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How to use the 'sweep' function
When I look at the source of R Packages, i see the function sweep used quite often.
Sometimes it's used when a simpler function would have sufficed (e.g., apply ),
other times, it's impossible to know exactly what it's is doing without
spending a fair amount of time to step through the code block...
Is R's apply family more than syntactic sugar?
...system elapsed
# 2.179 0.126 3.301
If you plan to save the result then apply family functions can be much more than syntactic sugar.
(the simple unlist of z is only 0.2s so the lapply is much faster. Initializing the z in the for loop is quite fast because I'm giving the average of the l...
Dynamic Sorting within SQL Stored Procedures
...:
order by
case when @SortExpr = 'CustomerName' and @SortDir = 'ASC'
then CustomerName end asc,
case when @SortExpr = 'CustomerName' and @SortDir = 'DESC'
then CustomerName end desc,
...
This, to me, is still much better than building dynamic SQL from code, which turns into a scalabili...
$.getJSON returning cached data in IE8
I'm playing around with ASP.net MVC and JQuery at the moment. I've come across behavour which doesn't seem to make sense.
...
Convert Bitmap to File
... Why use a ByteArrayOutputStream, get a byte array from that, then write the array to a FileOutputStream? Why not just the FileOutputStream in Bitmap.compress?
– InsanityOnABun
Sep 12 '17 at 3:34
...
Fixing the order of facets in ggplot
...:
temp$size_f = factor(temp$size, levels=c('50%','100%','150%','200%'))
Then change the facet_grid(.~size) to facet_grid(.~size_f)
Then plot:
The graphs are now in the correct order.
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i...
JavaScript, Node.js: is Array.forEach asynchronous?
... setTimeout(arguments.callee, 25);
}
}, 25);
}
and then call it with:
processArray([many many elements], function () {lots of work to do});
This would be non-blocking then. The example is taken from High Performance JavaScript.
Another option might be web workers.
...
TransformXml task could not be loaded from Microsoft.Web.Publishing.Tasks.dll
...y v10.0 folder and renamed it to v11.0, and things seems to work well from then on. That's the quick fix for now.
As this is probably not the best solution, and although it works, I was going to try installing the Microsoft Windows SDK for Windows 7 and .NET Framework 4 Windows SDK for Windows 7 ...
CustomErrors mode=“Off”
... a <system.web> node several lines above (before a compilation and authentication node), and a closing tag </system.web> a few lines below that. Once I corrected this, OK, problem solved. What I should have done is copy/pasted only this line:
<customErrors mode="Off"/>
This is...
Visual Studio opens the default browser instead of Internet Explorer
...This has caused some to uninstall it because, to them, its more bothersome then the problem it fixes. Regardless it is easily updated through the extension manager and I still find it very useful.
You will see the following error when starting VS:
The Default Browser Switcher beta bits have exp...