stri_rand_strings: Generate Random Strings¶

Description¶

Generates (pseudo)random strings of desired lengths.

Usage¶

stri_rand_strings(n, length, pattern = "[A-Za-z0-9]")

Arguments¶


`n`	single integer, number of observations
`length`	integer vector, desired string lengths
`pattern`	character vector specifying character classes to draw elements from, see stringi-search-charclass

Details¶

Vectorized over length and pattern. If length of length or pattern is greater than n, then redundant elements are ignored. Otherwise, these vectors are recycled if necessary.

This operation may result in non-Unicode-normalized strings and may give peculiar outputs for bidirectional strings.

Sampling of code points from the set specified by pattern is always done with replacement and each code point appears with equal probability.

Value¶

Returns a character vector.

Author(s)¶

Marek Gagolewski and other contributors

Examples¶

stri_rand_strings(5, 10) # 5 strings of length 10
## [1] "HmPsw2WtYS" "xSgZ6tF2Kx" "tgdzehXaH9" "xtgn1TlDJE" "8PPM98ESGr"
stri_rand_strings(5, sample(1:10, 5, replace=TRUE)) # 5 strings of random lengths
## [1] "tNf5N"     "HoRoonR"   "kdi0T"     "DNbL6F"    "fPm6QztsA"
stri_rand_strings(10, 5, '[\\p{script=latin}&\\p{Ll}]') # small letters from the Latin script
##  [1] "ŏặɹẽɧ"   "ưꝵęᵬᶏ"   "ṯɰᵽ𝼁ᵹ"   "ꭔﬄṻʬũ"   "ｎəòｗⱹ" "šḡ𝼁ṙʨ"   "ắɧɝǧʌ"  
##  [8] "𝼙ųĕšữ"   "ẋꭕổꜳᶖ"   "ềꞹꝸ𝼕ᴒ"
# generate n random passwords of length in [8, 14]
# consisting of at least one digit, small and big ASCII letter:
n <- 10
stri_rand_shuffle(stri_paste(
   stri_rand_strings(n, 1, '[0-9]'),
   stri_rand_strings(n, 1, '[a-z]'),
   stri_rand_strings(n, 1, '[A-Z]'),
   stri_rand_strings(n, sample(5:11, 5, replace=TRUE), '[a-zA-Z0-9]')
))
##  [1] "3hGsaJNqZTaGw"  "wJGmtzJcuPS4"   "k0MsQHEx9bOZeV" "FTAJ1Dgf2A"    
##  [5] "8LxJPujoHhc"    "uNkX3Ygc2QThO"  "O9oTfpCn3X2G"   "aidxJ0jyFFDfOA"
##  [9] "TKGrmAlP2W"     "sffGLWZ7vKw"