大约有 11,400 项符合查询结果（耗时：0.0217秒） [XML]
In Python, what happens when you import inside of a function? [duplicate]
...o through the whole import process again. 1
Does it import once at the beginning whether or not the function is run?
No, it is only imported if and when the function is executed. 2, 3
As for the benefits: it depends, I guess. If you may only run a function very rarely and don't need the modul...
How to get hex color value rather than RGB value?
Using the following jQuery will get the RGB value of an element's background color:
19 Answers
...
FB OpenGraph og:image not pulling images (possibly https?)
First -- I do not believe this is a duplicate issue. I've searched for same or similar problems on SO extensively, and due to the nature of troubleshooting before asking, I believe this problem is unique.
...
How to access and test an internal (non-exports) function in a node.js module?
...ut on how to test internal (i.e. not exported) functions in nodejs (preferably with mocha or jasmine). And i have no idea!
...
How to make a new line or tab in XML (eclipse/android)?
... I have a very long text which I want to format somehow.
How can I put a tab before the first sentence of the text? Also, what is the code for new line? Thanks
...
What __init__ and self do on Python?
...
In this code:
class A(object):
def __init__(self):
self.x = 'Hello'
def method_a(self, foo):
print self.x + ' ' + foo
... the self variable represents the instance of the object itself. Most object-oriented languages pas...
MySQL pagination without double-querying?
I was wondering if there was a way to get the number of results from a MySQL query, and at the same time limit the results.
...
Go: panic: runtime error: invalid memory address or nil pointer dereference
...ording to the docs for func (*Client) Do:
"An error is returned if caused by client policy (such as CheckRedirect), or if there was an HTTP protocol error. A non-2xx response doesn't cause an error.
When err is nil, resp always contains a non-nil resp.Body."
Then looking at this code:
res, err := ...
Detect if a page has a vertical scrollbar?
...if the current page/window (not a particular element) has a vertical scrollbar.
13 Answers
...
Why are there no ++ and -- operators in Python?
...
It's not because it doesn't make sense; it makes perfect sense to define "x++" as "x += 1, evaluating to the previous binding of x".
If you want to know the original reason, you'll have to either wade through old Python mailing lists...