大约有 46,000 项符合查询结果（耗时：0.0909秒） [XML]
Changing default encoding of Python?
...ow.
In python 2 which was not as strongly typed regarding the encoding of strings you could perform operations on differently encoded strings, and succeed. E.g. the following would return True.
u'Toshio' == 'Toshio'
That would hold for every (normal, unprefixed) string that was encoded in sys.ge...
How to match “anything up until this sequence of characters” in a regular expression?
...n: /^[^abc]/ . This will match any single character at the beginning of a string, except a, b, or c.
12 Answers
...
How to clear a notification in Android
...
I don't know why this isn't upvoted more and selected as the answer. This was the solution I was looking for. Thanks!
– loeschg
Jan 29 '13 at 23:48
...
What is the syntax for an inner join in LINQ to SQL?
I'm writing a LINQ to SQL statement, and I'm after the standard syntax for a normal inner join with an ON clause in C#.
1...
Create tap-able “links” in the NSAttributedString of a UILabel?
...st one is easy. Starting from iOS 6 UILabel supports display of attributed strings. All you need to do is to create and configure an instance of NSMutableAttributedString:
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@"String with a link" attribute...
Pandas get topmost n records within each group
Suppose I have pandas DataFrame like this:
3 Answers
3
...
Mapping composite keys using EF code first
... in your code:
public class MyTable
{
[Key, Column(Order = 0)]
public string SomeId { get; set; }
[Key, Column(Order = 1)]
public int OtherId { get; set; }
}
You can also look at this SO question. If you want official documentation, I would recommend looking at the official EF website. H...
How to ALTER multiple columns at once in SQL Server
...e., so, whats the big deal, just use multiple ALTER TABLE ALTER COLUMN commands?
– KM.
Aug 12 '10 at 12:56
7
...
What is the difference between a stored procedure and a view?
...A view represents a virtual table. You can join multiple tables in a view and use the view to present the data as if the data were coming from a single table.
A stored procedure uses parameters to do a function... whether it is updating and inserting data, or returning single values or data sets.
...
Foreign key constraint may cause cycles or multiple cascade paths?
...
SQL Server does simple counting of cascade paths and, rather than trying to work out whether any cycles actually exist, it assumes the worst and refuses to create the referential actions (CASCADE): you can and should still create the constraints without the referential acti...