大约有 45,000 项符合查询结果(耗时:0.0386秒) [XML]
How should I organize Python source code? [closed]
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Unfortunately the article is a dead link now :-(. The latest archived version is here: web.archive.org/web/20190714164001/http://…
– Igor Brejc
Apr 1 at 4:10
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Best way to test if a row exists in a MySQL table
...OM test WHERE text LIKE '%something%'
LIMIT 1) : 0.044898986816406s.
But now, with a BIGINT PK field, only one entry is equal to '321321' :
SELECT * FROM test2 WHERE id ='321321' LIMIT 1 with
mysql_num_rows() : 0.0089840888977051s.
SELECT count(*) as count FROM test2 WHERE id ='321321' : 0.0003...
What is C# analog of C++ std::pair?
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Tuple<> is now a better solution.
– dkantowitz
Aug 3 '12 at 7:06
6
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UICollectionView Set number of columns
I just started learning about UICollectionViews. I'm wondering if anyone knows how to specify the number of columns in a collectionview. The default is set to 3 (iPhone/portrait). I've looked at the documentation and can't seem to find a concise answer.
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List of lists changes reflected across sublists unexpectedly
...than a matrix = [row] * 2 where both rows are exactly the same object, and now changes to one row matrix[0][0] = y suddenly reflect in the other one (matrix[0][0] is matrix[1][0]) == True
– nadrimajstor
Jul 2 '17 at 15:44
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How to change collation of database, table, column?
The database is latin1_general_ci now and I want to change collation to utf8mb4_general_ci .
19 Answers
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Difference between private, public, and protected inheritance
...like to describe member's accessors first in my own words. If you already know this, skip to the heading "next:".
There are three accessors that I'm aware of: public, protected and private.
Let:
class Base {
public:
int publicMember;
protected:
int protectedMember;
pr...
How to call a stored procedure from Java and JPA
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JPA 2.1 now support Stored Procedure, read the Java doc here.
Example:
StoredProcedureQuery storedProcedure = em.createStoredProcedureQuery("sales_tax");
// set parameters
storedProcedure.registerStoredProcedureParameter("subtotal"...
What is a non-capturing group in regular expressions?
...tp://stackoverflow.com/
https://stackoverflow.com/questions/tagged/regex
Now, if I apply the regex below over it...
(https?|ftp)://([^/\r\n]+)(/[^\r\n]*)?
... I would get the following result:
Match "http://stackoverflow.com/"
Group 1: "http"
Group 2: "stackoverflow.com"
Group 3...
Sending HTTP POST Request In Java
...ter trying for a while to get my hands on PostMethod it seems its actually now called HttpPost as per stackoverflow.com/a/9242394/1338936 - just for anyone finding this answer like I did :)
– Martin Lyne
Oct 28 '12 at 20:43
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