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Will iOS launch my app into the background if it was force-quit by the user?
I am triggering a background fetch by using the content-available flag on a push notification. I have the fetch and remote-notification UIBackgroundModes enabled.
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Custom fonts and XML layouts (Android)
...ext context, AttributeSet attrs) {
super(context, attrs);
setCustomFont(context, attrs);
}
public TextViewPlus(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setCustomFont(context, attrs);
}
private void setCust...
Confused by python file mode “w+”
...e is opened for writing in binary mode. On Unix systems (Linux, Mac OS X, etc.), binary mode does nothing - they treat text files the same way that any other files are treated. On Windows, however, text files are written with slightly modified line endings. This causes a serious problem when dealin...
Why is it important to override GetHashCode when Equals method is overridden?
...t if your item will be used as a key in a dictionary, or HashSet<T>, etc - since this is used (in the absence of a custom IEqualityComparer<T>) to group items into buckets. If the hash-code for two items does not match, they may never be considered equal (Equals will simply never be call...
html (+css): denoting a preferred place for a line break
...:
<span>Honey Nut Cheerios, <br class="rwd-break">Wheat Chex, etc.</span>
And one line of CSS in you media query:
@media screen and (min-width: 768px) {
.rwd-break { display: none; }
}
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“Java DateFormat is not threadsafe” what does this leads to?
...
The specifications of Format, NumberFormat, DateFormat, MessageFormat, etc. were not designed to be thread-safe. Also, the parse method calls on Calendar.clone() method and it affects calendar footprints so many threads parsing concurrently will change the cloning of the Calendar instance.
For ...
How to run Django's test database only in memory?
...do service mysql stop
$ sudo cp -pRL /var/lib/mysql /dev/shm/mysql
$ vim /etc/mysql/my.cnf
# datadir = /dev/shm/mysql
$ sudo service mysql start
Beware, it's just for testing, after reboot your database from memory is lost!
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Storing Images in DB - Yea or Nay?
...a database don't benefit from this optimization.
things like web servers, etc, need no special coding or processing to access images in the file system
databases win out where transactional integrity between the image and metadata are important.
it is more complex to manage integrity between db m...
UML class diagram enum
...own menu on the toolbar which selects among Datatype, Enumeration, Signal, etc that will allow you to create your own Enumerations. The compartment that normally contains Attributes can then be populated with EnumerationLiterals for the values of your enumeration.
Here's a picture of a slightly di...
How to JSON serialize sets?
...ed structures that include lists, sets, dicts, decimals, datetime objects, etc.:
from json import dumps, loads, JSONEncoder, JSONDecoder
import pickle
class PythonObjectEncoder(JSONEncoder):
def default(self, obj):
if isinstance(obj, (list, dict, str, unicode, int, float, bool, type(No...