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Structs versus classes
...nowledge at that point, but they're limits I'd love to stretch. In the meantime "it can be faster both ways, here's why, now test and find out which applies in this case" is useful to be able to say :)
– Jon Hanna
Oct 15 '10 at 15:03
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When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
...rmance gain and scalability.
NoSQL databases have been around for a long time - just the term is new. Some examples are graph, object, column, XML and document databases.
For your 2nd question: Is it okay to use both on the same site?
Why not? Both serves different purposes right?
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Does “display:none” prevent an image from loading?
...g post:
Chrome and Safari (WebKit): WebKit downloads the file every time except when a background is applied through a non-matching
media-query.
Firefox: Firefox won't download the image called with background image if the styles are hidden but they will still download assets
from img t...
Is there any algorithm in c# to singularize - pluralize a word?
...oultramicroscopicsilicovolcanoconiosis', which I find myself using all the time in my entity models... 8o)
– MrKWatkins
Jan 19 '12 at 17:41
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Showing the stack trace from a running Python application
I have this Python application that gets stuck from time to time and I can't find out where.
28 Answers
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Convert UTC/GMT time to local time
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For strings such as 2012-09-19 01:27:30.000, DateTime.Parse cannot tell what time zone the date and time are from.
DateTime has a Kind property, which can have one of three time zone options:
Unspecified
Local
Utc
NOTE If you are wishing to represent a date/time other ...
Shared-memory objects in multiprocessing
...haredNumpyMemManager.getInstance()
if __name__ == '__main__':
import timeit
N_PROC = 8
INNER_LOOP = 10000
N = 1000
def propagate(t):
i, shm_hdl, evidence = t
a = SharedNumpyMemManager.getArray(shm_hdl)
for j in range(INNER_LOOP):
a[i] = i
...
Execute code when Django starts ONCE only?
...k for this
Don't do it this way.
You don't want "middleware" for a one-time startup thing.
You want to execute code in the top-level urls.py. That module is imported and executed once.
urls.py
from django.confs.urls.defaults import *
from my_app import one_time_startup
urlpatterns = ...
on...
'is' versus try cast with null check
...#1
{
var myObjRef = (MyType)myObj.myProp; // needs to be cast a second time
// before using it as a MyType
...
}
to this:
var myObjRef = myObj.myProp as MyType; // only one cast
if (myObjRef != null)
{
// myObjRef is already MyType and doesn't ...
Android device chooser - My device seems offline
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I've seen this happen a few times on my HTC Desire. I've never figured out whether the problem is in adb or the device but I usually do the following:
Restart adb by issuing 'adb kill-server' followed by 'adb start-server' at a cmd prompt
Disable and ...