大约有 41,000 项符合查询结果(耗时:0.0539秒) [XML]
What is the syntax for “not equal” in SQLite?
I want to return the cursor that points anything that are NOT onSale, what should I change? Thanks!
3 Answers
...
Load and execution sequence of a web page?
...ts, but I don't think too much about the load and execution sequence of an ordinary web page. But now I need to know detail. It's hard to find answers from Google or SO, so I created this question.
...
Dynamically set local variable [duplicate]
...swers already posted you cannot modify locals() directly and expect it to work.
>>> def foo():
lcl = locals()
lcl['xyz'] = 42
print(xyz)
>>> foo()
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
foo()
File "<pyshell#...
Differences between hard real-time, soft real-time, and firm real-time?
I have read the definitions for the different notions of real-time , and the examples provided for hard and soft real-time systems make sense to me. But, there is no real explanation or example of a firm real-time system. According to the link above:
...
Circular list iterator in Python
...
Use itertools.cycle, that's its exact purpose:
from itertools import cycle
lst = ['a', 'b', 'c']
pool = cycle(lst)
for item in pool:
print item,
Output:
a b c a b c ...
(Loops forever, obviously)
In order to manually advance the iterator and pull values from it one by one, s...
PHP: Storing 'objects' inside the $_SESSION
I just figured out that I can actually store objects in the $_SESSION and I find it quite cool because when I jump to another page I still have my object. Now before I start using this approach I would like to find out if it is really such a good idea or if there are potential pitfalls involved....
Should a RESTful 'PUT' operation return something
...that are applicable. Here is my interpretation:
HTTP status code 200 OK for a successful PUT of an update to an
existing resource. No response body needed. (Per Section 9.6, 204 No Content is even more appropriate.)
HTTP status code 201 Created for a successful PUT of a new
resource, with the most...
Best Practice for Forcing Garbage Collection in C#
...y experience it seems that most people will tell you that it is unwise to force a garbage collection but in some cases where you are working with large objects that don't always get collected in the 0 generation but where memory is an issue, is it ok to force the collect? Is there a best practice o...
Vim: Move window left/right?
In Vim, is it possible to “move” a window to the left or right? Eg, similar to <c-w> r or <c-w> x , but left/right instead of up/down?
...
Is explicitly closing files important?
In Python, if you either open a file without calling close() , or close the file but not using try - finally or the " with " statement, is this a problem? Or does it suffice as a coding practice to rely on the Python garbage-collection to close all files? For example, if one does this:
...
