大约有 44,500 项符合查询结果（耗时：0.0395秒） [XML]
How to “inverse match” with regex?
...
72
(?!Andrea).{6}
Assuming your regexp engine supports negative lookaheads..
Edit: ..or maybe yo...
Python: changing value in a tuple
...t you need to ask, why you want to do this?
But it's possible via:
t = ('275', '54000', '0.0', '5000.0', '0.0')
lst = list(t)
lst[0] = '300'
t = tuple(lst)
But if you're going to need to change things, you probably are better off keeping it as a list
...
python list by value not by reference [duplicate]
...
220
As answered in the official Python FAQ:
b = a[:]
...
Quicksort: Choosing the pivot
... a random pivot minimizes the chance that you will encounter worst-case O(n2) performance (always choosing first or last would cause worst-case performance for nearly-sorted or nearly-reverse-sorted data). Choosing the middle element would also be acceptable in the majority of cases.
Also, if you ...
Set every cell in matrix to 0 if that row or column contains a 0
...
1
2
Next
96
...
Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...nity cost). If all that stuff was added, the next standard C++ would be C++215x and would probably be fully implemented by compiler developers three hundred years after that.
Anyway, that's my (rather voluminous) thoughts on the matter. If only votes were handed out bases on quantity rather than qu...
How do I round to the nearest 0.5?
...
208
Multiply your rating by 2, then round using Math.Round(rating, MidpointRounding.AwayFromZero),...
Bind a function to Twitter Bootstrap Modal Close
...Bootstrap 4: getbootstrap.com/docs/4.1/components/modal/#events
Bootstrap 2.3.2
$('#myModal').on('hidden', function () {
// do something…
});
See getbootstrap.com/2.3.2/javascript.html#modals → Events
share
...
Equation (expression) parser with precedence?
...
22 Answers
22
Active
...
Saving an Object (Data persistence)
...40)
pickle.dump(company1, output, pickle.HIGHEST_PROTOCOL)
company2 = Company('spam', 42)
pickle.dump(company2, output, pickle.HIGHEST_PROTOCOL)
del company1
del company2
with open('company_data.pkl', 'rb') as input:
company1 = pickle.load(input)
print(company1.name) # -> ...