大约有 19,000 项符合查询结果（耗时：0.0235秒） [XML]
How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
...
What is the best way to test for an empty string in Go?
...
Active
Oldest
Votes
...
What are some alternatives to ReSharper? [closed]
I'm considering purchasing a ReSharper license, but are there any possible alternatives to ReSharper and how would you rate these compared to ReSharper?
...
When should we use Observer and Observable?
...
Active
Oldest
Votes
...
How do I find a default constraint using INFORMATION_SCHEMA?
I'm trying to test if a given default constraint exists. I don't want to use the sysobjects table, but the more standard INFORMATION_SCHEMA.
...
Remove duplicate dict in list in Python
I have a list of dicts, and I'd like to remove the dicts with identical key and value pairs.
12 Answers
...
Does Java have a HashMap with reverse lookup?
I have data that is organized in kind of a "key-key" format, rather than "key-value". It's like a HashMap, but I will need O(1) lookup in both directions. Is there a name for this type of data structure, and is anything like this included in Java's standard libraries? (or maybe Apache Commons?)
...
Red black tree over avl tree
AVL and Red black trees are both self-balancing except Red and black color in the nodes. What's the main reason for choosing Red black trees instead of AVL trees? What are the applications of Red black trees?
...
How do I use valgrind to find memory leaks?
How do I use valgrind to find the memory leaks in a program?
4 Answers
4
...
Where does Oracle SQL Developer store connections?
I have an application that I can't get connected to my Oracle Database 11g Express Edition. I created a test database in this edition, and I can connect to the database fine using Oracle SQL Developer, create tables, views etc. However, I'm having a hard time getting connected via my application. Wh...