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samueleaton/rand_str.cr

Created December 14, 2018 17:27
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Because sometime your need a big alphanumeric string in Crystal
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rand_str.cr
def rand_str(length = 16, supplemental_chars = "")
res = [] of Char
chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" + supplemental_chars
length.times do { |i| res << chars[rand(chars.size)] }
res.join()
end
rand_str 32
#=> xkURIpYnqbRVj893pr23LhhxeukFTu5f
# more characters can be used using the 2nd arg
rand_str 48, "!@#$%^&*"
#=> !JzRCOtU%Xr38c*Un$bS3VZygDIfo4lFK#F@^TZAtd8I6QSG
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