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Tying in to Django Admin's Model History
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When a user makes a change, add to the log like this (stolen shamelessly from contrib/admin/options.py:
from django.contrib.admin.models import LogEntry, ADDITION
LogEntry.objects.log_action(
user_id = request.user.pk,
content_type_id = ContentType.objects.get_for_model(object).p...
How to quit android application programmatically
...cally used when an application can be launched on to another task (such as from an ACTION_VIEW of a content type it understands) and the user has used the up navigation to switch out of the current task and into its own task. In this case, if the user has navigated down into any other activities of ...
What is CDATA in HTML? [duplicate]
...d can lead to cross-site scripting vulnerabilities if used to display data from untrusted sources, since the two kinds of parsers will disagree on where the CDATA section ends.
A brief SGML tutorial.
Also, see the Wikipedia entry on CDATA.
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Calling remove in foreach loop in Java [duplicate]
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To safely remove from a collection while iterating over it you should use an Iterator.
For example:
List<String> names = ....
Iterator<String> i = names.iterator();
while (i.hasNext()) {
String s = i.next(); // must be called...
How to get the path of a running JAR file?
...f your class.
Obviously, this will do odd things if your class was loaded from a non-file location.
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How to free memory in Java?
... they
currently occupy available for quick
reuse. When control returns from the
method call, the Java Virtual Machine
has made a best effort to reclaim
space from all discarded objects.
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Redis - Connect to Remote Server
...st to be sure.
After establishing it is listening where you expect it to, from a remote node which should have access try:
redis-cli -h REMOTE.HOST ping
You could also try that from the local host but use the IP you expect it to be listening on instead of a hostname or localhost. You should see ...
Ruby function to remove all white spaces?
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This is equivalent to trim. Please refer to the quote from @Tadeck above.
– Brett Holt
Jul 12 '12 at 2:48
3
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onActivityResult() & onResume() [duplicate]
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First calling onActivityResult() then onResume().
Quote from docs:
protected void onActivityResult (int
requestCode, int resultCode, Intent
data)
Since: API Level 1 Called when an
activity you launched exits, giving
you the requestCode you started it
with, the r...
Singletons vs. Application Context in Android?
...with Dianne Hackborn's response. We are bit by bit removing all singletons from our project in favor of lightweight, task scoped objects which can easiliy be re-created when you actually need them.
Singletons are a nightmare for testing and, if lazily initialized, will introduce "state indeterminis...