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Where can I learn how to write C code to speed up slow R functions? [closed]
...cpp defines.
So a .Call function gets declared like this in some header file:
#include <Rcpp.h>
RcppExport SEXP foo( SEXP x1, SEXP x2 ) ;
and implemented like this in a .cpp file :
SEXP foo( SEXP x1, SEXP x2 ){
...
}
There is not much more to know about the R API to be using Rcp...
npm install vs. update - what's the difference?
...
npm install installs all modules that are listed on package.json file and their dependencies.
npm update updates all packages in the node_modules directory and their dependencies.
npm install express installs only the express module and its dependencies.
npm update express updates expre...
Disable ALL CAPS menu items in Visual Studio 2013
...
I have been using the following reg files to enable/disable the lowercasing in Visual Studio 2013:
http://erwinmayer.com/dl/VS2013_ALLCAPS_Toggle.zip
Just double click on VS2013_ALLCAPS_Disable.reg inside the archive to disable all caps menu titles, and VS201...
Git push/clone to new server
...rk availability. Since a Git repository is really just a directory full of files, you can "clone" a repository by making a copy of the .git directory in whatever way suits you best.
The most efficient way is to use an external repository somewhere (use GitHub or set up Gitosis), and then git push.
...
windows service vs scheduled task
... Window Services for repititive maintenance tasks and applications such as file copying/synchronisations, bulk email sending, deletion or archiving of files, data correction (when other workarounds are not available).
For one project I have been involved in the development of 8 or 9 Windows Service...
How to include layout inside layout?
... embed another
layout inside the current layout.
Here is my header.xml file which i can reuse using include tag
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_he...
Can enums be subclassed to add new elements?
...iving an enum from an interface is used by the Java 1.7 API, e.g. java.nio.file.Files.write() takes an array of OpenOption as the last argument. OpenOption is an interface, but when we call this function we usually pass a StandardOpenOption enum constant, which is derived from OpenOption. This has t...
LINQ .Any VS .Exists - What's the difference?
... so to eliminate any influence from generating test data I wrote it all to file and now read it from there.
private static void Test()
{
var list1 = File.ReadAllLines("test.txt").Take(500000).ToList();
var forceListEval = list1.SingleOrDefault(o => o == "0123456789012");
...
How do I start a program with arguments when debugging?
... }
This allows me to use the same syntax in my sample batch files, and in debugging with Visual Studio. No account information or URLs saved in GIT.
Example Use in Batch
share
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Find a commit on GitHub given the commit hash
... in mongo, and found that there's a similar URL pattern to view a specific file, given the hash of a commit: github.com/$owner/$project/blob/$hash/path/to/file.ext - e.g. github.com/mongodb/mongo/blob/…
– RubyTuesdayDONO
Mar 5 '13 at 16:56
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