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  1. s <- c("????", "Cat", "Blue_", "????","D-1")
  2.  
  3. s[!grepl('^[A-Za-z0-9_-]+$', s)] <- 'ABC'
  4.  
  5. s
Success #stdin #stdout 0.16s 175424KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "ABC"   "Cat"   "Blue_" "ABC"   "D-1"
https://ideone.com/EzH8J4
language:
R (R 3.5.2)
created:
6 years ago
visibility:
public

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