大约有 30,000 项符合查询结果（耗时：0.0409秒） [XML]
How is CountDownLatch used in Java Multithreading?
...tDownLatch.
Any thread, usually the main thread of the application, which calls CountDownLatch.await() will wait until count reaches zero or it's interrupted by another thread. All other threads are required to count down by calling CountDownLatch.countDown() once they are completed or ready.
As ...
Using current time in UTC as default value in PostgreSQL
...rentheses around the default expression:
create temporary table test(
id int,
ts timestamp without time zone default (now() at time zone 'utc')
);
share
|
improve this answer
|
...
How does this giant regex work?
I recently found the code below in one of my directories, in a file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories.
...
Using jquery to get all checked checkboxes with a certain class name
...a single form or div or table, but you can always select all checkboxes inside a specific element. For example:
<ul id="selective">
<li><input type="checkbox" value="..." /></li>
<li><input type="checkbox" value="..." /></li>
<li><input type="ch...
Where can I learn how to write C code to speed up slow R functions? [closed]
...
See Edit 3 and yes, you can. Meyers calls C++ a 'four paradigm' language and you do not have to use all four. Using it as 'just a better C' and use Rcpp as glue to R is perfectly fine. Nobody forces a style on you -- this ain't Java ;-)
–...
How to avoid “if” chains?
...tep<X>() should evaluate only if the previous one succeeded (this is called short circuit evaluation)
executeThisFunctionInAnyCase() will be executed in any case
share
|
improve this answer
...
Replace console output in Python
...stdout.write("#" * (40 - progress_x) + "]\n")
sys.stdout.flush()
You call startProgress passing the description of the operation, then progress(x) where x is the percentage and finally endProgress()
share
|
...
How to scp in Python?
...(server, port, user, password)
scp = SCPClient(ssh.get_transport())
Then call scp.get() or scp.put() to do SCP operations.
(SCPClient code)
share
|
improve this answer
|
f...
How do I return clean JSON from a WCF Service?
...s and it just works.
Also check out IIRF or another URL rewriter to get rid of the .svc in the URI.
share
|
improve this answer
|
follow
|
...
Cannot drop database because it is currently in use
...rchar(max)
SELECT @SQL = COALESCE(@SQL,'') + 'Kill ' + Convert(varchar, SPId) + ';'
FROM MASTER..SysProcesses
WHERE DBId = DB_ID(@DatabaseName) AND SPId <> @@SPId
--SELECT @SQL
EXEC(@SQL)
share
|
...