大约有 44,000 项符合查询结果(耗时:0.0930秒) [XML]

https://stackoverflow.com/ques... 

Grant execute permission for a user on all stored procedures in database?

I generated script from old database, created a new database and imported all data from old database. So far so good, however, no user has execute rights for stored procedures. I know I can use ...
https://stackoverflow.com/ques... 

SQL - HAVING vs. WHERE

...nce HAVING works correctly. As a rule of thumb, use WHERE before GROUP BY and HAVING after GROUP BY. It is a rather primitive rule, but it is useful in more than 90% of the cases. While you're at it, you may want to re-write your query using ANSI version of the join: SELECT L.LectID, Fname, Lnam...
https://stackoverflow.com/ques... 

What's the role of adapters in Android?

I want to know when , where and how adapters are used in the context of Android. 10 Answers ...
https://stackoverflow.com/ques... 

Check if a number is int or float

... isinstance(False, (int, float)) = True), I needed not isinstance(n, bool) and isinstance(n, (int, float)) instead – YTZ Jun 7 at 16:53 add a comment  |  ...
https://stackoverflow.com/ques... 

Why do I need 'b' to encode a string with Base64?

... base64 encoding takes 8-bit binary byte data and encodes it uses only the characters A-Z, a-z, 0-9, +, /* so it can be transmitted over channels that do not preserve all 8-bits of data, such as email. Hence, it wants a string of 8-bit bytes. You create those in Python ...
https://stackoverflow.com/ques... 

Is there a way for multiple processes to share a listening socket?

In socket programming, you create a listening socket and then for each client that connects, you get a normal stream socket that you can use to handle the client's request. The OS manages the queue of incoming connections behind the scenes. ...
https://stackoverflow.com/ques... 

How to find files that match a wildcard string in Java?

... Try FileUtils from Apache commons-io (listFiles and iterateFiles methods): File dir = new File("."); FileFilter fileFilter = new WildcardFileFilter("sample*.java"); File[] files = dir.listFiles(fileFilter); for (int i = 0; i < files.length; i++) { System.out.println...
https://stackoverflow.com/ques... 

Repairing Postgresql after upgrading to OSX 10.7 Lion

...ked when trying to connect to the psql server. When I do it from the command line using 15 Answers ...
https://stackoverflow.com/ques... 

C++, What does the colon after a constructor mean? [duplicate]

...e the body of the constructor executes. For case #1, I assume you understand inheritance (if that's not the case, let me know in the comments). So you are simply calling the constructor of your base class. For case #2, the question may be asked: "Why not just initialise it in the body of the cons...
https://stackoverflow.com/ques... 

Why does C# not provide the C++ style 'friend' keyword? [closed]

... Having friends in programming is more-or-less considered "dirty" and easy to abuse. It breaks the relationships between classes and undermines some fundamental attributes of an OO language. That being said, it is a nice feature and I've used it plenty of times myself in C++; and would lik...