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Speed up the loop operation in R
... names.
So how better is it?
I run each function for data.frame with nrow from 1,000 to 10,000 by 1,000 and measure time with system.time
X <- as.data.frame(matrix(sample(1:10, n*9, TRUE), n, 9))
system.time(dayloop2(X))
Result is
You can see that your version depends exponentially from nr...
Casting a variable using a Type variable
...each one.
private static Func<object, object> MakeCastDelegate(Type from, Type to)
{
var p = Expression.Parameter(typeof(object)); //do not inline
return Expression.Lambda<Func<object, object>>(
Expression.Convert(Expression.ConvertChecked(Expression.Convert(p, fro...
How can I group data with an Angular filter?
...ild this repository
via Bower: by running $ bower install angular-filter from your terminal
via npm: by running $ npm install angular-filter from your terminal
via cdnjs http://www.cdnjs.com/libraries/angular-filter
(2) Include angular-filter.js (or angular-filter.min.js) in your index...
Remove 'a' from legend when using aesthetics and geom_text
How can I can remove the letter 'a' from the legend generated by this code? If I remove the geom_text , then the 'a' letter will not show in the legend. I want to keep geom_text , though.
...
Load image from resources area of project in C#
...d the image using the Properties/Resources UI, you get access to the image from generated code, so you can simply do this:
var bmp = new Bitmap(WindowsFormsApplication1.Properties.Resources.myimage);
share
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How can I remove all my changes in my SVN working directory?
...e any way for me to remove all my changes in there and just get everything from the trunk using the command line?
10 Answer...
How do I get the path of the assembly the code is in?
...etimes gives you some funny results when using NUnit (where assemblies run from a temporary folder), so I prefer to use CodeBase which gives you the path in URI format, then UriBuild.UnescapeDataString removes the File:// at the beginning, and GetDirectoryName changes it to the normal windows format...
Why does SIGPIPE exist?
From my understanding, SIGPIPE can only occur as the result of a write() , which can (and does) return -1 and set errno to EPIPE ... So why do we have the extra overhead of a signal? Every time I work with pipes I ignore SIGPIPE and have never felt any pain as a result, am I missing somethin...
Why do most C developers use define instead of const? [duplicate]
...
+1 for correct answer among a sea of wrong ones from C++ coders who don't know C.
– R.. GitHub STOP HELPING ICE
Oct 26 '10 at 13:59
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Why doesn't java.util.Set have get(int index)?
...ions which use Object-Relational Mapping (for example with Hibernate); and from all the people who replied here, Andreas Petersson is the only one who understood the real issue and offered the correct answer to it: Java is missing a UniqueList! (or you can also call it OrderedSet, or IndexedSet).
M...