arrays in Ruby, how to handle this situation? -

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let's have following array: 

arr = ["", "2121", "8", "mystring"]

i want return false in case array contains non-digit symbols.

if empty strings allowed:

def contains_non_digit(array)     !array.select {|s| s =~ /^.*[^0-9].*$/}.empty? end

explanation: filters array strings match regular expression. regex true string contains @ least 1 non-digit character. if resulting array empty, array contains no non-digit strings. finally, need negate result, because want know array does contain non-digit strings.


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