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How to get everything after last slash in a URL?
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Casimir Crystal
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answered Aug 31 '11 at 7:28
Luke404Luke404
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Opposite of %in%: exclude rows with values specified in a vector
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You can use the ! operator to basically make any TRUE FALSE and every FALSE TRUE. so:
D2 = subset(D1, !(V1 %in% c('B','N','T')))
EDIT:
You can also make an operator yourself:
'%!in%' <- function(x,y)!('%in%'(x,y))
c(1,3,11)%!in%1:10
[1] FALSE FALSE TRUE
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Is there any way to ignore INSTALL_FAILED_VERSION_DOWNGRADE on application install with the Android
It seems like the most recent Android 4.2 has introduced this error condition on installation when one attempts to install an APK with a lower version. In prior versions of Android, one would be able to install older APK's simply via adb install -r <link to APK> . For debugging purposes, I f...
Is there a command line utility for rendering GitHub flavored Markdown?
I'm wondering if there is a command line utility for taking a GitHub flavored Markdown file and rendering it to HTML.
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What are bitwise operators?
...y delved into it in either an academic or professional setting, so stuff like these bitwise operators really escapes me.
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How to convert date to timestamp in PHP?
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This method works on both Windows and Unix and is time-zone aware, which is probably what you want if you work with dates.
If you don't care about timezone, or want to use the time zone your server uses:
$d = DateTime::createFromFormat('d...
How do I add a class to a given element?
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laurent
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answered Feb 3 '09 at 13:58
IshmaelIshmael
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Does “\d” in regex mean a digit?
...d 3 but not 2 . I was wondering if \d matches a digit satisfying what kind of requirement? I am talking about Python style regex.
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What is the difference between a “function” and a “procedure”?
Generally speaking, we all hear about the functions or procedures in programming languages. However, I just found out that I use these terms almost interchangeably (which is probably very wrong).
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How can the Euclidean distance be calculated with NumPy?
...ou can find the theory behind this in Introduction to Data Mining
This works because Euclidean distance is l2 norm and the default value of ord parameter in numpy.linalg.norm is 2.
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