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Combining C++ and C - how does #ifdef __cplusplus work?
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It's about the ABI, in order to let both C and C++ application use C interfaces without any issue.
Since C language is very easy, code generation was stable for many years for different compilers, such as GCC, Borland C\C++, MSVC etc.
While C++ ...
How do I check if a type is a subtype OR the type of an object?
..., it's a bit awkward to read and write, and easy to mess up (reversing the order of potentialBase and potentialDescendant can be deadly).
– jrh
Dec 11 '17 at 13:40
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When should I use a table variable vs temporary table in sql server?
...T INTO @T
output inserted.* into #T
SELECT TOP 1000000 ROW_NUMBER() OVER (ORDER BY @@SPID), 0
FROM master..spt_values v1, master..spt_values v2
SET STATISTICS TIME ON
/*CPU time = 7016 ms, elapsed time = 7860 ms.*/
UPDATE @T SET Flag=1;
/*CPU time = 6234 ms, elapsed time = 7236 ms.*/
DELETE FR...
Override Java System.currentTimeMillis for testing time sensitive code
...be used as the first main class before your real main class very easily in order to run your application (or even whole appserver) in a different time. Of course, this is intented for testing purposes mainly, not for production environment.
EDIT July 2014: JMockit changed a lot lately and you are b...
Haskell: Lists, Arrays, Vectors, Sequences
...de has aliased as String. Char lists are convient, but tend to run on the order of 20 times slower than C strings, so feel free to use Data.Text or the very fast Data.ByteString. I'm sure there are other sequence oriented libraries I'm not thinking of right now.
Conclusion
90+% of the time I ne...
How to find the lowest common ancestor of two nodes in any binary tree?
...ew potential algorithms faster, yet I'm pretty sure it does not change the order of any existing algorithm. Hope this helps.
– Kevin Cathcart
Oct 7 '09 at 4:25
1
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Python: Checking if a 'Dictionary' is empty doesn't seem to work
..."Nobody is online, please use REGISTER command" \
" in order to register into the server")
else:
socket.send("ONLINE " + ' ' .join(self.users.keys()))
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improv...
Remove a symlink to a directory
...rk. Occasionally you need to run rm -rf folderName (without trailing /) in order to remove the symlink. Amazon Linux behaves this way under certain circumstances, for example.
– brandonscript
Oct 28 '13 at 20:05
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What is Cache-Control: private?
...eeds to send the resource to client? Maybe the resource never changed.
In order to resolve this problem, HTTP1.1 gives last-modifided head. The server gives the last modified date of the response to client. When the client need this resource, it will send If-Modified-Since head field to server. If...
What's the rationale for null terminated strings?
...o say to D compiler your source use utf-8 you have to put some stupid byte order mark at beginning. I write stupid because I know of not editor doing that, especially for UTF-8 that is supposed to be ASCII compatible).
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