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Is there an R function for finding the index of an element in a vector?
... 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.
For multiple matching, %in% is the way...
A good example for boost::algorithm::join
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edited Jul 12 '17 at 18:45
Rakete1111
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Is there a javadoc tag for documenting generic type parameters?
...Timo Willemsen
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How to show SQL queries run in the Rails console?
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answered May 29 '10 at 17:44
John TopleyJohn Topley
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WPF: How to display an image at its original size?
... regarding DPI settings, Paja. Several of my toolbar icons had been set to 72 DPI, which causes them to appear larger even if the pixel dimensions are 16x16.
– dthrasher
Mar 14 '11 at 0:21
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How to check for Is not Null And Is not Empty string in SQL server?
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What is default session timeout in ASP.NET?
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107
It is 20 Minutes according to MSDN
From MSDN:
Optional TimeSpan attribute.
Specifies the number...
Why would a post-build step (xcopy) occasionally exit with code 2 in a TeamCity build?
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Even if you provide the /Y switch with xcopy, you'll still get an error when xcopy doesn't know ...
Python xml ElementTree from a string source?
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edited Mar 25 '16 at 17:16
Artem Klevtsov
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How would one call std::forward on all arguments in a variadic function?
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edited May 12 '10 at 17:36
answered May 12 '10 at 17:31
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