R: Generate Random Strings

stri_rand_strings {stringi} | R Documentation

## 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 strange output 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.

### See Also

Other random: `stri_rand_lipsum`, `stri_rand_shuffle`

### Examples

    stri_rand_strings(5, 10) # 5 strings of length 10
    stri_rand_strings(5, sample(1:10, 5, replace=TRUE)) # 5 strings of random lengths
    stri_rand_strings(10, 5, "[\\p{script=latin}&\\p{Ll}]") # small letters from the Latin script

    # 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]')
    ))

[Package stringi version 1.2.4 Index]