大约有 31,100 项符合查询结果（耗时：0.0561秒） [XML]
Proper indentation for Python multiline strings
...tation it states that it is faster than the textwrap equivalent one and in my tests in ipython it is indeed 3 times faster on average with my quick tests. It also has the benefit that it discards any leading blank lines this allows you to be flexible in how you construct the string:
"""
line 1 of...
std::unique_lock or std::lock_guard?
...en you need a wrapper for a limited scope, e.g.: a member function:
class MyClass{
std::mutex my_mutex;
void member_foo() {
std::lock_guard<mutex_type> lock(this->my_mutex);
/*
block of code which needs mutual exclusion (e.g. open the same
...
LINQ Join with Multiple Conditions in On Clause
...s joined by and, not one equality of some “weird” object. And to prove my point, your code is wrong. For it work, you would have to have true on the left side and t2.Complete on the right.
– svick
Oct 5 '11 at 17:01
...
What does enumerable mean?
...
If you create an object via myObj = {foo: 'bar'} or something thereabouts, all properties are enumerable. So the easier question to ask is, what's not enumerable? Certain objects have some non-enumerable properties, for example if you call Object.getOwn...
What is the attribute property=“og:title” inside meta tag?
... Is it still necessary to use og, because if I want to improve my google page rankings, I remember reading that page related information should be within first 200-250 characters of the page. If I include og:title, og:description and some other fields how will my page ranking get affecte...
How to find children of nodes using BeautifulSoup
...the DOCs that shows how to find/find_all direct children.
https://www.crummy.com/software/BeautifulSoup/bs4/doc/#the-recursive-argument
In your case as you want link1 which is first direct child:
# for only first direct child
soup.find("li", { "class" : "test" }).find("a", recursive=False)
If y...
T-SQL split string
...
I posted some improvements (with backing test cases) to my github page here. I will post it as an answer in this Stack Overflow thread when I have enough rep to exceed post "protection"
– mpag
Jun 16 '16 at 19:29
...
Can I have an onclick effect in CSS?
...t;/label>
Here I've positioned the label right after the input in my markup. This is so that I can use the adjacent sibling selector (the + key) to select only the label that immediately follows my #demo checkbox. Since the :checked pseudo-class applies to the checkbox, #demo:checked + labe...
How can I map True/False to 1/0 in a Pandas DataFrame?
... I've got a dataframe with a boolean column, and I can call df.my_column.mean() just fine (as you imply), but when I try: df.groupby("some_other_column").agg({"my_column":"mean"}) I get DataError: No numeric types to aggregate, so it appears they are NOT always the same. Just FYI.
...
What does 'var that = this;' mean in JavaScript?
...ned
// that is a reference to the element clicked on
});
});
My answer originally demonstrated this with jQuery, which is only very slightly different:
$('#element').click(function(){
// this is a reference to the element clicked on
var that = this;
$('.elements').each(f...