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MongoDB vs. Cassandra [closed]
...han you would in your present database. This would be the most significant win for Mongo.
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How to use QueryPerformanceCounter?
...bly my safest bet. (The warning on Boost::Posix that it may not works on Win32 API put me off a bit). However, I'm not really sure how to implement it.
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What is a race condition?
... thread changed x in between the check and act. You have no real way of knowing.
In order to prevent race conditions from occurring, you would typically put a lock around the shared data to ensure only one thread can access the data at a time. This would mean something like this:
// Obtain lock fo...
Surrogate vs. natural/business keys [closed]
...JECT'
and k.task_code = 'BUILD';
Unless anyone seriously thinks the following is a good idea?:
select sum(t.hours)
from timesheets t
where t.dept_id = 34394
and t.status_id = 89
and t.project_id = 1253
and t.task_id = 77;
"But" someone will say, "what happens when the code for MYPROJECT or ...
how to install gcc on windows 7 machine?
I have MinGW on my windows 7 machine. I wish to install and use complete gcc for C compiler. I found there is no single pre-compiled ready-made installation file for this purpose. I checked the following page : http://gcc.gnu.org/install/
It is difficult and I find it above my level of understandi...
Share Large, Read-Only Numpy Array Between Multiprocessing Processes
...n processes:
p.join()
if __name__ == "__main__":
main()
On Windows -- which does not support fork() -- multiprocessing is using the win32 API call CreateProcess. It creates an entirely new process from any given executable. That's why on Windows one is required to pickle data to the ...
Copy file remotely with PowerShell
...
From PowerShell version 5 onwards (included in Windows Server 2016, downloadable as part of WMF 5 for earlier versions), this is possible with remoting. The benefit of this is that it works even if, for whatever reason, you can't access shares.
For this to work, the local...
MySQL: Transactions vs Locking Tables
...heir transactions (take out the $20 you're paying, and the $30 they're screwing you over with), and now both code paths have two different balances: $80 and $70. Depending on which ones finishes last, you'll end up with either of those two balances in your account, instead of the $50 you should have...
Should Jquery code go in header or footer?
...
Oh well, can't win them all! I'm of the belief that I understand its implications. :)
– EMP
Jan 21 '10 at 3:45
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How does the ThreadStatic attribute work?
...ilers that emit to IL like VB.NET and C# don't need to know anything about Win32 TLS in order to emit IL code that can read and write a variable that has the ThreadStatic attribute. There's nothing special about the variable as far as C# knows - it's just a location to read and write stuff. The fa...