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Split delimited strings in a column and insert as new rows [duplicate]
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Here is another way of doing it..
df <- read.table(textConnection("1|a,b,c\n2|a,c\n3|b,d\n4|e,f"), header = F, sep = "|", stringsAsFactors = F)
df
## V1 V2
## 1 1 a,b,c
## 2 2 a,c
## 3 3 b,d
## 4 4 e,f
s <- strsplit(df$V2, split = ",")
data.frame(V1 = rep(df$V1, sapply(s,...
How to repair a serialized string which has been corrupted by an incorrect byte count length?
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15 Answers
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Benefits of header-only libraries
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edited Nov 28 '12 at 19:42
answered Oct 1 '12 at 10:18
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CSRF Token necessary when using Stateless(= Sessionless) Authentication?
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159
I found some information about CSRF + using no cookies for authentication:
https://auth0.com...
Double negation (!!) in javascript - what is the purpose? [duplicate]
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188
It casts to boolean. The first ! negates it once, converting values like so:
undefined to tr...
could not resolve host github.com error while cloning remote repository in git
...server = proxy.my.company:8080 <= use your company proxy:port
listen = 127.0.0.1
port = 3128
use HTTP(S) proxy variable without your credentials! (the px proxy will reuse the ones from the current Widows session, either through Microsoft SSPI or Microsoft Kerberos)
That will give you:
set HTT...
npm - how to show the latest version of a package
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answered Aug 14 '12 at 9:33
CD..CD..
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Why Func instead of Predicate?
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171
While Predicate has been introduced at the same time that List<T> and Array<T>, in...
Where to use EJB 3.1 and CDI?
... making a Java EE based product in which I'm using GlassFish 3 and EJB 3.1.
2 Answers
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