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Is there an R function for finding the index of an element in a vector?
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The function match works on vectors :
x <- sample(1:10)
x
# [1] 4 5 9 3 8 1 6 10 7 2
match(c(4,8),x)
# [1] 1 5
match only returns the first encounter of a match, as you requested. It returns the position in the second argument of the values in the first argument.
Fo...
jQuery ID starts with
...Mark Kahn
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How to kill zombie process
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edited Mar 11 at 13:00
answered Jun 5 '13 at 16:17
Wi...
Where is nodejs log file?
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edited May 30 '12 at 12:54
answered May 30 '12 at 11:21
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dealloc in Swift
...brary/content/releasenotes/Foundation/RN-FoundationOlderNotes/index.html#X10_11Notes
NSNotificationCenter
In OS X 10.11 and iOS 9.0 NSNotificationCenter and NSDistributedNotificationCenter will no longer send notifications to registered observers that may be deallocated. If the observer is able to ...
Android accelerometer accuracy (Inertial navigation)
...useless in practice.
Here is an explanation why (Google Tech Talk) at 23:20. I highly recommend this video.
It is not the accelerometer noise that causes the problem but the gyro white noise, see subsection 6.2.3 Propagation of Errors. (By the way, you will need the gyroscopes too.)
As for indoor...
Difference between framework and static library in xcode4, and how to call them
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The biggest advantage a framework has over static libraries is that they act as a neat way of pa...
HTTP 401 - what's an appropriate WWW-Authenticate header value?
... gut feel if you are using forms based authentication is to stay with the 200 + relogin page but add a custom header that the browser will ignore but your AJAX can identify.
For a really good User + AJAX experience, get the script to hang on to the AJAX request that found the session expired, fire ...
return statement vs exit() in main()
...g exit over return.
http://groups.google.com/group/gnu.gcc.help/msg/8348c50030cfd15a
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'Best' practice for restful POST response
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edited Aug 20 '15 at 11:25
answered Oct 5 '13 at 19:27
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