大约有 36,010 项符合查询结果（耗时：0.0674秒） [XML]
Select top 10 records for each category
...top 10 records from each section in one query. Can anyone help with how to do it? Section is one of the columns in the table.
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Unit Testing: DateTime.Now
...ts that expects the 'current time' to be different than DateTime.Now and I don't want to change the computer's time, obviously.
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What are five things you hate about your favorite language? [closed]
...ut there may be multiple variables on that line, and the exception message doesn't tell me which one is null.
– Zarkonnen
Oct 24 '09 at 10:09
10
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Is it possible for a computer to “learn” a regular expression by user-provided examples?
...ples (text -> desired extractions).
This is a working online tool which does the job: http://regex.inginf.units.it/
Regex Generator++ online tool generates a regex from provided examples using a GP search algorithm.
The GP algorithm is driven by a multiobjective fitness which leads to higher pe...
Get the full URL in PHP
...link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
(Note that the double quoted string syntax is perfectly correct)
If you want to support both HTTP and HTTPS, you can use
$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTT...
Use grep --exclude/--include syntax to not grep through certain files
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I don't know why, but I had to quote the include pattern like this: grep pattern -r --include="*.{cpp,h}" rootdir
– topek
Dec 9 '11 at 7:41
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Android: Remove all the previous activities from the back stack
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Guys, read the documentation of FLAG_ACTIVITY_CLEAR_TASK.This is the official way to got. No need to change all the activities in the app.
– AlikElzin-kilaka
Feb 13 '15 at 1:50
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What's the difference between VARCHAR and CHAR?
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@Marco Demaio do you know the reason behind this?
– Dehan de Croos
Aug 9 '17 at 9:38
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Difference between Visual Basic 6.0 and VBA
...on of the host application in VBA. Application-global objects (like "ActiveDocument") and events are available without declaration, so application-specific programming is straight-forward.
Still, nothing keeps you from firing up Word, loading the VBA IDE and solving a problem that has no relation t...
How large should my recv buffer be when calling recv in the socket library
...- within TCP/IP, the former corresponds to TCP and the latter to UDP.
How do you know how big to make the buffer passed to recv()?
SOCK_STREAM: It doesn't really matter too much. If your protocol is a transactional / interactive one just pick a size that can hold the largest individual message /...