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  1. library(dplyr)
  2. library(stringr)
  3.  
  4. ! str_detect("THE QUEEN’S HAND", "[[:lower:]]")
  5. ! str_detect("##45$&%&3#", "[[:lower:]]")
  6. ! str_detect("THE QUEEN’s HAND\n", "[[:lower:]]")
  7. ! str_detect("aa", "[[:lower:]]")
Success #stdin #stdout #stderr 0.5s 51640KB
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stdin
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Standard input is empty
stdout
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[1] TRUE
[1] TRUE
[1] FALSE
[1] FALSE
stderr
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Attaching package: ‘dplyr’

The following objects are masked from ‘package:stats’:

    filter, lag

The following objects are masked from ‘package:base’:

    intersect, setdiff, setequal, union
https://ideone.com/cgcylK
language:
R (R 3.5.2)
created:
6 years ago
visibility:
public

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