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What exactly are iterator, iterable, and iteration?
What is the most basic definition of "iterable", "iterator" and "iteration" in Python?
13 Answers
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How do I do an OR filter in a Django query?
...o list the items that either a user has added (they are listed as the creator) or the item has been approved.
6 Answers
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How do I use a Boolean in Python?
...some_decision:
checker = True
if checker:
# some stuff
[Edit]
For more information: http://docs.python.org/library/functions.html#bool
Your code works too, since 1 is converted to True when necessary.
Actually Python didn't have a boolean type for a long time (as in old C), and some pro...
Logical operator in a handlebars.js {{#if}} conditional
Is there a way in handlebars JS to incorporate logical operators into the standard handlebars.js conditional operator? Something like this:
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When to use window.opener / window.parent / window.top
...s called
window.parent refers to the parent of a window in a <frame> or <iframe>
window.top refers to the top-most window from a window nested in one or more layers of <iframe> sub-windows
Those will be null (or maybe undefined) when they're not relevant to the referring window's...
What is the meaning of prepended double colon “::”?
...obal namespace, instead of starting at the namespace you're currently in. For instance, if you had two different classes called Configuration as such:
class Configuration; // class 1, in global namespace
namespace MyApp
{
class Configuration; // class 2, different from class 1
function blah...
ETag vs Header Expires
...n able to figure out if I should use both an ETag and an Expires Header or one or the other.
8 Answers
...
Set every cell in matrix to 0 if that row or column contains a 0
...the beginning depend on squares in the end. Maybe my 2nd pass can be made more efficient...
import pprint
m = [[1, 0, 1, 1, 0],
[0, 1, 1, 1, 0],
[1, 1, 1, 1, 1],
[1, 0, 1, 1, 1],
[1, 1, 1, 1, 1]]
N = len(m)
### pass 1
# 1 rst line/column
c = 1
for i in range(N):
c &...
Is short-circuiting logical operators mandated? And evaluation order?
Does the ANSI standard mandate the logical operators to be short-circuited, in either C or C++?
7 Answers
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What is the meaning and difference between subject, user and principal?
In the context of security frameworks, a few terms commonly occur subject , user and principal , of which I have not been able to find a clear definition and the difference between them.
...