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How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...dded a lot of info on how the GC works in Dalvik 2.0 (a.k.a ART).
You can read about it here - Debugging ART Garbage Collection.
It also discusses some tools to get information on the GC behavior for your app.
Sending a SIGQUIT to your app process will essentially cause an ANR, and dump the appli...
Timer & TimerTask versus Thread + sleep in Java
...ge of TimerTask is that it expresses your intention much better (i.e. code readability), and it already has the cancel() feature implemented.
Note that it can be written in a shorter form as well as your own example:
Timer uploadCheckerTimer = new Timer(true);
uploadCheckerTimer.scheduleAtFixedRat...
What does “javascript:void(0)” mean?
...ve got used to middle-click-for-new-tab: it looks like a link, you want to read it in a new tab, but it turns out to be not a real link at all, and gives unwanted results like a blank page or a JS error when middle-clicked.
<a href="#"> is a common alternative which might arguably be less bad...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
... [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
echo "already running"
exit
fi
# make sure the lockfile is removed when we exit and then claim it
trap "rm -f ${LOCKFILE}; exit" INT TERM EXIT
echo $$ > ${LOCKFILE}
# do stuff
sleep 1000
rm -f ${LOCKFILE}
The trick here i...
Safe (bounds-checked) array lookup in Swift, through optional bindings?
..."Banana", "Coconut"]
var str: String = "I ate a \( fruits[0] )"
If you already know the index exists, as you do in most cases where you use an array, this code is great. However, if accessing a subscript could possibly return nil then you have changed the return type of Array's subscript method to...
StringBuilder vs String concatenation in toString() in Java
...So - to your question:
The second approach would be faster, but it's less readable and harder to maintain.
As I said, in your specific case you would probably not see the difference.
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improv...
How to override and extend basic Django admin templates?
...
Update:
Read the Docs for your version of Django. e.g.
https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#admin-overriding-templates
https://docs.djangoproject.com/en/2.0/ref/contrib/admin/#admin-overriding-templates
https://d...
Django FileField with upload_to determined at runtime
...
You've probably read the documentation, so here's an easy example to make it make sense:
def content_file_name(instance, filename):
return '/'.join(['content', instance.user.username, filename])
class Content(models.Model):
name = ...
What is the meaning of erb?
... article contains more detail and a short guide to using ERB. You can also read the official docs.
Note: the quoted block above was previously posted as an answer by another user without linking to An Introduction to ERB Templating or acknowledging that it was not that user's work. That post was (r...
Why is '+' not understood by Python sets?
...he elements in the set are taken to be the natural numbers.
Because int already defines set-like operators as |, & and ^, it was natural for the newer set type to use the same interface.
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