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Extract elements of list at odd positions
...l. The result will contain the elements placed on the following positions (0-based, so first element is at position 0, second at 1 etc.):
1, 3, 5
so the result (actual numbers) will be:
2, 4, 6
Explanation
The [1::2] at the end is just a notation for list slicing. Usually it is in the followi...
Extract a regular expression match
...nd adds a few that are missing:
library(stringr)
str_locate("aaa12xxx", "[0-9]+")
# start end
# [1,] 4 5
str_extract("aaa12xxx", "[0-9]+")
# [1] "12"
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PHP shell_exec() vs exec()
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Daniel A. WhiteDaniel A. White
170k4242 gold badges334334 silver badges403403 bronze badges
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Extracting Nupkg files using command line
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106
You can also use the NuGet command line, by specifying a local host as part of an install. For ...
How to install Java SDK on CentOS?
...n you read this, the lastest available version may be different.
java-1.7.0-openjdk.x86_64
The above package alone will only install JRE. To also install javac and JDK, the following command will do the trick:
$ yum install java-1.7.0-openjdk*
These packages will be installing (as well as thei...
How can I get the Typescript compiler to output the compiled js to a different directory?
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answered Jun 27 '14 at 14:40
Bruno GriederBruno Grieder
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How do I view the list of functions a Linux shared library is exporting?
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320
What you need is nm and its -D option:
$ nm -D /usr/lib/libopenal.so.1
.
.
.
00012ea0 T alcSetT...
Controlling maven final name of jar artifact
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303
You set the finalName property in the plugin configuration section:
<plugin>
<gro...
find vs find_by vs where
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104
Use whichever one you feel suits your needs best.
The find method is usually used to retrieve ...
Generate random int value from 3 to 6
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