CODEWITHSUNDEEP
regexr
user1436187
user1436187

Reputation: 3376

Replace wild characters with `\` + wild charcter in R with gsub

I want to replace the wild characters with the same character but with \ prefix.

For example:

gsub("#","\\#","234254#3")

Expected result: 234254\#3 but we get:

  "234254#3"



   gsub(" ","\\ ","234254 3")

Expected result: 234254\ 3

but we get:

"234254 3"

But this commands does not work.

Upvotes: 2

Views: 86

Answers (2)

akrun
akrun

Reputation: 887213

You can use

 res <- gsub("#","\\\\#","234254#3")
 cat(res, '\n')
 #234254\#3 
 nchar(res)
 #[1] 9

To make it more clear

 nchar('\\')
 #[1] 1

For the second one also, it is the same \\\\

 gsub(" ","\\\\ ","234254 3")

Upvotes: 3

anubhava
anubhava

Reputation: 785276

You can use fixed=TRUE as 4th parameter of gsub and use \\ in replacement:

res <- gsub("#", "\\#", "234254#3", fixed=TRUE)
cat(res)

Output:

234254\#3

Upvotes: 5

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