大约有 33,000 项符合查询结果（耗时：0.0402秒） [XML]
Cycles in family tree software
...some family tree software (written in C++ and Qt). I had no problems until one of my customers mailed me a bug report. The problem is that the customer has two children with their own daughter, and, as a result, he can't use my software because of errors.
...
How to initialize List object in Java?
...them, I.E: to know which fits better your needs.
The 3 most commonly used ones probably are:
List<String> supplierNames1 = new ArrayList<String>();
List<String> supplierNames2 = new LinkedList<String>();
List<String> supplierNames3 = new Vector<String>();
...
How should one go about choosing a default TCP/IP port for a new service?
When developing an app that will listen on a TCP/IP port, how should one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired.
...
How to use double or single brackets, parentheses, curly braces
...t, double square brackets seem to evaluate quite a lot quicker than single ones.
$ time for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s...
AngularJS best practices for module declaration?
...ed to its variable you can access modules via angular.module('mymod'):
// one file
// NOTE: the immediately invoked function expression
// is used to exemplify different files and is not required
(function(){
// declaring the module in one file / anonymous function
// (only pass a second par...
Lock, mutex, semaphore… what's the difference?
...
A lock allows only one thread to enter the part that's locked and the lock is not shared with any other processes.
A mutex is the same as a lock but it can be system wide (shared by multiple processes).
A semaphore does the same as a mutex bu...
Scala: write string to file in one statement
...
A concise one line:
import java.io.PrintWriter
new PrintWriter("filename") { write("file contents"); close }
share
|
improve this a...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...tination port" header field.
Now, there are two answers to your question, one for stateful protocols and one for stateless protocols.
For a stateless protocol (ie UDP), there is no problem because "connections" don't exist - multiple people can send packets to the same port, and their packets will...
Adding one day to a date
My code to add one day to a date returns a date before day adding:
2009-09-30 20:24:00 date after adding one day SHOULD be rolled over to the next month: 1970-01-01 17:33:29
...
Putting an if-elif-else statement on one line?
...itional operator? (the question is about condensing if-else statement to one line)
11 Answers
...