大约有 43,000 项符合查询结果（耗时：0.0599秒） [XML]
Non greedy (reluctant) regex matching in sed?
I'm trying to use sed to clean up lines of URLs to extract just the domain.
22 Answers
...
Why do most fields (class members) in Android tutorial start with `m`?
... it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
...
Best way to define error codes/strings in Java?
I am writing a web service in Java, and I am trying to figure out the best way to define error codes and their associated error strings . I need to have a numerical error code and an error string grouped together. Both the error code and error string will be sent to the client accessing the web ser...
Can I squash commits in Mercurial?
I have a pair of commits that should really be just one. If I was using git, I would use:
8 Answers
...
Why is “using namespace std;” considered bad practice?
I've been told by others that writing using namespace std; in code is wrong, and that I should use std::cout and std::cin directly instead.
...
Is it possible to search for a particular filename on GitHub?
I know that the GitHub web interface lets you search all repositories for files with a particular pathname (e.g. searching for path:/app/models/user.rb yields >109k results), but is there a way to search all repositories for filenames independent of their subdirectory location? I tried using as...
How many threads is too many?
I am writing a server, and I send each action of into a separate thread when the request is received. I do this because almost every request makes a database query. I am using a threadpool library to cut down on construction/destruction of threads.
...
What is the difference between Collection and List in Java?
What is the difference between Collection and List in Java? When should I use which?
7 Answers
...
What is a good pattern for using a Global Mutex in C#?
...want to make sure this is out there, because it's so hard to get right:
using System.Runtime.InteropServices; //GuidAttribute
using System.Reflection; //Assembly
using System.Threading; //Mutex
using System.Security.AccessControl; //MutexAccessRule
using System.S...
Java 256-bit AES Password-Based Encryption
... to implement 256 bit AES encryption, but all the examples I have found online use a "KeyGenerator" to generate a 256 bit key, but I would like to use my own passkey. How can I create my own key? I have tried padding it out to 256 bits, but then I get an error saying that the key is too long. I do h...