大约有 43,000 项符合查询结果（耗时：0.0601秒） [XML]
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.
...
When should the xlsm or xlsb formats be used?
Since Excel 2007, Microsoft has split the classical .xls format to several formats (in particular, .xlsx , .xlsm , .xlsb ). I've got no problem to understand the use and purpose of .xlsx format but I am still wondering whether we should use a .xlsm or a .xlsb format when creating a file c...
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.
...
How to use DISTINCT and ORDER BY in same SELECT statement?
After executing the following statement:
12 Answers
12
...
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
...
How to write the Fibonacci Sequence?
I had originally coded the program wrongly. Instead of returning the Fibonacci numbers between a range (ie. startNumber 1, endNumber 20 should = only those numbers between 1 & 20), I have written for the program to display all Fibonacci numbers between a range (ie. startNumber 1, endNumber 20 displa...
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...
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
...
How to open a second activity on click of button in android app
I am learning to build android applications and I need some specific help. I can't seem to get my head around which bits of template code I am required to change, and which bits are static.
...