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Difference between os.getenv and os.environ.get
...s the right one.
– RayLuo
Apr 11 at 0:33
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Convert a RGB Color Value to a Hexadecimal String
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205
You can use
String hex = String.format("#%02x%02x%02x", r, g, b);
Use capital X's if you ...
Rails: How to get the model class name based on the controller class name?
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190
This will do it:
class HouseBuyersController < ApplicationController
def index
@model...
Determine whether an array contains a value [duplicate]
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1005
var contains = function(needle) {
// Per spec, the way to identify NaN is that it is not e...
Android: how to draw a border to a LinearLayout
...gt;
<corners
android:radius="2dp"
android:topRightRadius="0dp"
android:bottomRightRadius="0dp"
android:bottomLeftRadius="0dp" />
<stroke
android:width="1dp"
android:color="@android:color/white" />
</shape>
and define android:background="@dr...
How to convert integer timestamp to Python datetime
I have a data file containing timestamps like "1331856000000". Unfortunately, I don't have a lot of documentation for the format, so I'm not sure how the timestamp is formatted. I've tried Python's standard datetime.fromordinal() and datetime.fromtimestamp() and a few others, but nothing matches...
Dictionary vs Object - which is more efficient and why?
...__init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all[i] = Obj(i)
test_obj.py:
class Obj(object):
def __init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all[i] = Obj(i)
test_dict.py:
all = {}
for i in range(1000000):
o = {}...
The role of #ifdef and #ifndef
...d" while ifndef means "if the following is not defined".
So:
#define one 0
#ifdef one
printf("one is defined ");
#endif
#ifndef one
printf("one is not defined ");
#endif
is equivalent to:
printf("one is defined ");
since one is defined so the ifdef is true and the ifndef is false. It ...
Change text color based on brightness of the covered background area?
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+50
Interesting resources for this:
W3C - Ensure that foreground and background color combinations provide sufficient contrast
Calculati...
Can a dictionary be passed to django models on create?
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edited Oct 15 '09 at 21:15
answered Oct 15 '09 at 10:49
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