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R and version control for the solo data analyst
...dopt using a revision control system, you'll think of your work as writing down your legacy in the repository, and making brilliant incremental changes to it. It feels way better.
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How to get the ThreadPoolExecutor to increase threads to max before queueing?
...his after the put() to stop race conditions
if (executor.isShutdown()) {
throw new RejectedExecutionException(
"Task " + r + " rejected from " + e);
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt()...
Set focus on TextBox in WPF from view model
...his is another question to post on Stackoverflow :).
The best way to track down issues with Focus is... debugging .Net source code. No kidding. It saved me a lot of time many times. To enable .net source code debugging refer to Shawn Bruke's blog.
Finally, general approach that I use to set focus fr...
Why is string concatenation faster than array join?
... case the VM has to do nearly no work. The only problem is that this slows down other operations on the resulting string a little bit. Also this of course reduces memory overhead.
On the other hand ['abc', 'def'].join('') would usually just allocate memory to lay out the new string flat in memory....
Generating a unique machine id
...ual, have type Ethernet and are hard to identify as virtual. Others are Up/Down depending on network conditions (wifi)
– Marek
Sep 19 '12 at 11:06
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Should C# methods that *can* be static be static? [closed]
...ethods, etc. Making methods static is a way to keep the degree of coupling down, since you can be sure a static method does not reference any members.
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SQL Server: Database stuck in “Restoring” state
...
Worked perfectly - without needing to tear it down and up again. 3 Dbs of 80+ Gb each takes a while ! Thanks!
– Christer
Jan 24 '17 at 12:37
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What is a callback function?
... has been "called back", in the same way something that's gone through shutdown has been shut down and something that's used to log in is a login.
– Anonymous
May 5 '09 at 10:43
22...
Is recursion ever faster than looping?
...have mutable state as you introduced in your 2nd step, so everything slows down; while an immutable solution like a functional/recursive one would avoid locking, so could be faster/more parallel).
– hmijail mourns resignees
Aug 27 '17 at 17:24
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Why are elementwise additions much faster in separate loops than in a combined loop?
... 2:
Here, as the data sizes increase, the amount of relative overhead goes down and the performance "saturates". Here two loops is slower because it has twice as much loop and branching overhead.
I'm not sure exactly what's going on here... Alignment could still play an effect as Agner Fog mentions ...