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vagrant up failed, /dev/vboxnetctl: no such file or directory
...untu 16.04, I followed steps 1-3 here and it solved my issues (virtual box now up and running). Thanks!
– NineToeNerd
Jan 14 '18 at 4:56
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Replace specific characters within strings
..., "e18947")) )
R> group
group
1 12357e
2 12575e
3 197e18
4 e18947
Now use gsub() with the simplest possible replacement pattern: empty string:
R> group$groupNoE <- gsub("e", "", group$group)
R> group
group groupNoE
1 12357e 12357
2 12575e 12575
3 197e18 19718
4 e18947 ...
Remove duplicated rows using dplyr
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Note: dplyr now contains the distinct function for this purpose.
Original answer below:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One appr...
Using the Underscore module with Node.js
..., it overwrites the _ object with the result of my function call. Anyone know what's going on? For example, here is a session from the node.js REPL:
...
Assigning default value while creating migration file
...the generated file to add a column to a model Tweet with datatype integer. Now I want to add default value to the added column while generating the migration file. Is that possible? I googled it but couldn't find. Guys need help.
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Determine if running on a rooted device
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Just wanted to let you know, the Fox Digital Copy (Beta) app uses your code nearly verbatim, including the Root and ExecShell classes, as well as the checkRootMethod1/2/3 methods. Found it highly amusing.
– Matt Joseph
...
How do I type using my keyboard on the iphone simulator?
...eyboard
Command-K Toggle (Show/Hide) Software Keyboard
And, you know, I really suffered for last 2 months, until found it, and it is very convenient now))
share
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improve this answer
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Cannot get to $rootScope
...
Thanks, it makes perfect sense, but how did you know that? Was it in the docs?
– Malvolio
May 7 '12 at 21:55
143
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Is it possible to create static classes in PHP (like in C#)?
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I know this is pretty old, but now you could use magic __callStatic so when you call any static method or anything, it will first call __callStatic, there you could see if it was initialized and then do self::$method or whatever...
Java Hashmap: How to get key from value?
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Apache Collections now supports generics commons.apache.org/proper/commons-collections/javadocs/…
– kervin
May 31 '15 at 16:28
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