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Get worked perfectly. Do you know if there is any performance penalty if get() is used to find the type of several large data frames which may be present in the variable list returned by objects()?
– user1625066
Oct 2 '1...
@UniqueConstraint and @Column(unique = true) in hibernate annotation
What is difference between @UniqueConstraint and @Column(unique = true) ?
4 Answers
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Is it considered acceptable to not call Dispose() on a TPL Task object?
...posed to spinning or potentially
executing the task it's waiting on).
If all you're doing is using
continuations, that event handle will
never be allocated
...
it's likely better to rely on finalization to take care of things.
Update (Oct 2012)
Stephen Toub has posted a blog titled Do...
Generating random numbers in Objective-C
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You should use the arc4random_uniform() function. It uses a superior algorithm to rand. You don't even need to set a seed.
#include <stdlib.h>
// ...
// ...
int r = arc4random_uniform(74);
The arc4random man page:
NAME
arc4random, arc4random...
How to sort a list of strings?
...
Basic answer:
mylist = ["b", "C", "A"]
mylist.sort()
This modifies your original list (i.e. sorts in-place). To get a sorted copy of the list, without changing the original, use the sorted() function:
for x in sorted(mylist):
print x
However, the examples above are a bit naive, ...