大约有 45,000 项符合查询结果（耗时：0.1089秒） [XML]
TCP: can two different sockets share a port?
...Most kernels (incl. linux) doesn't allow you a second bind() to an already allocated port. It weren't a really big patch to make this allowed.
Conceptionally, we should differentiate between socket and port. Sockets are bidirectional communication endpoints, i.e. "things" where we can send and rece...
What is the difference between `sorted(list)` vs `list.sort()`?
... that you busted a myth too quickly. The fact remains that sorted() has to allocate a new list object and copy the references; the rest of the code paths are identical. See if you can run the same tests with larger lists. Compare it with just creating copies of lists and see if you can replicate the...
Parallel.ForEach vs Task.Factory.StartNew
... to complete. Shivprasad's approach focuses more on object creation/memory allocation than on computing itself. I made a research calling the following method:
public static double SumRootN(int root)
{
double result = 0;
for (int i = 1; i < 10000000; i++)
{
result += ...
Choose File Dialog [closed]
... that the .setFileEndsWith() doesn't work at all, because the file list is allocated in the constructor. You need to change the constructor to accept multiple input and then change the line: "boolean endsWith = fileEndsWith != null ? filename.toLowerCase().endsWith(fileEndsWith) : true;" to properly...
How can I view array structure in JavaScript with alert()?
...
pass your js array to the function below and it will do the same as php print_r() function
alert(print_r(your array)); //call it like this
function print_r(arr,level) {
var dumped_text = "";
if(!level) level = 0;
//The padding given at the beginning of the line.
var level_padding = "";
f...
INSERT with SELECT
...
Sure, what do you want to use for the gid? a static value, PHP var, ...
A static value of 1234 could be like:
INSERT INTO courses (name, location, gid)
SELECT name, location, 1234
FROM courses
WHERE cid = $cid
...
JavaScript single line 'if' statement - best syntax, this alternative? [closed]
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You could use this format, which is commonly used in PHP:
(lemon) ? document.write("foo gave me a bar") : document.write("if condition is FALSE");
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Why not use Double or Float to represent currency?
...y don't call for a lot of math, the operations consist of adding things or allocating amounts to different buckets. Introducing floating point and rounding just complicates things.
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How to run a background task in a servlet based web application?
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You can use cron4j. http://www.sauronsoftware.it/projects/cron4j/manual.php
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SQL command to display history of queries
... at the query cache: http://www.databasejournal.com/features/mysql/article.php/3110171/MySQLs-Query-Cache.htm but it might not give you access to the actual queries and will be very hit-and-miss if it did work (subtle pun intended)
But MySQL Query Browser very likely maintains its own list of queri...